4

我需要创建一个多级列表。喜欢这张图片

多级列表

我试试这个这个这个

但不知道如何实现多级列表视图。

我尝试像这样创建自己的

main1.xml

<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:scrollbars="none"
android:background="#ffffff"
>


<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#ffffff"
android:id="@+id/add"
android:orientation="vertical"
/>


</ScrollView>

树节点数据库.java

 package com.android.treenode;

import android.content.Context;
import android.database.Cursor;
import android.database.SQLException;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.database.sqlite.SQLiteStatement;
import android.util.Log;

public class TreenodeDatabase {

private static final String DB_NAME1 = "treenode.sqlite3";
private static final int databse_version=1;
private  Context         m_contextObj       =  null ;
private  SQLiteDatabase  db   =  null ;
private SQLiteStatement insertstmt;
int totalcolms;
public TreenodeDatabase(Context ctx)
 {
         m_contextObj = ctx;
         OpenHelper  oh=new OpenHelper (m_contextObj);
         this.db=oh.getWritableDatabase();
 }


  public void CloseDB()
  {
      try
        {
            db.close();

        }
        catch(Exception ex)
        {
        }
        finally{

            db=null;
            //return nt;
        }


  } 


  public void getContinentData(){

        Cursor mCursor = null;
        String SqlQuery = null;
        int numRows;


        SqlQuery = "Select * from Continent";
        Log.d("Query ------>",SqlQuery);
        try{
            ArrayListClass.continent.clear();
        }catch (Exception e) {
            // TODO: handle exception
        }


        try
        {
            mCursor = db.rawQuery(SqlQuery, null);          
            if(mCursor != null)
            {
                numRows = mCursor.getCount();
                Log.e("1","");

                mCursor.moveToFirst();
                for (int i = 0; i < numRows; ++i) 
                {

                    ObjectClass obj = new ObjectClass();
                    obj.continent_id = mCursor.getString(0).toString().replace('$',' ').trim().toString();
                    obj.continent = mCursor.getString(1).toString().replace('$',' ').trim().toString();

                    ArrayListClass.continent.add(obj);
                    mCursor.moveToNext();

                }

            }
        } 
        catch (SQLException e) 
        {

        }
        finally{
            try{


            mCursor.close();
            mCursor=null;
            }catch (Exception e) {
                // TODO: handle exception
            }
        }

  }
  public void getCountryData(String continent_id){

        Cursor mCursor = null;
        String SqlQuery = null;
        int numRows;


        SqlQuery = "Select * from Country where Rid=" + continent_id;
        Log.d("Query ------>",SqlQuery);
        try{
            ArrayListClass.country.clear();
        }catch (Exception e) {
            // TODO: handle exception
        }


        try
        {
            mCursor = db.rawQuery(SqlQuery, null);          
            if(mCursor != null)
            {
                numRows = mCursor.getCount();
                Log.e("1","");

                mCursor.moveToFirst();
                for (int i = 0; i < numRows; ++i) 
                {

                    ObjectClass obj = new ObjectClass();
                    obj.country_id = mCursor.getString(0).toString().replace('$',' ').trim().toString();
                    obj.country = mCursor.getString(1).toString().replace('$',' ').trim().toString();
                    obj.country_ref_id =        mCursor.getString(2).toString().replace('$',' ').trim().toString();

                    ArrayListClass.country.add(obj);
                    mCursor.moveToNext();

                }

            }
        } 
        catch (SQLException e) 
        {

        }
        finally{

            try{

            }catch (Exception e) {
                // TODO: handle exception
            }

            try{


            mCursor.close();
            mCursor=null;
            }catch (Exception e) {
                // TODO: handle exception
            }
        }

  }
  public void getStateData(String country_id){

        Cursor mCursor = null;
        String SqlQuery = null;
        int numRows;


