android - 时区示例在模拟器中不起作用

Question

<receiver android:name=".ExampleBroadCastReceiver" 
    android:enabled="true"> 
    <intent-filter> 
        <action android:name="android.intent.action.ACTION_TIMEZONE_CHANGED"/> 
    </intent-filter> 
</receiver> 

package com.broadcastreceiver;

import java.util.ArrayList;
import android.appwidget.AppWidgetManager;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.util.Log;

public class ExampleBroadCastReceiver extends BroadcastReceiver { 
    @Override
    public void onReceive(final Context context, final Intent intent) {
        // TODO Auto-generated method stub

        Log.d("ExmampleBroadcastReceiver", "intent=" + intent); 
        Intent intent1 = new Intent(context,Login.class); 
        context.startActivity(intent1); 
    } 
} 

我运行上面的代码更改设置中的时区而不调用其他 Activity 。谁能告诉我问题出在哪里？

Answer 1

我遇到了同样的问题，这个线程帮助我使 TimeZone 更新正常工作，但是我仍然没有收到日期/时间更改的通知。我终于发现您在 list 文件中指定的内容与您的广播接收器在过滤 Intent 时使用的内容有所不同。虽然它是记录在 Android Intent 引用中，但很容易被忽视!

在您的 AndroidManifest.xml 文件中，使用以下内容:

  <receiver android:name=".MyReceiver">
    <intent-filter>
      <!-- NOTE: action.TIME_SET maps to an Intent.TIME_CHANGED broadcast message -->
      <action android:name="android.intent.action.TIME_SET" /> 
      <action android:name="android.intent.action.TIMEZONE_CHANGED" />
      <action android:name="android.intent.action.BOOT_COMPLETED" />
    </intent-filter>
  </receiver>

在你的接收器类中:

public class MyReceiver extends BroadcastReceiver {
  private static final String TAG = "MyReceiver";
  private static boolean DEBUG = true;

  @Override
  public void onReceive(Context context, Intent intent) {
    final String PROC = "onReceive";

    if (intent.getAction().equals(Intent.ACTION_BOOT_COMPLETED)) {
        if (DEBUG) { Log.v(TAG, PROC + ": ACTION_BOOT_COMPLETED received"); }
    }
    // NOTE: this was triggered by action.TIME_SET in the manifest file!
    else if (intent.getAction().equals(Intent.ACTION_TIME_CHANGED)) {
      if (DEBUG) { Log.v(TAG, PROC + ": ACTION_TIME_CHANGED received"); }
    }
    else if (intent.getAction().equals(Intent.ACTION_TIMEZONE_CHANGED)) {
      if (DEBUG) { Log.v(TAG, PROC + ": ACTION_TIMEZONE_CHANGED received"); }
    }
  }

}