android悬浮按钮简单可拖拽

最新推荐文章于 2025-05-18 18:31:36 发布

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最新推荐文章于 2025-05-18 18:31:36 发布

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本文介绍了一个简单的悬浮按钮实现方法，通过Android系统的WindowManager服务创建并管理悬浮窗口，支持拖拽及点击事件。

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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);    }}