        SqlQuery = "Select * from State where Rid=" + country_id;
        Log.d("Query ------>",SqlQuery);
        try{
            ArrayListClass.state.clear();
        }catch (Exception e) {
            // TODO: handle exception
        }


        try
        {
            mCursor = db.rawQuery(SqlQuery, null);          
            if(mCursor != null)
            {
                numRows = mCursor.getCount();
                Log.e("1","");

                mCursor.moveToFirst();
                for (int i = 0; i < numRows; ++i) 
                {

                    ObjectClass obj = new ObjectClass();
                    obj.state_id = mCursor.getString(0).toString().replace('$',' ').trim().toString();
                    obj.state = mCursor.getString(1).toString().replace('$',' ').trim().toString();
                    obj.state_ref_id = mCursor.getString(2).toString().replace('$',' ').trim().toString();

                    ArrayListClass.state.add(obj);
                    mCursor.moveToNext();

                }

            }
        } 
        catch (SQLException e) 
        {

        }
        finally{
            try{


            mCursor.close();
            mCursor=null;
            }catch (Exception e) {
                // TODO: handle exception
            }
        }

  }
  public void getRegionData(String state_id){

        Cursor mCursor = null;
        String SqlQuery = null;
        int numRows;


        SqlQuery = "Select * from Region where Rid=" + state_id;
        Log.d("Query ------>",SqlQuery);
        try{
            ArrayListClass.region.clear();
        }catch (Exception e) {
            // TODO: handle exception
        }


        try
        {
            mCursor = db.rawQuery(SqlQuery, null);          
            if(mCursor != null)
            {
                numRows = mCursor.getCount();
                Log.e("1","");

                mCursor.moveToFirst();
                for (int i = 0; i < numRows; ++i) 
                {

                    ObjectClass obj = new ObjectClass();
                    obj.region_id = mCursor.getString(0).toString().replace('$',' ').trim().toString();
                    obj.region = mCursor.getString(1).toString().replace('$',' ').trim().toString();
                    obj.region_ref_id = mCursor.getString(2).toString().replace('$',' ').trim().toString();

                    ArrayListClass.region.add(obj);
                    mCursor.moveToNext();

                }

            }
        } 
        catch (SQLException e) 
        {

        }
        finally{
            try{


            mCursor.close();
            mCursor=null;
            }catch (Exception e) {
                // TODO: handle exception
            }
        }

  }
  public void getAreaData(String region_id){

        Cursor mCursor = null;
        String SqlQuery = null;
        int numRows;


        SqlQuery = "Select * from Area where Rid=" + region_id;
        Log.d("Query ------>",SqlQuery);
        try{
            ArrayListClass.area.clear();
        }catch (Exception e) {
            // TODO: handle exception
        }


        try
        {
            mCursor = db.rawQuery(SqlQuery, null);          
            if(mCursor != null)
            {
                numRows = mCursor.getCount();
                Log.e("1","");

                mCursor.moveToFirst();
                for (int i = 0; i < numRows; ++i) 
                {

                    ObjectClass obj = new ObjectClass();
                    obj.area_id = mCursor.getString(0).toString().replace('$',' ').trim().toString();
                    obj.area = mCursor.getString(1).toString().replace('$',' ').trim().toString();
                    obj.area_ref_id = mCursor.getString(2).toString().replace('$',' ').trim().toString();

                    ArrayListClass.area.add(obj);
                    mCursor.moveToNext();

                }

            }
        } 
        catch (SQLException e) 
        {

        }
        finally{
            try{


            mCursor.close();
            mCursor=null;
            }catch (Exception e) {
                // TODO: handle exception
            }
        }

  }





  public long insert(String values){
        Log.e("DbHelper : ", "Insert function called    " + values);
        this.insertstmt=this.db.compileStatement(values);
        Log.e("DbHelper :", "Executing insert query here ");
        return this.insertstmt.executeInsert();
    }



  private static class OpenHelper extends SQLiteOpenHelper {
        OpenHelper(Context context){
             super(context, DB_NAME1, null, databse_version);
        }

