uiautomator点击，没有文字或内容说明一个的ImageButton [英] uiautomator click on a ImageButton with no text or content-desc

问题描述

在4.2.2模拟器，在现在从音乐播放屏幕，我们有preV，播放和下一ImageButtons。不幸的是这3个按钮没有文字或contet-递减值。

On 4.2.2 emulator, in Now Playing screen from Music, we have the prev, play and next ImageButtons. Unfortunately these 3 buttons have no text or contet-desc values.

我想点击其中一个，我想答案就在于这样的：

I want to click on one of them and I think the answer lies in something like:

  UiObject relLayout = new UiObject(new UiSelector()
  .className("android.widget.LinearLayout").index(1));
  relLayout.click();

但有几个的LinearLayout在此屏幕上，我不知道如何选择特定的LinearLayout。在code以上剪断将美元洗牌p $ PSS，因为它也是包含3图像按钮（库，随机播放和重复）一个LinearLayout中。

But there are several LinearLayout in this screen and I don't know how to select a specific LinearLayout. The code snipped above will press on shuffle as it is also a LinearLayout that contains 3 image buttons(library, shuffle and repeat).

我们知道我们的LinearLayout的唯一的事情是，它是孩子，与指数5，另外的LinearLayout这是孩子，索引为0，一个的FrameLayout这是孩子，索引为0，一个LinearLayout中的哪是孩子，索引为0，一个的FrameLayout的。

The only thing we know about our LinearLayout is that it is the child, with index 5, of another LinearLayout which is the child, with index 0, of a FrameLayout which is the child, with index 0, of a LinearLayout which is the child, with index 0, of a FrameLayout.

问题是，我们怎么能知道UiSelector寻找一个特定的LinearLayout？

The question is how can we tell UiSelector to look for a certain LinearLayout?

谢谢，

亚历

推荐答案

在这样的情况下，我通过边界点击。这可能会导致问题原因更改设备大小，边界会发生变化。所以我得到了屏幕高度，使你知道你使用的设备，然后通过边界点击。你可以找到你的边界通过 uiautomatorviewer

In situations like this, I click by bounds. This is can cause problems cause when you change device sizes, the bounds will change. So I get the screen height so you know which device your using, then click by bounds. You can find your bounds via uiautomatorviewer

 int height = UiDevice.getInstance().getDisplayHeight();

if(height == THE_SIZE_EXPECTED){
  UiDevice.getInstance().click(int_x, int_y);
 } else if (height == ANOTHER_SCREEN_HEIGHT_OPTION){ 
   UiDevice.getInstance().click(int_x, int_y);
 } 

希望这有助于

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