robotium和appium区别_robotium自动化测试_robotium(10)

    /**
     * Perform calling of an activitys {@link Activity#onCreate}
     * method.  The default implementation simply calls through to that method.
     * 
     * @param activity The activity being created.
     * @param icicle The previously frozen state (or null) to pass through to
     *               onCreate().
     */
    public void callActivityOnCreate(Activity activity, Bundle icicle) {
        ...
        activity.performCreate(icicle);
        ...
}

从代码可以看到它做的事情也就是直接调用Activity类的performCreate方法：

   final void performCreate(Bundle icicle) {
        onCreate(icicle);
        mVisibleFromClient = !mWindow.getWindowStyle().getBoolean(
                com.android.internal.R.styleable.Window_windowNoDisplay, false);
        

而performCreate方法最终调用的就是onCreate方法。robotium注意performCreate这个方法是属于Internal API，它不是public出去给外部使用的.所以这里就好比Instrumentation勾住了本应该系统调用的onCreate方法，然后由用户自己来控制勾住的这个方法什么时候执行。

安卓从Android4.3开始引进了UiAutomation框架来支持通过Accessibility API来实现针对用户界面UI层面的功能测试，Instrumentation也提供了相应的接口来获得UiAutomation实例：

    /**
     * Gets the {@link UiAutomation} instance.
     * <p>
     * <strong>Note:</strong> The APIs exposed via the returned {@link UiAutomation}
     * work across application boundaries while the APIs exposed by the instrumentation
     * do not. For example, {@link Instrumentation#sendPointerSync(MotionEvent)} will
     * not allow you to inject the event in an app different from the instrumentation
     * target, while {@link UiAutomation#injectInputEvent(android.view.InputEvent, boolean)}
     * will work regardless of the current application.
     * </p>
     * <p>
     * A typical test case should be using either the {@link UiAutomation} or
     * {@link Instrumentation} APIs. Using both APIs at the same time is not
     * a mistake by itself but a client has to be aware of the APIs limitations.
     * </p>
     * @return The UI automation instance.
     *
     * @see UiAutomation
     */
    public UiAutomation getUiAutomation() {
        if (mUiAutomationConnection != null) {
            if (mUiAutomation == null) {
                mUiAutomation = new UiAutomation(getTargetContext().getMainLooper(),
                        mUiAutomationConnection);
                mUiAutomation.connect();
            }
            return mUiAutomation;
        }
        return null;
    }

关于UiAutomation更多的描述请查看本人上一个系列关于UiAutomator源码分析的文章，这里列出来方便大家浏览：

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