Android PopupWindow使用demo

1、封装弹出窗类

/**
 * 作者：created by meixi
 * 邮箱：[email protected]
 * 日期：2018/10/26 15
 */

public abstract class CommonPopupWindow {
    protected Context context;
    protected View contentView;
    protected PopupWindow mInstance;

    public CommonPopupWindow(Context c, int layoutRes, int w, int h) {
        context=c;
        contentView= LayoutInflater.from(c).inflate(layoutRes, null, false);

        initView();
        initEvent();

        mInstance=new PopupWindow(contentView, w, h, true);

        initWindow();
    }

    public View getContentView() { return contentView; }
    public PopupWindow getPopupWindow() { return mInstance; }

    protected abstract void initView();
    protected abstract void initEvent();
    protected void initWindow() {
        mInstance.setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));
        mInstance.setOutsideTouchable(true);
//        mInstance.setTouchable(true);
    }

    public void showBashOfAnchor(View anchor, LayoutGravity layoutGravity, int xmerge, int ymerge) {
        int[] offset=layoutGravity.getOffset(anchor, mInstance);
        mInstance.showAsDropDown(anchor, offset[0]+xmerge, offset[1]+ymerge);
    }

    public void showAsDropDown(View anchor, int xoff, int yoff) {
        mInstance.showAsDropDown(anchor, xoff, yoff);
    }

    public void showAtLocation(View parent, int gravity, int x, int y) {
        mInstance.showAtLocation(parent, gravity, x, y);
    }

    public static class LayoutGravity {
        private int layoutGravity;
        // waring, don't change the order of these constants!
        public static final int ALIGN_LEFT=0x1;
        public static final int ALIGN_ABOVE=0x2;
        public static final int ALIGN_RIGHT=0x4;
        public static final int ALIGN_BOTTOM=0x8;
        public static final int TO_LEFT=0x10;
        public static final int TO_ABOVE=0x20;
        public static final int TO_RIGHT=0x40;
        public static final int TO_BOTTOM=0x80;
        public static final int CENTER_HORI=0x100;
        public static final int CENTER_VERT=0x200;

        public LayoutGravity(int gravity) {
            layoutGravity=gravity;
        }

        public int getLayoutGravity() { return layoutGravity; }
        public void setLayoutGravity(int gravity) { layoutGravity=gravity; }

        public void setHoriGravity(int gravity) {
            layoutGravity&=(0x2+0x8+0x20+0x80+0x200);
            layoutGravity|=gravity;
        }
        public void setVertGravity(int gravity) {
            layoutGravity&=(0x1+0x4+0x10+0x40+0x100);
            layoutGravity|=gravity;
        }

        public boolean isParamFit(int param) {
            return (layoutGravity & param) > 0;
        }

        public int getHoriParam() {
            for(int i=0x1; i<=0x100; i=i<<2)
                if(isParamFit(i))
                    return i;
            return ALIGN_LEFT;
        }

        public int getVertParam() {
            for(int i=0x2; i<=0x200; i=i<<2)
                if(isParamFit(i))
                    return i;
            return TO_BOTTOM;
        }

        public int[] getOffset(View anchor, PopupWindow window) {
            int anchWidth=anchor.getWidth();
            int anchHeight=anchor.getHeight();

            int winWidth=window.getWidth();
            int winHeight=window.getHeight();
            View view=window.getContentView();
            if(winWidth<=0)
                winWidth=view.getWidth();
            if(winHeight<=0)
                winHeight=view.getHeight();

            int xoff=0;
            int yoff=0;

            switch (getHoriParam()) {
                case ALIGN_LEFT:
                    xoff=0; break;
                case ALIGN_RIGHT:
                    xoff=anchWidth-winWidth; break;
                case TO_LEFT:
                    xoff=-winWidth; break;
                case TO_RIGHT:
                    xoff=anchWidth; break;
                case CENTER_HORI:
                    xoff=(anchWidth-winWidth)/2; break;
                default:break;
            }
            switch (getVertParam()) {
                case ALIGN_ABOVE:
                    yoff=-anchHeight; break;
                case ALIGN_BOTTOM:
                    yoff=-winHeight; break;
                case TO_ABOVE:
                    yoff=-anchHeight-winHeight; break;
                case TO_BOTTOM:
                    yoff=0; break;
                case CENTER_VERT:
                    yoff=(-winHeight-anchHeight)/2; break;
                default:break;
            }
            return new int[]{ xoff, yoff };
        }
    }
}

2、activity调用代码

private CommonPopupWindow window;
LinearLayout linearLayout;
private View activityPopup;

//点击弹出，带动画效果

        textView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                PopupWindow win=window.getPopupWindow();

//                window.showBashOfAnchor(textView, layoutGravity, 0, 0);

                win.setAnimationStyle(R.style.animTranslate);
//                win.setAnimationStyle(R.style.animAlpha);
//                win.setAnimationStyle(R.style.animScale);
//                win.setAnimationStyle(R.style.animRotate);

                window.showAtLocation(activityPopup, Gravity.BOTTOM, 0, 0);
                WindowManager.LayoutParams lp=getWindow().getAttributes();
                lp.alpha=0.3f;
                getWindow().addFlags(WindowManager.LayoutParams.FLAG_DIM_BEHIND);
                getWindow().setAttributes(lp);
            }
        });

    private void initPopupWindow() {
        DisplayMetrics dm = new DisplayMetrics();
        getWindowManager().getDefaultDisplay().getMetrics(dm);
        int nMultiple = dm.widthPixels;//宽

//        window=new CommonPopupWindow(this, R.layout.mypopup, ViewGroup.LayoutParams.MATCH_PARENT, (int) (screenHeight*0.7)) {
        window=new CommonPopupWindow(this, R.layout.mypopup, (int) (nMultiple*0.9), ViewGroup.LayoutParams.WRAP_CONTENT) {
            @Override
            protected void initView() {
                View view=getContentView();
                linearLayout =(LinearLayout)view.findViewById(R.id.oneli);

            }

            @Override
            protected void initEvent() {

                linearLayout.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View view) {
                        Toast.makeText(MainActivity.this,"ssssblue",Toast.LENGTH_SHORT).show();
                    }
                });
            }

            @Override
            protected void initWindow() {
                super.initWindow();
                PopupWindow instance=getPopupWindow();
                instance.setOnDismissListener(new PopupWindow.OnDismissListener() {
                    @Override
                    public void onDismiss() {
                        WindowManager.LayoutParams lp=getWindow().getAttributes();
                        lp.alpha=1.0f;
                        getWindow().clearFlags(WindowManager.LayoutParams.FLAG_DIM_BEHIND);
                        getWindow().setAttributes(lp);
                    }
                });
            }
        };
    }

  window.getPopupWindow().dismiss();//隐藏

demo链接：https://download.csdn.net/download/meixi_android/10746393

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