BroadcastReceiver取消注册错误

Question

我想在开关被禁用时取消注册broadcastreceiver。我已经试过这一点，但它不工作：

Switch BTswitch = (Switch)findViewById(R.id.BTswitch); 
    BTswitch.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() { 
     @Override 
     public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { 
       if (isChecked){ 
        registerReceiver(new mReceiver(), new IntentFilter(BluetoothAdapter.ACTION_STATE_CHANGED)); 
       } 
      else { 
        PackageManager pm = getPackageManager(); 
        ComponentName component = new ComponentName(MainActivity.this, mReceiver.class); 
        pm.setComponentEnabledSetting(component , PackageManager.COMPONENT_ENABLED_STATE_DISABLED , PackageManager.DONT_KILL_APP); 
       } 
     } 
    }); 

我也曾尝试：

unregisterReceiver(mReceiver); 

这里是我的Android清单：

<receiver 
     android:name=".mReceiver" 
     android:enabled="false"> 
     <intent-filter> 
      <action android:name="android.bluetooth.adapter.action.STATE_CHANGED"/> 
      <category android:name="android.intent.category.DEFAULT" /> 
     </intent-filter> 
    </receiver> 

这是mReceiver.java文件：

public class mReceiver extends BroadcastReceiver { 

private DevicePolicyManager mDevicePolicyManager; 
private ComponentName mComponentName; 


@Override 
public void onReceive(Context context, Intent intent) { 

如何取消注册。此代码不取消注册广告。它始终在运行。

Answer 1

其实它不断创造，只要你不切换多个实例（mReceiver实例）：

registerReceiver(new mReceiver(), new IntentFilter(BluetoothAdapter.ACTION_STATE_CHANGED)); 
       } 

如果你能负担得起，你可以修改你的代码，只需使用的mReceiver

final Register receiver = new mReceiver(); 

@Override 
     public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { 
       if (isChecked){ 
        registerReceiver(receiver , new IntentFilter(BluetoothAdapter.ACTION_STATE_CHANGED)); 
       } 

一个实例

，这样当你注销接收者时，你注销同样的mReceiver。

unregisterReceiver (receiver);