android中的后台未接来电

如何从android应用程序拨打指定号码的未接电话。我已尝试此操作，但它将启动呼叫并等待呼叫终止。我想让电话响一次，然后停下来。请帮帮我

Intent callIntent = new Intent(Intent.ACTION_CALL);
callIntent.setData(Uri.parse("tel:123456789"));
startActivity(callIntent);

从android应用程序拨打指定号码的未接电话

你可以做到，但不能保证（如果其他人立即接到电话）！计算一个戒指需要多少时间。启动

线程/计时器

，然后调用此方法以结束调用

private void mEndCall() {
        try {
        String serviceManagerName = "android.os.ServiceManager";
        String serviceManagerNativeName = "android.os.ServiceManagerNative";
        String telephonyName = "com.android.internal.telephony.ITelephony";

        Class telephonyClass;
        Class telephonyStubClass;
        Class serviceManagerClass;
        Class serviceManagerStubClass;
        Class serviceManagerNativeClass;
        Class serviceManagerNativeStubClass;

        Method telephonyCall;
        Method telephonyEndCall;
        Method telephonyAnswerCall;
        Method getDefault;

        Method[] temps;
        Constructor[] serviceManagerConstructor;

        // Method getService;
        Object telephonyObject;
        Object serviceManagerObject;

        telephonyClass = Class.forName(telephonyName);
        telephonyStubClass = telephonyClass.getClasses()[0];
        serviceManagerClass = Class.forName(serviceManagerName);
        serviceManagerNativeClass = Class.forName(serviceManagerNativeName);

        Method getService = // getDefaults[29];
                serviceManagerClass.getMethod("getService", String.class);

        Method tempInterfaceMethod = serviceManagerNativeClass.getMethod(
                "asInterface", IBinder.class);

        Binder tmpBinder = new Binder();
        tmpBinder.attachInterface(null, "fake");

        serviceManagerObject = tempInterfaceMethod.invoke(null, tmpBinder);
        IBinder retbinder = (IBinder) getService.invoke(serviceManagerObject, "phone");
        Method serviceMethod = telephonyStubClass.getMethod("asInterface", IBinder.class);

        telephonyObject = serviceMethod.invoke(null, retbinder);
        //telephonyCall = telephonyClass.getMethod("call", String.class);
        telephonyEndCall = telephonyClass.getMethod("endCall");
        //telephonyAnswerCall = telephonyClass.getMethod("answerRingingCall");

        telephonyEndCall.invoke(telephonyObject);

    } catch (Exception e) {
        e.printStackTrace();
        Log.e("error",
                "FATAL ERROR: could not connect to telephony subsystem");

    }
}

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我认为这是不可能的，因为电话是由系统控制的，除非你有根控制，否则你可以在通话开始之前挂断电话，但不能在呼叫的中间挂断，因为通话时间变化很大。谢谢你的回答。