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一、问题：

Dialog中有输入框时，显示后无法自动弹起软键盘，原因就不赘述了，自行Google。

一、解决办法：

开启独立线程，线程中使用while循环，循环调用弹起软键盘方法，直至showSoftInput返回true，则终止循环。循环内加入sleep，避免调用次数过多。亲测循环不超过5次，即可成功开启软键盘，效果流畅丝滑。

注意：不要用toggleSoftInput相关方法，那样会使得你的软键盘管理混乱！

public class KeyboardManager {private final String TAG = "KeyboardManager";private static volatile KeyboardManager mKeyboardManager;private InputMethodManager mInputMethodManager;public static synchronized KeyboardManager with() {if (mKeyboardManager == null) {synchronized (KeyboardManager.class) {if (mKeyboardManager == null) {mKeyboardManager = new KeyboardManager();}}}return mKeyboardManager;}private KeyboardManager() {}public InputMethodManager getInputMethodManager() {if (null == mInputMethodManager)mInputMethodManager = (InputMethodManager) ApplicationExt.getInstance().getSystemService(Context.INPUT_METHOD_SERVICE);return mInputMethodManager;}public void show(View mView) {if (getInputMethodManager() == null || null == mView) {return;}mView.requestFocus();getInputMethodManager().showSoftInput(mView, 0);}Thread mThread;public void showDelayed(View mView) {if (getInputMethodManager() == null || null == mView) {return;}mView.requestFocus();mThread = new Thread(new Runnable() {@Overridepublic void run() {while (true) {if (mView.isShown() && mView.isFocused()) {boolean isShow = getInputMethodManager().showSoftInput(mView, 0);Log.i(TAG, "keyboard is show " + isShow);if (isShow)break;else {try {Thread.sleep(20);} catch (InterruptedException e) {throw new RuntimeException(e);}}}Log.i(TAG, "continue show keyboard");}}});mThread.start();}public void hide(View mView) {if (getInputMethodManager() == null || null == mView) {return;}mView.clearFocus();getInputMethodManager().hideSoftInputFromWindow(mView.getWindowToken(), 0);}
}