        @Override
        public void onCreate(SQLiteDatabase db) {
            // TODO Auto-generated method stub

            db.execSQL("CREATE TABLE "+"Continent"+"(Id INTEGER PRIMARY KEY AUTOINCREMENT,Name TXT)");
            db.execSQL("CREATE TABLE "+"Country"+"(Id INTEGER PRIMARY KEY AUTOINCREMENT,Name TXT,Rid TXT)");
            db.execSQL("CREATE TABLE "+"State"+"(Id INTEGER PRIMARY KEY AUTOINCREMENT,Name TXT,Rid TXT)");
            db.execSQL("CREATE TABLE "+"Region"+"(Id INTEGER PRIMARY KEY AUTOINCREMENT,Name TXT,Rid TXT)");
            db.execSQL("CREATE TABLE "+"Area"+"(Id INTEGER PRIMARY KEY AUTOINCREMENT,Name TXT,Rid TXT)");

        }

        @Override
        public void onUpgrade(SQLiteDatabase arg0, int arg1, int arg2) {
            // TODO Auto-generated method stub

        }
}


}

对象类.java

package com.android.treenode;


public class ObjectClass{

String continent = "";
String country = "";
String state = "";
String region = "";
String area = "";

String continent_id = "";
String country_id = "";
String state_id = "";
String region_id = "";
String area_id = "";

String country_ref_id = "";
String state_ref_id = "";
String region_ref_id = "";
String area_ref_id = "";

public static boolean [] showcountry = null;
public static boolean [] showstate = null;
public static boolean [] showregion = null;
public static boolean [] showarea = null;

//public static Bitmap b;

}

ArrayListClass.java

package com.android.treenode;

import java.util.ArrayList;

public class ArrayListClass{

public static ArrayList<ObjectClass> continent = new ArrayList<ObjectClass>();
public static ArrayList<ObjectClass> country = new ArrayList<ObjectClass>();
public static ArrayList<ObjectClass> state = new ArrayList<ObjectClass>();
public static ArrayList<ObjectClass> region = new ArrayList<ObjectClass>();
public static ArrayList<ObjectClass> area = new ArrayList<ObjectClass>();

//public static ArrayList<ObjectClass,ArrayList<ObjectCl> area1 = new ArrayList<ObjectClass,area>();

}

树节点活动.java

package com.android.treenode;

import android.app.Activity;
import android.graphics.Color;
import android.os.Bundle;
import android.util.Log;
import android.view.Gravity;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.LinearLayout;
import android.widget.LinearLayout.LayoutParams;
import android.widget.TextView;
import android.widget.Toast;

public class TreenodeActivity extends Activity {

TreenodeDatabase tnd;

LinearLayout llAdd;



int count = 0;
float size = 24f;

int items = 3;

int padding = 50;



boolean showcountry;
boolean showstate = true,showregion = true,showarea = true;

//*//** Called when the activity is first created. *//*
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main1);

    insertMethod();

    try{
        tnd = new TreenodeDatabase(this);
        tnd.getContinentData();
        tnd.CloseDB();
    }catch (Exception e) {
        // TODO: handle exception
    }



    llAdd = (LinearLayout)findViewById(R.id.add);

    //showcountry = new boolean[ArrayListClass.continent.size()];

    for(int i=0; i<ArrayListClass.continent.size(); i++){
        final int a = i;
        final LinearLayout ll = new LinearLayout(this);
        ll.setLayoutParams(new LinearLayout.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));
        ll.setGravity(Gravity.LEFT|Gravity.CENTER);
        ll.setBackgroundColor(Color.WHITE);
        ll.setOrientation(LinearLayout.VERTICAL);

        final TextView tv = new TextView(this);
        tv.setText(ArrayListClass.continent.get(i).continent + "");
        tv.setTextSize(size);
        tv.setTextColor(Color.BLACK);
        tv.setGravity(Gravity.LEFT|Gravity.CENTER);
        tv.setBackgroundColor(Color.WHITE);
        tv.setOnClickListener(new OnClickListener() {               
            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub


                try{
                    tnd = new TreenodeDatabase(getBaseContext());
                    tnd.getCountryData(ArrayListClass.continent.get(a).continent_id);
                    tnd.CloseDB();
                }catch (Exception e) {
                    // TODO: handle exception
                }

                if(showcountry){

                    if(ArrayListClass.country.size()>0){

                        for(int i = 0; i<ArrayListClass.country.size(); i++){
                            final int b = i;
                            final LinearLayout ll1 = new LinearLayout(getBaseContext());

