android – 如何在向ActivityInstrumentationTestCase2测试发送触摸时修复INJECT_EVENT权限异常

public class myTest extends ActivityinstrumentationTESTCase2<MyActivity> {

    public myTest(String Name)
    {
        super("com.mypackage.activities",MyActivity.class);
        setName(Name);
    }

    public void testTap() throws Throwable
    {
        //required by MotionEvent.obtain according to JavaDocs
        long downTime = Sy@R_404_2407@Clock.uptimeMillis();
        long eventTime = Sy@R_404_2407@Clock.uptimeMillis();

        instrumentation i = getinstrumentation();

        //Setup the info needed for our down and up events to create a tap
        MotionEvent downevent = MotionEvent.obtain(downTime,eventTime,MotionEvent.ACTION_DOWN,300,20,0);
        MotionEvent upEvent = MotionEvent.obtain(downTime,MotionEvent.ACTION_UP,0);

        //Send the down/up tap event
        i.sendPointerSync(downevent);
        i.sendPointerSync(upEvent);

        //Delay to see the results
        Thread.currentThread().sleep(3000);
    }

}

这引发了一个
    Java.lang.SecurityException：注入另一个应用程序需要INjeCT_EVENTS权限
在i.sendPointerSync()调用上.
我也尝试过view.onTouchEvent(event)和view.dispatchTouchEvent(event)但没有成功.

我唯一能想到的是,如果这个例子在正在测试的项目中有效.这看起来很糟糕,因为建议将测试分离到不同的项目,并能够从构建服务器运行它们,例如：

adb -e sHell am instrument -w com.mypackage.activities.test/android.test.instrumentationTestRunner