package cn.sinata.xldutils.view.utils;
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import android.app.Activity;
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import android.graphics.Bitmap;
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import android.graphics.drawable.Drawable;
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import android.text.Spanned;
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import android.util.SparseArray;
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import android.view.View;
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import android.widget.ImageView;
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import android.widget.TextView;
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/**
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* 简化findviewbyId写法
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*
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* @author sinata
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*/
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public class ViewHolder {
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private View mConvertView;
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private Activity mActivity;
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private SparseArray<View> mViewArray; // 包含了View引用的SparseArray
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public ViewHolder(View convertView) {
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this.mConvertView = convertView;
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}
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public ViewHolder(Activity activity) {
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this.mActivity = activity;
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}
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public <T extends View> T bind(int viewId) {// 通过ViewId得到View
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if (mActivity == null) {// ListAdapter的ViewHolder
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SparseArray<View> viewHolder = (SparseArray<View>) mConvertView
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.getTag();
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if (viewHolder == null) {
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viewHolder = new SparseArray<View>();
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mConvertView.setTag(viewHolder);
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}
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View childView = viewHolder.get(viewId);
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if (childView == null) {
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childView = mConvertView.findViewById(viewId);
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viewHolder.put(viewId, childView);
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}
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return (T) childView;
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} else { // Activity的ViewHolder
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if (mViewArray == null) {
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mViewArray = new SparseArray<View>();
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}
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View childView = mViewArray.get(viewId);
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if (childView == null) {
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childView = mActivity.findViewById(viewId);
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mViewArray.put(viewId, childView);
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}
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return (T) childView;
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}
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}
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/**
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* 取消绑定
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*/
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public void unBind(){
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if (mViewArray!=null) {
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mViewArray.clear();
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mViewArray = null;
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}
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this.mConvertView = null;
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this.mActivity = null;
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}
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/**
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* 通过ViewId设置Text
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*
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* @param viewId 视图id
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* @param text 文字
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*/
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public void setText(int viewId, CharSequence text) {// 通过ViewId设置Text
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if (bind(viewId) != null)
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((TextView) bind(viewId)).setText(text);
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}
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/**
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* 通过ViewId设置Text
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*
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* @param viewId 视图id
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* @param text 文字
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*/
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public void setText(int viewId, Spanned text) {// 通过ViewId设置Text
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((TextView) bind(viewId)).setText(text);
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}
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/**
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* 通过ViewId设置TextColor
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*
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* @param viewId 视图id
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* @param color 文字颜色
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*/
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public void setTextColor(int viewId, int color) {// 通过ViewId设置TextColor
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((TextView) bind(viewId)).setTextColor(color);
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}
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/**
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* 通过ViewId设置图片
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*
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* @param viewId
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* @param resId
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*/
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public void setImageResource(int viewId, int resId) {// 通过ViewId设置图片
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((ImageView) bind(viewId)).setImageResource(resId);
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}
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/**
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* 通过ViewId设置图片
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*
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* @param viewId
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* @param bm
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*/
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public void setImageBitmap(int viewId, Bitmap bm) {// 通过ViewId设置图片
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((ImageView) bind(viewId)).setImageBitmap(bm);
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}
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/**
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* 通过ViewId设置图片
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*
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* @param viewId
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* @param drawable
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*/
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public void setImageDrawable(int viewId, Drawable drawable) {// 通过ViewId设置图片
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((ImageView) bind(viewId)).setImageDrawable(drawable);
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}
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/**
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* 通过ViewId设置隐藏和显示
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*
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* @param viewId
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* @param visibility
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*/
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public void setVisibility(int viewId, int visibility) {// 通过ViewId设置隐藏和显示
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bind(viewId).setVisibility(visibility);
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}
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/**
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* 通过ViewId设置点击监听
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*
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* @param viewId
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* @param l
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*/
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public void setOnClickListener(int viewId, View.OnClickListener l) {// 通过ViewId设置点击监听
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bind(viewId).setOnClickListener(l);
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}
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}
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