Android Framework系列之IMF（三）

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我们知道当一个编辑框获得焦点的时候，将会create一个新的IME客户端，那么IMF框架是怎样处理这个事件的呢？

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首先调用EditText的构造函数EditTex->TextView->setText()???????????

?那么到了IME部分的流程又是如何的呢？
首先收到configure change的event调用onConfigurationChanged->inputmethodservice.onConfigurationChanged(conf)
 @Override public void onConfigurationChanged(Configuration newConfig) {        super.onConfigurationChanged(newConfig);                boolean visible = mWindowVisible;        int showFlags = mShowInputFlags;        boolean showingInput = mShowInputRequested;        CompletionInfo[] completions = mCurCompletions;        initViews();        mInputViewStarted = false;        mCandidatesViewStarted = false;        if (mInputStarted) {            doStartInput(getCurrentInputConnection(),                    getCurrentInputEditorInfo(), true);  //调用startinput，创建IME的input        }        if (visible) {            if (showingInput) {                // If we were last showing the soft keyboard, try to do so again.                if (onShowInputRequested(showFlags, true)) {                    showWindow(true);                    if (completions != null) {                        mCurCompletions = completions;                        onDisplayCompletions(completions);                    }                } else {                    hideWindow();                }            } else if (mCandidatesVisibility == View.VISIBLE) {                // If the candidates are currently visible, make sure the                // window is shown for them.                showWindow(false);            } else {                // Otherwise hide the window.                hideWindow();            }        }    }
?doStartInput->initialize->onInitializeInterface->onStartInput->onStartInputView.
onStartInputView中会handle各种IME的event并进一步调用IME自身的onCreate函数，做进一步的初始化以及receiver的rigister。
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