當電話狀態發生變化（廣播接收器）以啟動服務時，如何啟動apk

Question

我想創建不帶ui應用程序的應用程序，但要在更改手機狀態時啟動我的應用程序，這將啟動另一個執行任務代碼但無法正常工作的服務

public void onReceive(Context context, Intent intent)
{
    Bundle bundle = intent.getExtras();
    if (bundle == null)
        return;
    String phoneNumber = null;
    // Incoming call
    String state = bundle.getString(TelephonyManager.EXTRA_STATE);
    if ((state != null)
               && (state.equalsIgnoreCase(TelephonyManager.EXTRA_STATE_RINGING)))
    {
        phoneNumber = bundle.getString(TelephonyManager.EXTRA_INCOMING_NUMBER); 

        Intent i = new Intent(context,ServiceFromBr.class);
        context.startService(i);
    }
    // Outgoing call
    else if (state == null) {       
        phoneNumber = bundle.getString(Intent.EXTRA_PHONE_NUMBER);
        Intent i = new Intent(context,ServiceFromBr.class);
        context.startService(i);
    }
}

服務代碼為：

public class ServiceFromBr extends Service 
{
    public void onCreate()
    {
        Toast t= Toast.makeText(getApplicationContext(), "in Service", Toast.LENGTH_LONG);
        t.show();
    }
}


<service android:name=".ServiceFromBr"></service>
  <receiver android:name=".BroadcastStart"
                  android:enabled="true"
                  android:exported="true">
          <intent-filter>
            <action android:name="android.intent.action.NEW_OUTGOING_CALL" />
            <action android:name="android.intent.action.PHONE_STATE" />

      </intent-filter>
    </receiver>

Answer 1

它用於廣播接收器而不是服務。

從您的啟動其他應用程序：

Intent intent = new Intent(Intent.ACTION_MAIN);
intent.addCategory(Intent.CATEGORY_LAUNCHER);
intent.setComponent(new ComponentName(packageName,mainActivity));
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(intent);

您可以像這樣獲得主要活動：

Intent mIntent = context.getPackageManager().getLaunchIntentForPackage(packageName); 
if (mIntent != null) {
   if (mIntent.getComponent() != null) {
mainActivity = mIntent.getComponent().getClassName();
  }
}

並且您必須在清單文件中添加主要活動。

您的代碼看起來像下面的代碼。

String mainActivity;
public void onReceive(Context context, Intent intent) {
    // TODO Auto-generated method stub


    if (intent.getAction().equals("android.intent.action.PHONE_STATE")) {
        String state = intent.getExtras().getString(
                TelephonyManager.EXTRA_STATE);

        if ((state != null)
                && (state.equals(TelephonyManager.EXTRA_STATE_RINGING))) {
            CallLogReceiver.phoneNo = intent.getExtras().getString(
                    "incoming_number");

            Intent mIntent = context.getPackageManager()
                    .getLaunchIntentForPackage("com.example.calculator"); //here i take example of calculator demo
            if (mIntent != null) {
                if (mIntent.getComponent() != null) {
                    mainActivity = mIntent.getComponent().getClassName();
                }
            }
            Intent launchIntent = new Intent(Intent.ACTION_MAIN);
            launchIntent.addCategory(Intent.CATEGORY_LAUNCHER);
            launchIntent.setComponent(new ComponentName(
                    "com.example.calculator", mainActivity));
            launchIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
            context.startActivity(launchIntent);
                            //further logic of your code
        }
    }
}