我希望阻止一些乱来电,所以我需要在 android 中以编程方式挂断一些电话。
以下 fragment 来自 How to hang up outgoing call in Android?
是不是意味着以后的安卓版本会随时屏蔽挂断电话?
这是否意味着我不能编写应用程序来挂断电话?
到目前为止,我遇到的唯一挂断方法是通过 Java 反射来挂断。由于它不是公共(public) API 的一部分,因此您应该小心使用它,而不是依赖它。对 Android 内部构成的任何更改都会有效地破坏您的应用程序。
最佳答案
首先需要在AndroidManifest.xml
<uses-permission android:name="android.permission.CALL_PHONE" />
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
然后为 android.intent.action.PHONE_STATE
(来电)和 android.intent.action.NEW_OUTGOING_CALL
设置 BroadcastReceiver
服务(拨出电话)通过将以下内容添加到 AndroidManifest.xml
AndroidManifest.xml
<receiver android:name=".PhoneStateReceiver">
<intent-filter android:priority="0">
<action android:name="android.intent.action.PHONE_STATE" />
<action android:name="android.intent.action.NEW_OUTGOING_CALL" />
</intent-filter>
</receiver>
PhoneStateReceiver.JAVA
import java.lang.reflect.Method;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.telephony.TelephonyManager;
import android.util.Log;
public class PhoneStateReceiver extends BroadcastReceiver {
public static String TAG="PhoneStateReceiver";
@Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals("android.intent.action.PHONE_STATE")) {
String state = intent.getStringExtra(TelephonyManager.EXTRA_STATE);
Log.d(TAG,"PhoneStateReceiver**Call State=" + state);
if (state.equals(TelephonyManager.EXTRA_STATE_IDLE)) {
Log.d(TAG,"PhoneStateReceiver**Idle");
} else if (state.equals(TelephonyManager.EXTRA_STATE_RINGING)) {
// Incoming call
String incomingNumber =
intent.getStringExtra(TelephonyManager.EXTRA_INCOMING_NUMBER);
Log.d(TAG,"PhoneStateReceiver**Incoming call " + incomingNumber);
if (!killCall(context)) { // Using the method defined earlier
Log.d(TAG,"PhoneStateReceiver **Unable to kill incoming call");
}
} else if (state.equals(TelephonyManager.EXTRA_STATE_OFFHOOK)) {
Log.d(TAG,"PhoneStateReceiver **Offhook");
}
} else if (intent.getAction().equals("android.intent.action.NEW_OUTGOING_CALL")) {
// Outgoing call
String outgoingNumber = intent.getStringExtra(Intent.EXTRA_PHONE_NUMBER);
Log.d(TAG,"PhoneStateReceiver **Outgoing call " + outgoingNumber);
setResultData(null); // Kills the outgoing call
} else {
Log.d(TAG,"PhoneStateReceiver **unexpected intent.action=" + intent.getAction());
}
}
public boolean killCall(Context context) {
try {
// Get the boring old TelephonyManager
TelephonyManager telephonyManager =
(TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
// Get the getITelephony() method
Class classTelephony = Class.forName(telephonyManager.getClass().getName());
Method methodGetITelephony = classTelephony.getDeclaredMethod("getITelephony");
// Ignore that the method is supposed to be private
methodGetITelephony.setAccessible(true);
// Invoke getITelephony() to get the ITelephony interface
Object telephonyInterface = methodGetITelephony.invoke(telephonyManager);
// Get the endCall method from ITelephony
Class telephonyInterfaceClass =
Class.forName(telephonyInterface.getClass().getName());
Method methodEndCall = telephonyInterfaceClass.getDeclaredMethod("endCall");
// Invoke endCall()
methodEndCall.invoke(telephonyInterface);
} catch (Exception ex) { // Many things can go wrong with reflection calls
Log.d(TAG,"PhoneStateReceiver **" + ex.toString());
return false;
}
return true;
}
}
MainActivity.JAVA
import android.Manifest;
import android.content.pm.PackageManager;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
public class MainActivity extends AppCompatActivity {
public static final int MY_PERMISSIONS_REQUEST_READ_PHONE_STATE = 101;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
if (ContextCompat.checkSelfPermission(this,
Manifest.permission.READ_PHONE_STATE)
!= PackageManager.PERMISSION_GRANTED) {
// Should we show an explanation?
if (ActivityCompat.shouldShowRequestPermissionRationale(this,
Manifest.permission.READ_PHONE_STATE)) {
// Show an explanation to the user *asynchronously* -- don't block
// this thread waiting for the user's response! After the user
// sees the explanation, try again to request the permission.
} else {
// No explanation needed, we can request the permission.
ActivityCompat.requestPermissions(this,
new String[]{Manifest.permission.READ_PHONE_STATE},
MY_PERMISSIONS_REQUEST_READ_PHONE_STATE);
// MY_PERMISSIONS_REQUEST_READ_PHONE_STATE is an
// app-defined int constant. The callback method gets the
// result of the request.
}
}
}
@Override
public void onRequestPermissionsResult(int requestCode,
String permissions[], int[] grantResults) {
switch (requestCode) {
case MY_PERMISSIONS_REQUEST_READ_PHONE_STATE: {
// If request is cancelled, the result arrays are empty.
if (grantResults.length > 0
&& grantResults[0] == PackageManager.PERMISSION_GRANTED) {
// permission was granted, yay!
} else {
// permission denied, boo! Disable the
// functionality that depends on this permission.
}
return;
}
// other 'case' lines to check for other
// permissions this app might request
}
}
}
关于android - 我可以在android中以编程方式挂断电话吗?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/23097944/