                            if(i==0){
                                try{
                                    ll1.removeAllViews();
                                }catch (Exception e) {
                                    // TODO: handle exception
                                    e.printStackTrace();
                                }
                            }

                            ll1.setLayoutParams(new LinearLayout.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));
                            ll1.setGravity(Gravity.LEFT|Gravity.CENTER);
                            ll1.setBackgroundColor(Color.WHITE);
                            ll1.setOrientation(LinearLayout.VERTICAL);                  
                            ll1.setPadding(50, 1, 1, 1);

                            final TextView tv1 = new TextView(getBaseContext());
                            tv1.setText(ArrayListClass.country.get(i).country + "");
                            tv1.setTextSize(size);
                            tv1.setTextColor(Color.BLACK);
                            tv1.setGravity(Gravity.LEFT|Gravity.CENTER);
                            tv1.setBackgroundColor(Color.WHITE);
                            tv1.setOnClickListener(new OnClickListener() {                              
                                @Override
                                public void onClick(View v) {
                                    // TODO Auto-generated method stub

                                    try{
                                        tnd = new TreenodeDatabase(getBaseContext());
                                        tnd.getStateData(ArrayListClass.country.get(b).country_id);
                                        tnd.CloseDB();
                                    }catch (Exception e) {
                                        // TODO: handle exception
                                    }

                                    if(showstate){

                                        if(ArrayListClass.state.size()>0){

                                            for(int i = 0; i<ArrayListClass.state.size(); i++){

                                                final LinearLayout ll2 = new LinearLayout(getBaseContext());
                                                ll2.setLayoutParams(new LinearLayout.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));
                                                ll2.setGravity(Gravity.LEFT|Gravity.CENTER);
                                                ll2.setBackgroundColor(Color.WHITE);
                                                ll2.setOrientation(LinearLayout.VERTICAL);                  
                                                ll2.setPadding(50, 1, 1, 1);

                                                final TextView tv2 = new TextView(getBaseContext());
                                                tv2.setText(ArrayListClass.state.get(i).state + "");
                                                tv2.setTextSize(size);
                                                tv2.setTextColor(Color.BLACK);
                                                tv2.setGravity(Gravity.LEFT|Gravity.CENTER);
                                                tv2.setBackgroundColor(Color.WHITE);
                                                tv2.setOnClickListener(new OnClickListener() {                              
                                                    @Override
                                                    public void onClick(View v) {
                                                        // TODO Auto-generated method stub

                                                        try{
                                                            tnd = new TreenodeDatabase(getBaseContext());
                                                            tnd.getRegionData(ArrayListClass.state.get(b).state_id);
                                                            tnd.CloseDB();
                                                        }catch (Exception e) {
                                                            // TODO: handle exception
                                                        }

                                                        if(showregion){

                                                            if(ArrayListClass.region.size()>0){

                                                                for(int i = 0; i<ArrayListClass.region.size(); i++){

                                                                    final LinearLayout ll3 = new LinearLayout(getBaseContext());
                                                                    ll3.setLayoutParams(new LinearLayout.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));
                                                                    ll3.setGravity(Gravity.LEFT|Gravity.CENTER);
                                                                    ll3.setBackgroundColor(Color.WHITE);
                                                                    ll3.setOrientation(LinearLayout.VERTICAL);                  
                                                                    ll3.setPadding(50, 1, 1, 1);

