Android - 如何在一定时间内限制通话？

Question

我正在创建拨打电话的 android 应用程序。我只想在一定时间后挂断或取消通话，就像我想拨打一个在 60 秒后自动挂断的电话。这在android中可能吗？这是我的代码：

public void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    // add PhoneStateListener
    PhoneCallListener phoneListener = new PhoneCallListener();
    TelephonyManager telephonyManager = (TelephonyManager) this.getSystemService(Context.TELEPHONY_SERVICE);
    telephonyManager.listen(phoneListener, PhoneStateListener.LISTEN_CALL_STATE);

    Intent callIntent = new Intent(Intent.ACTION_CALL);

    callIntent.setData(Uri.parse("tel:*03362111904"));

    startActivity(callIntent);
}

private class PhoneCallListener extends PhoneStateListener {

    private boolean isPhoneCalling = false;

    String LOG_TAG = "LOGGING 123";

    @Override
    public void onCallStateChanged(int state, String incomingNumber) {

        if (TelephonyManager.CALL_STATE_RINGING == state) {
            // phone ringing
            Log.i(LOG_TAG, "RINGING, number: " + incomingNumber);
        }

        if (TelephonyManager.CALL_STATE_OFFHOOK == state) {
            // active
            Log.i(LOG_TAG, "OFFHOOK");

            isPhoneCalling = true;
        }

        if (TelephonyManager.CALL_STATE_IDLE == state) {
            // run when class initial and phone call ended, need detect flag
            // from CALL_STATE_OFFHOOK
            Log.i(LOG_TAG, "IDLE");

            if (isPhoneCalling) {

                Log.i(LOG_TAG, "restart app");

                // restart app
                Intent i = getBaseContext().getPackageManager()
                        .getLaunchIntentForPackage(
                                getBaseContext().getPackageName());
                i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
                startActivity(i);

                isPhoneCalling = false;
            }

        }
    }
}

}

Answer 1

已经提到在BroadcastReceiver 中捕获拨出电话，如果您想在拨号前结束通话，这绝对是最好的方法。

到目前为止，我遇到的唯一挂断方法是通过 Java Reflection 挂断。由于它不是公共 API 的一部分，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。

Prasanta Paul's blog demonstrates是怎么实现的，我总结如下。

获取ITelephony对象：

TelephonyManager tm = (TelephonyManager) context
        .getSystemService(Context.TELEPHONY_SERVICE);
try {
    // Java reflection to gain access to TelephonyManager's
    // ITelephony getter
    Log.v(TAG, "Get getTeleService...");
    Class c = Class.forName(tm.getClass().getName());
    Method m = c.getDeclaredMethod("getITelephony");
    m.setAccessible(true);
    com.android.internal.telephony.ITelephony telephonyService =
            (ITelephony) m.invoke(tm);
} catch (Exception e) {
    e.printStackTrace();
    Log.e(TAG,
            "FATAL ERROR: could not connect to telephony subsystem");
    Log.e(TAG, "Exception object: " + e);
}

结束通话：

telephonyService.endCall();