BroadcastReceiver Intent.ACTION_PACKAGE_ADDED/REMOVED Android Oreo [英] BroadcastReceiver Intent.ACTION_PACKAGE_ADDED/REMOVED Android Oreo

问题描述

这是我的广播接收器类，主要是其实现.

This is my broadcast receiver class and the implementation of it in main.

问题在于onReceive方法永远不会被调用.

Problem is that onReceive method never gets called.

class MyBroadcastReceiver : BroadcastReceiver() {
  override fun onReceive(p0: Context?, p1: Intent?) {
     Toast.makeText(p0, "It works", Toast.LENGTH_LONG).show()
  }
}

class MainActivity : AppCompatActivity() {
     ......

     private var broadcastReceiver: MyBroadcastReceiver = MyBroadcastReceiver()

     override fun onCreate(savedInstanceState: Bundle?) {
            ......

            registerReceiver(broadcastReceiver, IntentFilter().apply {
                addAction(Intent.ACTION_PACKAGE_ADDED)
                addAction(Intent.ACTION_PACKAGE_REMOVED)
            })
     }

     override fun onDestroy() {
            super.onDestroy()
            unregisterReceiver(broadcastReceiver)
     }
 }

请帮助.预先感谢.

推荐答案

通常BroadcastReceiver需要设置许多步骤.

Usually the BroadcastReceiver needs a number of steps to be set up.

首先您没有将清单传递给清单吗?

First of all did yout pass to the manifest the receiver?

<receiver android:name=".MyBroadcastReceiver"  android:exported="true">
    <intent-filter>
        <action android:name="android.intent.action.BOOT_COMPLETED"/>
        <action android:name="android.intent.action.INPUT_METHOD_CHANGED" />
    </intent-filter>
</receiver>

编辑 :请参阅此

Edit: Please see this post, where is suggested ACTION_PACKAGE_FULLY_REMOVED or JobScheduler

还尝试在模拟器上重新安装应用程序

try also to reinstall the app on the emulator

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