                                                                    final TextView tv3 = new TextView(getBaseContext());
                                                                    tv3.setText(ArrayListClass.region.get(i).region + "");
                                                                    tv3.setTextSize(size);
                                                                    tv3.setTextColor(Color.BLACK);
                                                                    tv3.setGravity(Gravity.LEFT|Gravity.CENTER);
                                                                    tv3.setBackgroundColor(Color.WHITE);
                                                                    tv3.setOnClickListener(new OnClickListener() {                              
                                                                        @Override
                                                                        public void onClick(View v) {
                                                                            // TODO Auto-generated method stub

                                                                            try{
                                                                                tnd = new TreenodeDatabase(getBaseContext());
                                                                                tnd.getAreaData(ArrayListClass.region.get(b).region_id);
                                                                                tnd.CloseDB();
                                                                            }catch (Exception e) {
                                                                                // TODO: handle exception
                                                                            }

                                                                            if(showarea){

                                                                                if(ArrayListClass.area.size()>0){

                                                                                    for(int i = 0; i<ArrayListClass.area.size(); i++){

                                                                                        LinearLayout ll4 = new LinearLayout(getBaseContext());
                                                                                        ll4.setLayoutParams(new LinearLayout.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));
                                                                                        ll4.setGravity(Gravity.LEFT|Gravity.CENTER);
                                                                                        ll4.setBackgroundColor(Color.WHITE);
                                                                                        ll4.setOrientation(LinearLayout.VERTICAL);                  
                                                                                        ll4.setPadding(50, 1, 1, 1);

                                                                                        final TextView tv4 = new TextView(getBaseContext());
                                                                                        tv4.setText(ArrayListClass.area.get(i).area+ "");
                                                                                        tv4.setTextSize(size);
                                                                                        tv4.setTextColor(Color.BLACK);
                                                                                        tv4.setGravity(Gravity.LEFT|Gravity.CENTER);
                                                                                        tv4.setBackgroundColor(Color.WHITE);                                                                           
                                                                                        tv4.setOnClickListener(new OnClickListener() {                                                                              
                                                                                            @Override
                                                                                            public void onClick(View v) {
                                                                                                // TODO Auto-generated method stub  

                                                                                                Log.e("Log","clicked" + tv4.getText().toString());

                                                                                            Toast.makeText(getBaseContext(), tv4.getText().toString(), Toast.LENGTH_SHORT).show();

                                                                                            }
                                                                                        });

                                                                                        ll4.addView(tv4);
                                                                                        ll3.addView(ll4);

                                                                                    }

                                                                                }

                                                                                showarea = false;

                                                                            }else{
                                                                                ArrayListClass.area.clear();

                                                                                ll3.removeAllViews();

                                                                                ll3.addView(tv3);

                                                                                showarea = true;
                                                                            }

                                                                            //tv3.setClickable(false);
                                                                        }
                                                                    });

                                                                    ll3.addView(tv3);
                                                                    ll2.addView(ll3);
                                                                    //tv3.setClickable(false);
                                                                }

                                                            }

                                                            showregion = false;

                                                        }else{

                                                            ArrayListClass.region.clear();
                                                            ArrayListClass.area.clear();

                                                            ll2.removeAllViews();

                                                            ll2.addView(tv2);

                                                            showregion = true;
                                                        }

                                                        //tv2.setClickable(false);

                                                    }
                                                });

                                                ll2.addView(tv2);
                                                ll1.addView(ll2);
                                                //tv2.setClickable(false);
                                            }


                                        }

                                        showstate = false;

                                    }else{


                                        ArrayListClass.state.clear();
                                        ArrayListClass.region.clear();
                                        ArrayListClass.area.clear();

                                        ll1.removeAllViews();

                                        ll1.addView(tv1);

                                        showstate = true;

                                    }

                                    //tv1.setClickable(false);

                                }
                            });

                            ll1.addView(tv1);
                            ll.addView(ll1);
                            //tv1.setClickable(false);
                        }

                    }

                    showcountry = false;

                }else{

                    ArrayListClass.state.clear();
                    ArrayListClass.region.clear();
                    ArrayListClass.area.clear();
                    ArrayListClass.country.clear();


                    ll.removeAllViews();

                    ll.addView(tv);

                    showcountry = true;
                }

                //tv.setClickable(false);

