当应用程序处于后台时，如何显示来电?安卓系统

Question

这就是我在后台试图做的，但什么也没发生。我正在使用推送通知(Firebase消息服务(来运行此代码。

phoneAccountHandle = PhoneAccountHandle(
ComponentName(
packageName,
DoctorConnectionService::class.java.name
), phoneAccountHandleId
)
val builder = PhoneAccount.builder(phoneAccountHandle, "My account")
builder.setCapabilities(PhoneAccount.CAPABILITY_CALL_PROVIDER or PhoneAccount.CAPABILITY_CONNECTION_MANAGER)
val phoneAccount = builder.build()
val test = telecomManager
telecomManager?.registerPhoneAccount(phoneAccount)
telecomManager?.addNewIncomingCall(phoneAccountHandle, Bundle())

Answer 1

您可以尝试BroadcastReceiver。这是我的BroadcastReceiver类&主要活动。在这里，当应用程序在后台时，我只是吐司一条消息(来电(：

主要活动：

public class MainActivity extends AppCompatActivity {
BroadcastReceiver callReceiver;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_home);
checkPermission();
callReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
/*Do Whatever You Want When You Reciveing a Call And App is Open*/
}
};
IntentFilter callFilter = new IntentFilter("android.intent.action.PHONE_STATE");
registerReceiver(callReceiver, callFilter);
}
@Override
protected void onDestroy() {
super.onDestroy();
unregisterReceiver(callReceiver);
}
private void checkPermission() {
if (ContextCompat.checkSelfPermission(this, Manifest.permission.READ_PHONE_STATE) != PackageManager.PERMISSION_GRANTED) {
ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.READ_PHONE_STATE}, 100);
}
}
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
if (requestCode == 100) {
}
}
}

这是我的BroadcastReceiver类：

public class IncomingCallReciver extends BroadcastReceiver{
@Override
public void onReceive(Context context, Intent intent) {
Toast.makeText(context, ".:Incoming Call:.", Toast.LENGTH_SHORT).show();
/*Do Whatever You Want When You Reciveing a Call And App is In Background*/
}
}

然后在Manifest中添加READ_PHONE_STATE权限，并在Manifests中添加BroadcastReceiver的类，内部应用程序标记：

<receiver android:name=".IncomingCallReciver">
<intent-filter>
<action android:name="android.intent.action.PHONE_STATE" />
</intent-filter>
</receiver>