单击按钮时启用和禁用广播接收器

Question

我想启用和禁用广播接收器，以便在单击按钮时完成启动。在单击按钮一次之前，接收器不应响应。我确实看到了一些类似的问题，但没有一个答案有效。请帮忙...

我尝试了这段代码，但没有工作。

PackageManager pm  = getApplicationContext().getPackageManager();
ComponentName componentName = new ComponentName("mypackage", ".receivername");
pm.setComponentEnabledSetting(componentName, PackageManager.COMPONENT_ENABLED_STATE_DISABLED, PackageManager.DONT_KILL_APP);

Answer 1

试试这个

b1.setOnClickListener(new View.OnClickListener() {
     @Override
     public void onClick(View v) {
        // TODO Auto-generated method stub
            PackageManager pm  = Re_editActivity.this.getPackageManager();
            ComponentName componentName = new ComponentName(currentActivity.this, name_of_your_receiver.class);
            pm.setComponentEnabledSetting(componentName,PackageManager.COMPONENT_ENABLED_STATE_ENABLED,
                            PackageManager.DONT_KILL_APP);
            Toast.makeText(getApplicationContext(), "activated", Toast.LENGTH_LONG).show();
            }
        });
b2.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub
            PackageManager pm  = Re_editActivity.this.getPackageManager();
            ComponentName componentName = new ComponentName(currentActivity.this, name_of_your_receiver.class);
            pm.setComponentEnabledSetting(componentName,PackageManager.COMPONENT_ENABLED_STATE_DISABLED,
                            PackageManager.DONT_KILL_APP);
            Toast.makeText(getApplicationContext(), "cancelled", Toast.LENGTH_LONG).show();
        }
    });

此处按钮 1 用于激活广播接收器，按钮 2 用于停用它 此外，您还需要在清单文件中注册广播接收器并设置

<receiver android:name="name_of_your_receiver" android:enabled="false">
        <intent-filter >                
            <action android:name="android.intent.action.BOOT_COMPLETED"/>                
        </intent-filter>
    </receiver>

Answer 2

示例代码，您可以在其中注册接收器 onCreate 方法和 onDestroy 方法，您可以取消注册它，

    private BroadcastReceiver receiver;
    @Overrride
    public void onCreate(Bundle savedInstanceState){
      // your oncreate code
      IntentFilter filter = new IntentFilter();
      filter.addAction("SOME_ACTION");
      filter.addAction("SOME_OTHER_ACTION");
      receiver = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
          //do something based on the intent's action
        }
      }
      registerReceiver(receiver, filter);
}

请记住在onDestroy方法中运行以下命令：

@Override
protected void onDestroy() {
  unregisterReceiver(receiver); //unregisterReceiver can be anywhere based on your requirement
}

Answer 3

我认为这样更容易使用：

public static void setAppComponentEnabled(@NonNull final Context context, @NonNull final Class<?> componentClass, final boolean enable) {
    final PackageManager pm = context.getPackageManager();
    final int enableFlag = enable ? PackageManager.COMPONENT_ENABLED_STATE_ENABLED : PackageManager.COMPONENT_ENABLED_STATE_DISABLED;
    pm.setComponentEnabledSetting(new ComponentName(context, componentClass), enableFlag, PackageManager.DONT_KILL_APP);
}

Answer 4

试试这个：

YourBroadcastReceiver mReceiver = new YourBroadcastReceiver();
IntentFilter filter = new IntentFilter();  //Filter for your receiver...
filter.addAction(your action goes here...);
registerReceiver(mReceiver , filter); **// Register**
unregisterReceiver(mReceiver );  **// Unregister**