即使在启动后也能收听 phone 状态

Question

在我的应用程序中，我使用 Broadcast Receiver 收听 phone 状态事件（即收到呼叫、空闲等）。代码如下：

public class PhoneCallreceiver extends BroadcastReceiver {
    private boolean ringing;
    private boolean received;

    public PhoneCallreceiver() {
    }

@Override
public void onReceive(Context context, Intent intent) {
    Log.v("ranjith", "enterted receiver");
    Bundle bundle = intent.getExtras();
    String incomingnumber = bundle.getString(TelephonyManager.EXTRA_INCOMING_NUMBER);
    String state = bundle.getString(TelephonyManager.EXTRA_STATE);
    Log.v("ranjapp", state);

    if (state.equals(TelephonyManager.EXTRA_STATE_RINGING)) {
        ringing = true;
        received = false;
    } 
}

Manifest.xml

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

我的问题是我想在设备重新启动后自动启动 BroadCast Receiver。我有一个 BroadCast Receiver 来收听启动，但我不确定如何启动 PhoneCallreceiver BroadCast 接收器。

Manifest.xml

   <receiver
        android:name=".backend.BootStarter"
        android:enabled="true">
        <intent-filter>
            <action android:name="android.intent.action.BOOT_COMPLETED"/>
        </intent-filter>
    </receiver>

代码：

public class BootStarter extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) { 
        PhoneCallreceiver callreceiver = new PhoneCallreceiver();
        context.registerReceiver(callreceiver,new IntentFilter(**what to put here**));
            }
        }

Answer 1

找到我的问题的答案，接收 phonestate 的 intentfilter 操作是 android.telephony.TelephonyManager.ACTION_PHONE_STATE_CHANGED

我的更新代码如下：

public class BootStarter extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) { 
    PhoneCallreceiver callreceiver = new PhoneCallreceiver();
            context.registerReceiver(new PhoneCallreceiver(), new IntentFilter(android.telephony.TelephonyManager.ACTION_PHONE_STATE_CHANGED));
        }
    }

即使在启动后也能收听 phone 状态

Listen to phone state even after boot

android

broadcastreceiver

phone-state-listener