[英]Android android.R.id.list ListView Fragment Exception
我有一個Android應用程序,當我添加ListFragment
時,它總是崩潰。 我不斷出錯,並且閱讀了其他網站並顯示了相同的錯誤消息。 我還沒有找到對我有用的任何東西。 例外是:
Unable to start Activity Component {com.alarm/com.alarm.activity.AlarmListActivity} java.lang.RuntimeException: Content has view with android.R.id.list that is not a ListView class.
不過這很奇怪,因為我沒有ID為“ list”的ListView。 這是我的片段的定義方式。
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<ListView
android:id="@+id/alarm_list"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
</ListView>
</LinearLayout>
這是我的片段和活動類。
分段:
package com.alarm.fragments;
import android.app.ListFragment;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import com.alarm.R;
public class AlarmListFragment extends ListFragment {
@Override
public void onActivityCreated(Bundle savedInstanceState) {
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.frag_alarm_list, null);
return v;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
@Override
public void onResume() {
super.onResume();
Log.e("onREUME", "resuming list activity");
}
}
活動:
package com.alarm.activity;
import android.app.Activity;
import android.app.FragmentManager;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import com.alarm.R;
import com.alarm.fragments.AlarmListFragment;
public class AlarmListActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
FragmentManager fm = getFragmentManager();
if (fm.findFragmentById(android.R.id.content) == null) {
fm.beginTransaction().add(android.R.id.content, new AlarmListFragment()).commit();
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.alarm_list_menu, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.action_add_alarm:
Intent addAlarm = new Intent(this, AlarmCreateActivity.class);
startActivity(addAlarm);
return true;
case R.id.settings:
Intent settings = new Intent(this, SettingsActivity.class);
startActivity(settings);
return true;
default:
return super.onOptionsItemSelected(item);
}
}
}
任何幫助或解釋為什么會發生這種情況將不勝感激!
您必須將android:id="@id/android:list"
用於ListView
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