Android 如何在代码中创建和注册BroadcastReceiver

我是android新手。 我正在尝试在活动中用代码注册BroadcastReceiver。这是我的代码：

MyReceiver类：

public class MyReciever extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {

    Log.i("===>", "onReceive: "+  intent.getAction());
    Toast.makeText(context, "I got it "+ intent.getIntExtra("MyValue",0), Toast.LENGTH_SHORT).show();

}
}

我的活动：

    @Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    myReciever = new MyReciever();
    intentFilter = new IntentFilter();
    intentFilter.addAction("test");
}

@Override
protected void onResume() {
    registerReceiver(myReciever, intentFilter);
    super.onResume();
}
}

舱单：

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.safarayaneh.mybroadcastreciever">

<application
    android:allowBackup="true"
    android:icon="@mipmap/ic_launcher"
    android:label="@string/app_name"
    android:roundIcon="@mipmap/ic_launcher_round"
    android:supportsRtl="true"
    android:theme="@style/AppTheme">
    <activity android:name=".MainActivity">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
</application>

</manifest>

我不明白我的问题在哪里
 在OnResume中注册广播接收器，然后在OnPause中取消注册，如下所示

    @Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    myReciever = new MyReciever();
    intentFilter = new IntentFilter();
    intentFilter.addAction("test");
}

    @Override
    protected void onPause() {
        // TODO Auto-generated method stub
        super.onPause();
        unregisterReceiver(reMyreceive);
     }
     @Override
     protected void onResume() {
        // TODO Auto-generated method stub
         super.onResume();

          registerReceiver(reMyreceive, filter);
     } 

您希望收到哪一个广播？我没有看到任何正在发送带有
“test”
操作的广播。@MikeM。你的意思是我必须使用广播意图？是的，有些东西必须广播你的接收器注册的
意图。否则，什么也不会发生。该示例正在注册系统每分钟发送的
“android.intent.action.TIME_TICK”
广播。您的自定义操作
“test”
@MikeM没有发送广播。谢谢你，终于成功了。我在评论中为你写下了步骤。谢谢你的帮助。但是解决了我的问题。
public class MainActivity extends AppCompatActivity {

    private IntentFilter intentFilter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        //this line makes the broadcastreceiver
        BroadcastReceiver mBroadcastReceiver = new BroadcastReceiver() {
            @Override
            public void onReceive(Context context, Intent intent) {
                Toast.makeText(context, "I got it "+ intent.getIntExtra("MyValue",0), Toast.LENGTH_SHORT).show();
            }
        };

        //this line register broadcastreceiver
        LocalBroadcastManager.getInstance(getContext()).registerReceiver(mBroadcastReceiver, new IntentFilter("test"));

        //this line calls the broadcastreceiver
        LocalBroadcastManager.getInstance(this).sendBroadcast(new Intent("test"));
    }    

}