Android 表情面板和软键盘切换时跳闪问题的解决方法

/** * 作者： chenZY * 时间： 2017/8/26 18:12 * 描述： */public class EmojiKeyboard { private Activity activity; //文本输入框 private EditText editText; //表情面板 private View emojiPanelView; //内容View,即除了表情布局和输入框布局以外的布局 //用于固定输入框一行的高度以防止跳闪 private View contentView; private InputMethodManager inputMethodManager; private SharedPreferences sharedPreferences; private static final String EMOJI_KEYBOARD = "EmojiKeyboard"; private static final String KEY_SOFT_KEYBOARD_HEIGHT = "SoftKeyboardHeight"; private static final int SOFT_KEYBOARD_HEIGHT_DEFAULT = 654; private Handler handler; public EmojiKeyboard(Activity activity, EditText editText, View emojiPanelView, View emojiPanelSwitchView, View contentView) {  init(activity, editText, emojiPanelView, emojiPanelSwitchView, contentView); } private void init(Activity activity, EditText editText, View emojiPanelView, View emojiPanelSwitchView, View contentView) {  this.activity = activity;  this.editText = editText;  this.emojiPanelView = emojiPanelView;  this.contentView = contentView;  this.editText.setOnTouchListener(new View.OnTouchListener() {   @Override   public boolean onTouch(final View v, MotionEvent event) {    if (event.getAction() == MotionEvent.ACTION_UP && EmojiKeyboard.this.emojiPanelView.isShown()) {     lockContentViewHeight();     hideEmojiPanel(true);     unlockContentViewHeight();    }    return false;   }  });  this.contentView.setOnTouchListener(new View.OnTouchListener() {   @Override   public boolean onTouch(View view, MotionEvent motionEvent) {    if (motionEvent.getAction() == MotionEvent.ACTION_UP) {     if (EmojiKeyboard.this.emojiPanelView.isShown()) {      hideEmojiPanel(false);     } else if (isSoftKeyboardShown()) {      hideSoftKeyboard();     }    }    return false;   }  });  //用于弹出表情面板的View  emojiPanelSwitchView.setOnClickListener(new View.OnClickListener() {   @Override   public void onClick(View v) {    if (EmojiKeyboard.this.emojiPanelView.isShown()) {     lockContentViewHeight();     hideEmojiPanel(true);     unlockContentViewHeight();    } else {     if (isSoftKeyboardShown()) {      lockContentViewHeight();      showEmojiPanel();      unlockContentViewHeight();     } else {      showEmojiPanel();     }    }   }  });  this.inputMethodManager = (InputMethodManager) this.activity.getSystemService(Context.INPUT_METHOD_SERVICE);  this.sharedPreferences = this.activity.getSharedPreferences(EMOJI_KEYBOARD, Context.MODE_PRIVATE);  this.activity.getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_HIDDEN | WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE);  this.handler = new Handler();  init(); } /**  * 如果之前没有保存过键盘高度值  * 则在进入Activity时自动打开键盘，并把高度值保存下来  */ private void init() {  if (!sharedPreferences.contains(KEY_SOFT_KEYBOARD_HEIGHT)) {   handler.postDelayed(new Runnable() {    @Override    public void run() {     showSoftKeyboard(true);    }   }, 200);  } } /**  * 当点击返回键时需要先隐藏表情面板  */ public boolean interceptBackPress() {  if (emojiPanelView.isShown()) {   hideEmojiPanel(false);   return true;  }  return false; } /**  * 锁定内容View以防止跳闪  */ private void lockContentViewHeight() {  LinearLayout.LayoutParams layoutParams = (LinearLayout.LayoutParams) contentView.getLayoutParams();  layoutParams.height = contentView.getHeight();  layoutParams.weight = 0; } /**  * 释放锁定的内容View  */ private void unlockContentViewHeight() {  handler.postDelayed(new Runnable() {   @Override   public void run() {    ((LinearLayout.LayoutParams) contentView.getLayoutParams()).weight = 1;   }  }, 200); } /**  * 获取键盘的高度  */ private int getSoftKeyboardHeight() {  Rect rect = new Rect();  activity.getWindow().getDecorView().getWindowVisibleDisplayFrame(rect);  //屏幕当前可见高度，不包括状态栏  int displayHeight = rect.bottom - rect.top;  //屏幕可用高度  int availableHeight = ScreenUtils.getAvailableScreenHeight(activity);  //用于计算键盘高度  int softInputHeight = availableHeight - displayHeight - ScreenUtils.getStatusBarHeight(activity);  Log.e("TAG-di", displayHeight + "");  Log.e("TAG-av", availableHeight + "");  Log.e("TAG-so", softInputHeight + "");  if (softInputHeight != 0) {   // 因为考虑到用户可能会主动调整键盘高度，所以只能是每次获取到键盘高度时都将其存储起来   sharedPreferences.edit().putInt(KEY_SOFT_KEYBOARD_HEIGHT, softInputHeight).apply();  }  return softInputHeight; } /**  * 获取本地存储的键盘高度值或者是返回默认值  */ private int getSoftKeyboardHeightLocalValue() {  return sharedPreferences.getInt(KEY_SOFT_KEYBOARD_HEIGHT, SOFT_KEYBOARD_HEIGHT_DEFAULT); } /**  * 判断是否显示了键盘  */ private boolean isSoftKeyboardShown() {  return getSoftKeyboardHeight() != 0; } /**  * 令编辑框获取焦点并显示键盘  */ private void showSoftKeyboard(boolean saveSoftKeyboardHeight) {  editText.requestFocus();  inputMethodManager.showSoftInput(editText, 0);  if (saveSoftKeyboardHeight) {   handler.postDelayed(new Runnable() {    @Override    public void run() {     getSoftKeyboardHeight();    }   }, 200);  } } /**  * 隐藏键盘  */ private void hideSoftKeyboard() {  inputMethodManager.hideSoftInputFromWindow(editText.getWindowToken(), 0); } /**  * 显示表情面板  */ private void showEmojiPanel() {  int softKeyboardHeight = getSoftKeyboardHeight();  if (softKeyboardHeight == 0) {   softKeyboardHeight = getSoftKeyboardHeightLocalValue();  } else {   hideSoftKeyboard();  }  emojiPanelView.getLayoutParams().height = softKeyboardHeight;  emojiPanelView.setVisibility(View.VISIBLE);  if (emojiPanelVisibilityChangeListener != null) {   emojiPanelVisibilityChangeListener.onShowEmojiPanel();  } } /**  * 隐藏表情面板，同时指定是否随后开启键盘  */ private void hideEmojiPanel(boolean showSoftKeyboard) {  if (emojiPanelView.isShown()) {   emojiPanelView.setVisibility(View.GONE);   if (showSoftKeyboard) {    showSoftKeyboard(false);   }   if (emojiPanelVisibilityChangeListener != null) {    emojiPanelVisibilityChangeListener.onHideEmojiPanel();   }  } } public interface OnEmojiPanelVisibilityChangeListener {  void onShowEmojiPanel();  void onHideEmojiPanel(); } private OnEmojiPanelVisibilityChangeListener emojiPanelVisibilityChangeListener; public void setEmoticonPanelVisibilityChangeListener(OnEmojiPanelVisibilityChangeListener emojiPanelVisibilityChangeListener) {  this.emojiPanelVisibilityChangeListener = emojiPanelVisibilityChangeListener; }}