基于自定义控件KeyboardDetectorRelativeLayout,实现评论功能

缺乏、安全感 2022-06-01 06:17 217阅读 0赞

项目需求,要求实现评论功能,查了好久,发现基于这个控件进行实现较为简单.

闲话不多说,首先activity的输入法模式设置为

android:windowSoftInputMode="stateHidden|adjustResize"

效果图如下:

![SouthEast][]

![SouthEast 1][]

还是先把巨人的肩膀放出来,

/** * Created by GerryRun on 2017/12/28 0028. */ public class KeyboardDetectorRelativeLayout extends RelativeLayout{
    
        private OnSoftKeyboardListener listener;
    
        public KeyboardDetectorRelativeLayout(Context context) {
            this(context, null);
            // TODO Auto-generated constructor stub }
    
        public KeyboardDetectorRelativeLayout(Context context, AttributeSet attrs) {
            this(context, attrs, 0);
        }
    
        public KeyboardDetectorRelativeLayout(Context context, AttributeSet attrs, int defStyle) {
            super(context, attrs, defStyle);
        }
    
        //获取输入法的高度主要在此方法中执行,当界面布局发生变化时，会执行此方法，从而获取到输入法的高度
        @Override
        protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
            // TODO Auto-generated method stub final int proposedHeight = View.MeasureSpec.getSize(heightMeasureSpec);
            final int actualHeight = getHeight();
            int diff = actualHeight - proposedHeight;
            Log.i("TAG", "proposedHeight=" + proposedHeight);
            Log.i("TAG", "actualHeight=" + actualHeight);
            Log.i("TAG", "diff=" + diff);
            if (diff > 100) {
                Log.i("TAG", KLApplication.getInstance().getApplicationContext().toString());
                SharedPreferences sh = KLApplication.getInstance().getApplicationContext().getSharedPreferences("in_put", Context.MODE_PRIVATE);
                SharedPreferences.Editor editor = sh.edit();
                editor.putInt("size", diff);
                Log.i("TAG", "size=" + diff);
                editor.commit();
                if (null != listener) {
                    listener.onShown(diff);
                }
    
            } else if (diff < -100) {
                if (null != listener) {
                    listener.onHidden();
                }
            }
            super.onMeasure(widthMeasureSpec, heightMeasureSpec);
    
            if (null != listener) {
                listener.onMeasureFinished();
            }
    
    
        }
    
        public void setOnSoftKeyboardListener(OnSoftKeyboardListener listener) {
            this.listener = listener;
        }
    
        //输入法面板弹出。隐藏以及布局测量完毕执行的方法
        public interface OnSoftKeyboardListener {
            void onShown(int keyboardHeight);
    
            void onHidden();
    
            void onMeasureFinished();
        }
    }

再拿 **KeyboardDetectorRelativeLayout作为父布局,正常流程findViewById走完之后,再实现自定义View里的接口**

//输入法面板弹出。隐藏以及布局测量完毕执行的方法
    public interface OnSoftKeyboardListener {
        void onShown(int keyboardHeight);
    
        void onHidden();
    
        void onMeasureFinished();
    }

实现接口方法如下,直接在相应方法: private KeyboardDetectorRelativeLayout.OnSoftKeyboardListener mOnSoftKeyboardListener = new KeyboardDetectorRelativeLayout.OnSoftKeyboardListener() {
        @Override
        public void onShown(int keyboardHeight) {
            //输入法显示的时候,调用此方法,如显示输入框等逻辑
            scroll_no_use_pinglun_list.setVisibility(View.VISIBLE);
            rela_edit_text_pinglun_input.setVisibility(View.VISIBLE);
            edit_text_pinglun_input.requestFocus();
    
            if (scrollLayoutParams == null) {
                scrollLayoutParams = new RelativeLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
                scroll_no_use_pinglun_list.setLayoutParams(scrollLayoutParams);
            }
    
            if (marginLayoutParams == null) {
                marginLayoutParams = new RelativeLayout.LayoutParams(rela_edit_text_pinglun_input.getLayoutParams());
                marginLayoutParams.setMargins(marginLayoutParams.leftMargin, (int) (KLApplication.getHight() - KLApplication.dp2px(70)
                        - marginLayoutParams.topMargin - keyboardHeight), marginLayoutParams.rightMargin, marginLayoutParams.bottomMargin);
    
                layoutParams = new RelativeLayout.LayoutParams(marginLayoutParams);
                rela_edit_text_pinglun_input.setLayoutParams(layoutParams);
            }
    
            edit_text_pinglun_input.setHint("评论:" + mList.get(mClickPosition).nickName);
        }
    
        @Override
        public void onHidden() {
            //输入法隐藏时调用
            scroll_no_use_pinglun_list.setVisibility(View.GONE);
            rela_edit_text_pinglun_input.setVisibility(View.GONE);
        }
    
        @Override
        public void onMeasureFinished() {
    
        }
    };

[SouthEast]: /images/20220601/8f9197e851b24688b10d33a6c1f22727.png
[SouthEast 1]: /images/20220601/e7948878caae47139f6c9471af6cee61.png