我的代码出现错误，除非我将代码添加到我的 R.Java，否则我无法运行我的项目，但我无法将代码添加到 R.Java，它会自动将其恢复为生成的版本。
VewTask.java
package com.example.androidhive;
import java.util.ArrayList;
import java.util.List;
import android.os.Bundle;
import android.app.Activity;
import android.content.Context;
import android.database.sqlite.SQLiteDatabase;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.CheckBox;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
public class ViewTask extends Activity {
protected TaskerDbHelper db;
List<Task> list;
MyAdapter adapt;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_view_task);
db = new TaskerDbHelper(this);
list = db.getAllTasks();
adapt = new MyAdapter(this, R.layout.list_inner_view, list);
ListView listTask = (ListView) findViewById(R.id.listView1);
listTask.setAdapter(adapt);
}
public void addTaskNow(View v) {
EditText t = (EditText) findViewById(R.id.editText1);
String s = t.getText().toString();
if (s.equalsIgnoreCase("")) {
Toast.makeText(this, "enter the task description first!!",
Toast.LENGTH_LONG);
} else {
Task task = new Task(s, 0);
db.addTask(task);
Log.d("tasker", "data added");
t.setText("");
adapt.add(task);
adapt.notifyDataSetChanged();
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.activity_view_task, menu);
return true;
}
private class MyAdapter extends ArrayAdapter<Task> {
Context context;
List<Task> taskList = new ArrayList<Task>();
int layoutResourceId;
public MyAdapter(Context context, int layoutResourceId,
List<Task> objects) {
super(context, layoutResourceId, objects);
this.layoutResourceId = layoutResourceId;
this.taskList = objects;
this.context = context;
}
/**
* This method will DEFINe what the view inside the list view will
* finally look like Here we are going to code that the checkbox state
* is the status of task and check box text is the task name
*/
@Override
public View getView(int position, View convertView, ViewGroup parent) {
CheckBox chk = null;
if (convertView == null) {
LayoutInflater inflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = inflater.inflate(R.layout.list_inner_view,
parent, false);
chk = (CheckBox) convertView.findViewById(R.id.chkStatus);
convertView.setTag(chk);
chk.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
CheckBox cb = (CheckBox) v;
Task changeTask = (Task) cb.getTag();
changeTask.setStatus(cb.isChecked() == true ? 1 : 0);
db.updateTask(changeTask);
Toast.makeText(
getApplicationContext(),
"Clicked on Checkbox: " + cb.getText() + " is "
+ cb.isChecked(), Toast.LENGTH_LONG)
.show();
}
});
} else {
chk = (CheckBox) convertView.getTag();
}
Task current = taskList.get(position);
chk.setText(current.getTaskName());
chk.setChecked(current.getStatus() == 1 ? true : false);
chk.setTag(current);
Log.d("listener", String.valueOf(current.getId()));
return convertView;
}
}
}
我的错误在 onCreateOptionsMenu() 中：
getMenuInflater().inflate(R.menu.activity_view_task, menu);
并在 getView()
chk = (CheckBox) convertView.findViewById(R.id.chkStatus);
activity_view_task.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".ViewTask" >
<EditText
android:id="@+id/editText1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:ems="10" >
<requestFocus />
</EditText>
<Button
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_alignParentTop="true"
android:layout_marginRight="14dp"
android:text="@string/button"
android:onClick="addTaskNow"/>
<ListView
android:id="@+id/listView1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="@+id/button1" >
</ListView>
</RelativeLayout>
这是我的另一个 xml 文件，其中包含复选框 list_inner_view.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<CheckBox
android:id="@+id/checkBox1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:focusable="false"
android:focusableInTouchMode="false"
android:text="CheckBox" />
</RelativeLayout>
菜单和 chkStatus 的特定错误消息说：“菜单无法解析或不是字段”和“chkStatus 无法解析或不是字段”