android悬浮按钮简单可拖拽

来源：互联网发布：足球比赛编排软件编辑：程序博客网时间：2024/06/05 16:29

本文根据别人代码改编，找不到原地址了，希望原主看到后可联系我重新声明。

import android.content.Context;import android.graphics.PixelFormat;import android.view.Gravity;import android.view.MotionEvent;import android.view.View;import android.view.WindowManager;import android.widget.ImageView;/** * Created by Administrator on 2017/11/29 0029. */public class SuspendDialog {    private WindowManager wm = null;    private WindowManager.LayoutParams wmParams = null;    private ImageView leftbtn = null;    boolean isMove = false;    private float mStartX, mStartY;    private Context context;    private onClickSuspendListener onClickSuspendListener;    public SuspendDialog(Context context) {        this.context = context;        wm = (WindowManager) context.getApplicationContext().getSystemService(Context.WINDOW_SERVICE);        wmParams = new WindowManager.LayoutParams(                WindowManager.LayoutParams.WRAP_CONTENT,                WindowManager.LayoutParams.WRAP_CONTENT,                WindowManager.LayoutParams.TYPE_TOAST,                WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE | WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL,                PixelFormat.TRANSLUCENT);    }    public void show(){        initFloatView();    }    public void destory(){        wm.removeView(leftbtn);        wm = null;    }    public void dismiss(){        wm.removeView(leftbtn);    }    private void initFloatView() {        //设置LayoutParams(全局变量）相关参数        wmParams.gravity = Gravity.RIGHT | Gravity.BOTTOM;        //水平、垂直的距离百分比        wmParams.verticalMargin = 0.1f;        wmParams.horizontalMargin = 0.1f;        //以屏幕左上角为原点，设置x、y初始值        wmParams.x = 0;        wmParams.y = 0;        //设置悬浮窗口长宽数据        wmParams.width = 200;        wmParams.height = 200;        createLeftFloatView();        leftbtn.invalidate();    }    private void createLeftFloatView() {        leftbtn = new ImageView(context);        leftbtn.setImageResource(R.mipmap.ic_launcher);        //调整悬浮窗口        //显示myFloatView图像        wm.addView(leftbtn, wmParams);        leftbtn.setOnTouchListener(new View.OnTouchListener() {            @Override            public boolean onTouch(View v, MotionEvent event) {                // 当前值以屏幕左上角为原点                switch (event.getAction()) {                    case MotionEvent.ACTION_DOWN:                        mStartX = event.getRawX();                        mStartY = event.getRawY();                        break;                    case MotionEvent.ACTION_MOVE:                        isMove = true;                        wmParams.x -= event.getRawX() - mStartX;                        wmParams.y -= event.getRawY() - mStartY;                        wm.updateViewLayout(leftbtn, wmParams);                        mStartX = event.getRawX();                        mStartY = event.getRawY();                        break;                    case MotionEvent.ACTION_UP:                        if(!isMove ){                                                         if (onClickSuspendListener != null)onClickSuspendListener.onClick(leftbtn);
                        }                        isMove = false;                        break;                }                // 消耗触摸事件                return true;            }        });    }    public void setOnClickListener(onClickSuspendListener onClickSuspendListener){        this.onClickSuspendListener = onClickSuspendListener;    }    public interface onClickSuspendListener{        void onClick(View view);    }}

原文中写的view的点击事件是没用的，已经被ontouch事件消耗，所以需要重新设置点击监听。

另外原文中view放置在左边垂直居中，但是当把view放到右边底部的时候就无法拖拽，原因是要把触摸事件中把+=改为-=。

这是一个简单的悬浮按钮，简单的功能。

阅读全文

0 0