Android实现表情功能

/**
     * This is called during layout when the size of this view has changed. If
     * you were just added to the view hierarchy, you're called with the old
     * values of 0.
     *
     * @param w Current width of this view.
     * @param h Current height of this view.
     * @param oldw Old width of this view.
     * @param oldh Old height of this view.
     */
    protected void onSizeChanged(int w, int h, int oldw, int oldh) {
}

int minKeyboardHeight = dm.heightPixels / 4; （屏幕高度1/4）

//①锁高：
LinearLayout.LayoutParams layoutParams = (LinearLayout.LayoutParams) CommentView.getLayoutParams();
layoutParams.height = DialogView.getHeight();
layoutParams.weight = 0.0f;
llContentView.setLayoutParams(layoutParams);
 
//②表情布局显示
EmotionView.setVisibility(View.VISIBLE)
//隐藏键盘
 
//③释放高度
LinearLayout.LayoutParams layoutParams = (LinearLayout.LayoutParams) DialogView.getLayoutParams();
layoutParams.height = LinearLayout.LayoutParams.MATCH_PARENT;
layoutParams.weight = 1.0f;
llContentView.setLayoutParams(layoutParams);

//①锁高：
LinearLayout.LayoutParams layoutParams = (LinearLayout.LayoutParams) CommentView.getLayoutParams();
layoutParams.height = DialogView.getHeight();
layoutParams.weight = 0.0f;
llContentView.setLayoutParams(layoutParams);
 
//②表情布局隐藏
EmotionView.setVisibility(View.GONE)
//显示键盘
 
 
//③释放高度
LinearLayout.LayoutParams layoutParams = (LinearLayout.LayoutParams) DialogView.getLayoutParams();
layoutParams.height = LinearLayout.LayoutParams.MATCH_PARENT;
layoutParams.weight = 1.0f;
llContentView.setLayoutParams(layoutParams);