当我单击应该打开另一个屏幕的按钮时，我收到错误“应用程序已意外停止。请重试”。下面是java文件以及xml文件。java文件有一个按钮的代码，点击它我得到了错误。我尝试在清单中同时使用“NewNote”和“NEWNOTE”。在这两种情况下都会出错。
package com.compilationofnotes.pragya;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
public class NotesView extends Activity {
/** Called when the activity is first created. */
Button bt;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
bt=(Button)findViewById(R.id.buttonaddnote);
bt.setOnClickListener(new View.OnClickListener() {
public void onClick(View arg0) {
// TODO Auto-generated method stub
Intent addnote = new Intent("com.compilationofnotes.pragya.NewNote");
startActivity(addnote);
}
});
}
}
package com.compilationofnotes.pragya;
import android.content.ContentValues;
import android.content.Context;
import android.database.SQLException;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
public class SqlDatabase {
public static final String KEY_ROWID = "_id";
public static final String KEY_NAME = "notes_name";
public static final String KEY_CONTENT = "notes_content";
public static final String KEY_TIME = "notes_time";
private static final String DATABASE_NAME = "Database Of Notes";
private static final String DATABASE_TABLE = "List of Notes";
private static final int DATABASE_VERSION = 1;
private DbHelper ourHelper;
private final Context ourContext;
private SQLiteDatabase ourDatabase;
public static class DbHelper extends SQLiteOpenHelper {
public DbHelper(Context context) {
super(context, DATABASE_NAME, null, DATABASE_VERSION);
// TODO Auto-generated constructor stub
}
@Override
public void onCreate(SQLiteDatabase db) {
// TODO Auto-generated method stub
db.execSQL("CREATE TABLE " + DATABASE_TABLE + " (" +
KEY_ROWID + "INTEGER PRIMARY KEY AUTOINCREMENT, " +
KEY_NAME + "TEXT NOT NULL " +
KEY_CONTENT + "TEXT NOT NULL " +
KEY_TIME + "TEXT NOT NULL"
);
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
// TODO Auto-generated method stub
db.execSQL("DROP TABLE IF EXISTS" + DATABASE_TABLE);
onCreate(db);
}
}
public SqlDatabase(Context c){
ourContext = c;
}
public SqlDatabase open() throws SQLException {
ourHelper = new DbHelper(ourContext);
ourDatabase = ourHelper.getWritableDatabase();
return this;
}
public SqlDatabase close(){
ourHelper.close();
return this;
}
public long createEntry(String notename, String notecontent, String notetime) {
// TODO Auto-generated method stub
ContentValues cv = new ContentValues();
cv.put(KEY_NAME, notename);
cv.put(KEY_CONTENT, notecontent);
cv.put(KEY_TIME, notetime);
return ourDatabase.insert(DATABASE_TABLE, null, cv);
}
}
package com.compilationofnotes.pragya;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
public class NewNote extends Activity implements OnClickListener{
EditText et;
Button btsave, btcancel;
long tp;
int counter=1;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
et=(EditText)findViewById(R.id.editt);
btsave=(Button)findViewById(R.id.buttonsave);
btcancel=(Button)findViewById(R.id.buttoncancel);
btsave.setOnClickListener(this);
btsave.setOnClickListener(this);
}
public void onClick(View arg0) {
// TODO Auto-generated method stub
switch(arg0.getId()){
case R.id.buttonsave:
try{
String notename = "Note" + counter;
String notecontent = et.getText().toString();
tp=System.currentTimeMillis();
String notetime = Long.toString(tp);
SqlDatabase entry = new SqlDatabase(NewNote.this);
entry.open();
entry.createEntry(notename, notecontent, notetime);
entry.close();
Intent i = new Intent(NewNote.this, NotesView.class);
startActivity(i);
counter++ ;
}
catch(Exception e){
e.printStackTrace();
}
break;
case R.id.buttoncancel:
Intent i = new Intent(NewNote.this, NotesView.class);
startActivity(i);
break;
}
}
}
这是我的清单。
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.compilationofnotes.pragya"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk android:minSdkVersion="8" />
<application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name" >
<activity
android:name=".NotesView"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name="com.compilationofnotes.pragya.NewNote"
android:label="@string/app_name" />
</application>
我在logcat中收到此错误：
12-16 20:37:19.099: E/AndroidRuntime(276): android.content.ActivityNotFoundException: No Activity found to handle Intent { act=com.compilationofnotes.pragya.
请请请帮助。提前致谢！