如何发送触摸到ActivityInstrumentationTestCase2测试时，修复INJECT_EVENT许可例外 [英] How to fix INJECT_EVENT permission exception when sending touches to an ActivityInstrumentationTestCase2 test

问题描述

虽然有显示，这样的事情应该工作的例子很多，下面code失败。
这code生活在一个与真实的项目相关的测试项目。

 公共类MyTest的扩展ActivityInstrumentationTestCase2＆LT; MyActivity＆GT; {    公共MyTest的（字符串名称）
    {
        超（com.mypackage.activities，MyActivity.class）;
        的setName（名）;
    }    公共无效testTap（）抛出的Throwable
    {
        //根据通过的JavaDoc需要MotionEvent.obtain
        长时间的停机= SystemClock.uptimeMillis（）;
        长EVENTTIME = SystemClock.uptimeMillis（）;        仪器I = getInstrumentation（）;        //设置的信息需要我们向下和向上的活动创造一个水龙头
        MotionEvent downEvent = MotionEvent.obtain（停机时间，EVENTTIME，MotionEvent.ACTION_DOWN，300，20，0）;
        MotionEvent upEvent = MotionEvent.obtain（停机时间，EVENTTIME，MotionEvent.ACTION_UP，300，20，0）;        //发送下/上点击事件
        i.sendPointerSync（downEvent）;
        i.sendPointerSync（upEvent）;        //延时看到的结果
        Thread.currentThread（）睡眠（3000）。
    }}
 

这将引发
    java.lang.SecurityException异常：注射到另一个应用程序需要INJECT_EVENTS权限
在i.sendPointerSync（）调用。
我也曾尝试view.onTouchEvent（事件）和view.dispatchTouchEvent（事件）都没有成功。

我能想到的唯一的事情是，如果被测试，其中这是在项目工作现场的例子。这似乎是不好的，因为该建议是测试分离到不同的项目，并能够从生成服务器的东西，如运行它们：

  ADB -e外壳上午仪器-w com.mypackage.activities.test / android.test.InstrumentationTestRunner
 

解决方案

这可能意味着你的主要项目，测试项目或模拟器版本不同步。

Although there are many examples showing that something like this should work, the following code fails. This code lives in a test project that is associated with the real project.

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 = SystemClock.uptimeMillis();
        long eventTime = SystemClock.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, eventTime, MotionEvent.ACTION_UP, 300, 20, 0);

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

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

}

This throws a java.lang.SecurityException: Injecting to another application requires INJECT_EVENTS permission on the i.sendPointerSync() calls. I have also tried view.onTouchEvent(event) and view.dispatchTouchEvent(event) without success.

The only thing I can think of is if the examples where this is working live in the project being tested. This seems bad because the recommendation is to separate tests to a different project and be able to run them from a build server with something like:

adb -e shell am instrument -w com.mypackage.activities.test/android.test.InstrumentationTestRunner

解决方案

This probably means that your main project, your test project or your emulator versions are out of sync.

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