旋转ImageView和TextView的效果实现

自定义图标视图组件

最新推荐文章于 2021-05-26 05:46:03 发布

withlogical

最新推荐文章于 2021-05-26 05:46:03 发布

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分类专栏： Android 文章标签： constructor string float class

本文链接：https://blog.youkuaiyun.com/salc3k/article/details/6748027

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本文介绍了一个自定义的图标视图组件，该组件包含了文本视图和图标视图，并支持旋转角度和背景图片的设置。

public class IconViewGroup extends ViewGroup{    
        TextView mTextView;    
        ImageView mImageView;//显示对应的icon    
        private Context mContext;    
        /**   
         * 命名区域   
         */   
        private final String namespace = "http://com.oppo.examples";     
        /**   
         * 保存创建旋转角度   
         */   
        private float mRotateDegrees;     
        /**   
         * 保存创建背景图片的ID   
         */   
        private int mBackGroudDrawableId;    
        /**   
         * 利用图片ID加载图片   
         */   
        private Drawable mBackGroudDrawable;    
        /**   
         * 原始图片所需宽、高   
         */   
        private int mBackGroundWidth;    
        private int mBackGroundHeight;    
        private View view;    
            
        private static final int ICON_WIDTH=46;//显示数字的TextView的长宽    
        private static final int ICON_HEIGHT=46;    
            
        private static final int TEXT_WIDTH=46;//显示数字的TextView的长宽    
        private static final int TEXT_HEIGHT=260;    
            
        public IconViewGroup(Context context) {    
                super(context);    
                // TODO Auto-generated constructor stub    
        }    
        public IconViewGroup(Context context, AttributeSet attrs) {    
                super(context, attrs);    
                init(context);    
                mContext = context;    
                mBackGroudDrawableId=attrs.getAttributeResourceValue(namespace, "background", R.drawable.item_on);    
                mBackGroudDrawable = context.getResources().getDrawable(    
                                mBackGroudDrawableId);                    
                mRotateDegrees=attrs.getAttributeFloatValue(namespace, "rotateDegrees",30.0f);                    
        }    
   
        private void init(Context context) {    
                // TODO Auto-generated method stub    
                mTextView=new MyTextView(context);    
                mTextView.setTextSize(28);    
                mTextView.setGravity(Gravity.CENTER_VERTICAL);    
				//mTextView.setBackgroundColor(0xFFFFFF00);    
                mTextView.setText(R.string.app_name);    
                mTextView.setTextColor(0xF0FFFFFF);    
                mImageView=new ImageView(context);    
                mImageView.setBackgroundResource(R.drawable.icon);    
                this.addView(mTextView);    
                this.addView(mImageView);    
        }    
   
        @Override   
        protected void onLayout(boolean changed, int l, int t, int r, int b) {    
                // TODO Auto-generated method stub    
                int ivWidth=mImageView.getMeasuredWidth();    
                int ivHeight=mImageView.getMeasuredHeight();    
                int tvWidth=mTextView.getMeasuredWidth();    
                int tvHeight=mTextView.getMeasuredHeight();    
                mTextView.measure(r - l, b - t);    
                mTextView.layout(5+ivWidth+10, getHeight()-tvHeight-5,getWidth(),getHeight()-5);    
                mImageView.measure(r - l, b - t);    
                mImageView.layout(5, 5+getHeight()-ivHeight, ivWidth,getHeight());    
   
        }    
            
        @Override   
        protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {    
                // TODO Auto-generated method stub    
                super.onMeasure(widthMeasureSpec, heightMeasureSpec);    
                /**   
                 * 设定View显示区域   
                 */   
                mBackGroundHeight=mBackGroudDrawable.getIntrinsicHeight();    
                mBackGroundWidth=mBackGroudDrawable.getIntrinsicWidth();    
                if (mRotateDegrees==90.0f) {    
                        setMeasuredDimension(mBackGroundHeight, mBackGroundWidth);    
                } else {    
                        setMeasuredDimension(mBackGroundWidth, mBackGroundHeight);    
                }                    
        }    
            
        @Override   
        protected void dispatchDraw(Canvas canvas) {    
                // TODO Auto-generated method stub    
                canvas.rotate(mRotateDegrees);    
                mBackGroudDrawable.setBounds(0, 0, mBackGroundWidth, mBackGroundHeight);    
                mBackGroudDrawable.draw(canvas);    
                super.dispatchDraw(canvas);    
        }            
}