andorid封装分页控件

r囧r小猫 2022-06-10 14:19 248阅读 0赞

主要代码：

package com.sun.framework.CustomizeVC;
    
    import android.content.Context;
    import android.graphics.Color;
    import android.graphics.drawable.GradientDrawable;
    import android.util.AttributeSet;
    import android.util.Log;
    import android.view.Gravity;
    import android.view.View;
    import android.view.ViewGroup;
    import android.widget.LinearLayout;
    import android.widget.RelativeLayout;
    
    import com.sun.framework.Utils.ScreenUtils;
    
    import java.util.ArrayList;
    import java.util.List;
    
    /**
     * Created by apple on 2017/4/20.
     */
    
    public class PagerVC extends RelativeLayout {
    
        public int mDotContentWidth;
        public int mDotContentHeight;
        public int mSelectDotBgColor;//选中的点背景颜色
        public int mUnSelectDotBgColor;//没选中的点背景颜色
        public int mDotStrokeWidth;//点边框宽度
        public int mDotStrokeColor;//点边框夜色
    
        Context context;
        int numberOfPages;
        int currentPage;
        ScreenUtils screenUtils;
        List<View> Dots;
        int mDotWidthHeight;
        int mDotCornerRadius;
        private OnDotClickListener onDotClickListener;
    
        public PagerVC(Context context) {
            super(context);
        }
    
        public PagerVC(Context context, AttributeSet attrs) {
            this(context, attrs, -1);
        }
    
        public PagerVC(Context context, AttributeSet attrs, int defStyleAttr) {
            super(context, attrs, defStyleAttr);
            init(context);
        }
    
        private void init(Context context){
            this.context = context;
            screenUtils = new ScreenUtils(context);
            mDotContentWidth = screenUtils.dp2px(15);
            mDotContentHeight = screenUtils.dp2px(20);
            mDotStrokeWidth = 0;
            mDotStrokeColor = Color.BLACK;
            mSelectDotBgColor = Color.WHITE;
            mUnSelectDotBgColor = Color.GRAY;
        }
    
        public void setNumberOfPages(int numberOfPages){
            this.numberOfPages = numberOfPages;
            refreshPagerVC();
        }
    
        public int getNumberOfPages() {
            return numberOfPages;
        }
    
        public void setCurrentPage(int currentPage){
            this.currentPage = currentPage;
            switchDot();
        }
    
        public int getCurrentPage() {
            return currentPage;
        }
    
        private void refreshPagerVC() {
            if (this.getChildCount() > 0){
                this.removeAllViews();
            }
            int min;
            if (mDotContentHeight < mDotContentWidth){
                min = mDotContentHeight;
            }else  {
                min = mDotContentWidth;
            }
            mDotWidthHeight = min/2;
            mDotCornerRadius = mDotWidthHeight/2;
    
            LinearLayout content = new LinearLayout(context);
            content.setOrientation(LinearLayout.HORIZONTAL);
            this.addView(content);
            RelativeLayout.LayoutParams contentParams = (LayoutParams) content.getLayoutParams();
            contentParams.width = ViewGroup.LayoutParams.WRAP_CONTENT;
            contentParams.height = ViewGroup.LayoutParams.WRAP_CONTENT;
            contentParams.addRule(RelativeLayout.CENTER_HORIZONTAL, RelativeLayout.TRUE);
            Dots = new ArrayList<>();
            for (int i=0;i<numberOfPages;i++){
                RelativeLayout DotContent = new RelativeLayout(context);
                content.addView(DotContent);
                LinearLayout.LayoutParams dotContentParams = (LinearLayout.LayoutParams) DotContent.getLayoutParams();
                dotContentParams.width = mDotContentWidth;
                dotContentParams.height = mDotContentHeight;
    
                View Dot = new View(context);
                Dot.setTag(i);
                DotContent.addView(Dot);
                RelativeLayout.LayoutParams DotsParams = (LayoutParams) Dot.getLayoutParams();
                DotsParams.width = mDotWidthHeight;
                DotsParams.height = mDotWidthHeight;
                DotsParams.addRule(RelativeLayout.CENTER_HORIZONTAL, RelativeLayout.TRUE);
                DotsParams.addRule(RelativeLayout.CENTER_VERTICAL, RelativeLayout.TRUE);
    
                GradientDrawable drawable = new GradientDrawable();
                drawable.setColor(mUnSelectDotBgColor);
                drawable.setCornerRadius(mDotCornerRadius);
                drawable.setStroke(mDotStrokeWidth,mDotStrokeColor);
                Dot.setBackgroundDrawable(drawable);
    
                Dots.add(Dot);
            }
            for (View item : Dots){
                item.setClickable(true);
                item.setOnClickListener(On_Dot_Click);
            }
    
        }
    
        private void switchDot(){
            if (null == Dots){
                return;
            }
            int size = Dots.size();
            if (currentPage >= size){
                currentPage = size-1;
            }
            for (View view : Dots){
                GradientDrawable drawable = (GradientDrawable) view.getBackground();
                drawable.setColor(mUnSelectDotBgColor);
            }
            View view = Dots.get(currentPage);
            GradientDrawable drawable = (GradientDrawable) view.getBackground();
            drawable.setColor(mSelectDotBgColor);
        }
    
        OnClickListener On_Dot_Click = new OnClickListener() {
            @Override
            public void onClick(View view) {
                int tag = (int) view.getTag();
                if (null != onDotClickListener){
                    onDotClickListener.OnDotClickListener(tag);
                }
            }
        };
    
        public void setOnDotClickListener(OnDotClickListener onDotClickListener) {
            this.onDotClickListener = onDotClickListener;
        }
    
        public interface OnDotClickListener {
            boolean OnDotClickListener(int index);
        }
    
    }

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