public AccessibilityNodeInfo getRootInActiveWindow() {
return this.mUiAutomation.getRootInActiveWindow();
注入事件:
public boolean injectInputEvent(InputEvent event, boolean sync) {
return this.mUiAutomation.injectInputEvent(event, sync);
Bitmap screenshot = this.mUiAutomation.takeScreenshot();
UiAutomatorBridge
UiAutomatorBridge相当于UiAutomation的代理,进行获取界面空间信息和注入事件,截图都需要经过UiAutomatorBridge
private boolean injectEventSync(InputEvent event) {
return this.mUiAutomatorBridge.injectInputEvent(event, true);
this.mUiAutomatorBridge.getRootInActiveWindow();
QueryController
QueryController做的所有事情就是去把UiSelector这个UI控件选择子翻译成真实的适合我们使用的Android.view.accessibility.AccessibilityNodeInfo
protected AccessibilityNodeInfo findAccessibilityNodeInfo(long timeout)
AccessibilityNodeInfo node = null;
long startMills = SystemClock.uptimeMillis();
long currentMills = 0L;
while (currentMills <= timeout) {
node = getQueryController().findAccessibilityNodeInfo(getSelector());
if (node != null) {
break;
UiDevice.getInstance().runWatchers();
currentMills = SystemClock.uptimeMillis() - startMills;
if (timeout > 0L) {
SystemClock.sleep(1000L);
return node;
UiDevice的实例化
private UiDevice(Instrumentation instrumentation) {
this.mInstrumentation = instrumentation;
UiAutomation uiAutomation = instrumentation.getUiAutomation();
this.mUiAutomationBridge = new InstrumentationUiAutomatorBridge(instrumentation.getContext(), uiAutomation);