            }
        });


        ll.addView(tv);



        llAdd.addView(ll);
    }


    Log.e("Log","Check");




}


public void insertMethod(){

    tnd = new TreenodeDatabase(this);

    StringBuilder st = new StringBuilder();
    st.append("insert into Continent(Name) values('" + "Continent1" + "');") ;
    tnd.insert(st.toString());

    tnd.CloseDB();
    tnd = new TreenodeDatabase(this);
    StringBuilder st1 = new StringBuilder();
    st1.append("insert into Continent(Name) values('" + "Continent2" + "');") ;
    tnd.insert(st1.toString());

    tnd.CloseDB();
    tnd = new TreenodeDatabase(this);
    StringBuilder st2 = new StringBuilder();

    st2.append("insert into Country(Name,Rid) values('" + "Country1A" + "','" + "1" + "');") ;
    tnd.insert(st2.toString());

    tnd.CloseDB();
    tnd = new TreenodeDatabase(this);
    StringBuilder st3 = new StringBuilder();

    st3.append("insert into Country(Name,Rid) values('" + "Country1B" + "','" + "1" + "');") ;
    tnd.insert(st3.toString());

    tnd.CloseDB();
    tnd = new TreenodeDatabase(this);
    StringBuilder st4 = new StringBuilder();

    st4.append("insert into Country(Name,Rid) values('" + "Country2A" + "','" + "2" + "');") ;
    tnd.insert(st4.toString());

    tnd.CloseDB();
    tnd = new TreenodeDatabase(this);
    StringBuilder st5 = new StringBuilder();

    st5.append("insert into Country(Name,Rid) values('" + "Country2B" + "','" + "2" + "');") ;
    tnd.insert(st5.toString());

    tnd.CloseDB();
    tnd = new TreenodeDatabase(this);
    StringBuilder st6 = new StringBuilder();

    st6.append("insert into State(Name,Rid) values('" + "State1" + "','" + "1" + "');") ;
    tnd.insert(st6.toString());

    tnd.CloseDB();
    tnd = new TreenodeDatabase(this);
    StringBuilder st7 = new StringBuilder();

    st7.append("insert into State(Name,Rid) values('" + "State2" + "','" + "1" + "');") ;
    tnd.insert(st7.toString());

    tnd.CloseDB();
    tnd = new TreenodeDatabase(this);
    StringBuilder st8 = new StringBuilder();

    st8.append("insert into Region(Name,Rid) values('" + "Region1" + "','" + "1" + "');") ;
    tnd.insert(st8.toString());

    tnd.CloseDB();
    tnd = new TreenodeDatabase(this);
    StringBuilder st9 = new StringBuilder();

    st9.append("insert into Area(Name,Rid) values('" + "Area1" + "','" + "1" + "');") ;
    tnd.insert(st9.toString());


    tnd.CloseDB();

   }  


}

请帮助我,我想我已经接近成功了..这不太好。我错过了什么。

编辑

定位输出

09-20 16:27:52.254: E/Database(5598): close() 从未在数据库'/data/data/com.android.treenode/databases/treenode.sqlite3' 09-20 16:27 上显式调用: 52.254: E/Database(5598): android.database.sqlite.DatabaseObjectNotClosedException: 应用程序没有关闭在此处打开的游标或数据库对象 09-20 16:27:52.254: E/Database(5598): at android.database .sqlite.SQLiteDatabase.(SQLiteDatabase.java:1960) 09-20 16:27:52.254: E/Database(5598): 在 android.database.sqlite.SQLiteDatabase.openDatabase(SQLiteDatabase.java:906) 09-20 16: 27:52.254: E/Database(5598): 在 android.database.sqlite.SQLiteDatabase.openOrCreateDatabase(SQLiteDatabase.java:940) 09-20 16:27:52.254: E/Database(5598): 在 android.database.sqlite .SQLiteDatabase.openOrCreateDatabase(SQLiteDatabase.java:933) 09-20 16:27:52.254: E/Database(5598): 在 android.app.ContextImpl.openOrCreateDatabase(ContextImpl.java:614) 09-20 16:27:52.254: E/Database(5598): 在 android.database.sqlite.SQLiteOpenHelper.getWritableDatabase (SQLiteOpenHelper.java:118) 09-20 16:27:52.254: E/Database(5598): at com.android.treenode.TreenodeDatabase.(TreenodeDatabase.java:23) 09-20 16:27:52.254: E/数据库(5598):在 com.android.treenode.TreenodeActivity$1$1$1.onClick(TreenodeActivity.java:810)09-20 16:27:52.254:E/数据库(5598):在 android.view.View.performClick( View.java:2533) 09-20 16:27:52.254: E/Database(5598): 在 android.view.View$PerformClick.run(View.java:9320) 09-20 16:27:52.254: E/数据库(5598):在 android.os.Handler.handleCallback(Handler.java:587)09-20 16:27:52.254:E/数据库(5598):在 android.os.Handler。dispatchMessage(Handler.java:92) 09-20 16:27:52.254: E/Database(5598): 在 android.os.Looper.loop(Looper.java:150) 09-20 16:27:52.254: E/数据库(5598):在 android.app.ActivityThread.main(ActivityThread.java:4385)09-20 16:27:52.254:E/数据库(5598):在 java.lang.reflect.Method.invokeNative(本机方法) 09-20 16:27:52.254: E/Database(5598): at java.lang.reflect.Method.invoke(Method.java:507) 09-20 16:27:52.254: E/Database(5598): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:849) 09-20 16:27:52.254: E/Database(5598): at com.android.internal.os.ZygoteInit.main(ZygoteInit .java:607) 09-20 16:27:52.254: E/Database(5598): at dalvik.system.NativeStart.main(Native Method)150) 09-20 16:27:52.254: E/Database(5598): 在 android.app.ActivityThread.main(ActivityThread.java:4385) 09-20 16:27:52.254: E/Database(5598): 在java.lang.reflect.Method.invokeNative(Native Method) 09-20 16:27:52.254: E/Database(5598): at java.lang.reflect.Method.invoke(Method.java:507) 09-20 16 :27:52.254: E/Database(5598): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:849) 09-20 16:27:52.254: E/Database(5598): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:607) 09-20 16:27:52.254: E/Database(5598): at dalvik.system.NativeStart.main(Native Method)150) 09-20 16:27:52.254: E/Database(5598): 在 android.app.ActivityThread.main(ActivityThread.java:4385) 09-20 16:27:52.254: E/Database(5598): 在java.lang.reflect.Method.invokeNative(Native Method) 09-20 16:27:52.254: E/Database(5598): at java.lang.reflect.Method.invoke(Method.java:507) 09-20 16 :27:52.254: E/Database(5598): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:849) 09-20 16:27:52.254: E/Database(5598): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:607) 09-20 16:27:52.254: E/Database(5598): at dalvik.system.NativeStart.main(Native Method)52.254: E/Database(5598): at java.lang.reflect.Method.invoke(Method.java:507) 09-20 16:27:52.254: E/Database(5598): at com.android.internal.os .ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:849) 09-20 16:27:52.254: E/Database(5598): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:607) 09- 20 16:27:52.254:E/数据库(5598):在 dalvik.system.NativeStart.main(本机方法)52.254: E/Database(5598): at java.lang.reflect.Method.invoke(Method.java:507) 09-20 16:27:52.254: E/Database(5598): at com.android.internal.os .ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:849) 09-20 16:27:52.254: E/Database(5598): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:607) 09- 20 16:27:52.254:E/数据库(5598):在 dalvik.system.NativeStart.main(本机方法)

我认为这是由于数据库没有正确关闭。(我处理这个)

但是代码有时无法正常工作,有时会显示子级别,但有时不能。有时它会显示双倍值。

4

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