android 浮窗
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背景是公司要求做一个浮动的图片在首页。可随手指移动，抬起时自动靠边。
方法一，
1.在Application中实例WindowManager
private WindowManager.LayoutParams wmParams = new WindowManager.LayoutParams();
public WindowManager.LayoutParams getMywmParams() {
return wmParams;
}3.创建控件 GifView 是一个播放gif的控件 可以换成ImageView等等
public class FloatScanView extends GifView {
private final int statusHeight;
int sW;
int sH;
private float mTouchStartX;
private float mTouchStartY;
private float x;
private float y;
private boolean isMove = false;
private Context context;
private float topheight;//上标题栏高度
private float bottomheight;//下标题栏距顶高度
private WindowManager wm = (WindowManager) getContext()
.getApplicationContext().getSystemService(Context.WINDOW_SERVICE);
// //此wmParams变量为获取的全局变量，用以保存悬浮窗口的属性
private WindowManager.LayoutParams wmParams = ((MainApplication) getContext()
.getApplicationContext()).getMywmParams();
private float mLastX;
private float mLastY;
private float mStartX;
private float mStartY;
private long mLastTime;
private long mCurrentTime;
private Activity act;
public FloatScanView(Context context, float topheight, Activity act) {
this(context, null);
this.context = context;
this.topheight = topheight * 2 - statusHeight;
this.bottomheight = sH - topheight * 2;
this.act = act;
}
public FloatScanView(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
public FloatScanView(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
sW = wm.getDefaultDisplay().getWidth();
sH = wm.getDefaultDisplay().getHeight();
statusHeight = getStatusHeight(context);
}
/**
* 获得状态栏的高度
*
* @param context
* @return
*/
public static int getStatusHeight(Context context) {
int statusHeight = -1;
try {
Class clazz = Class.forName("com.android.internal.R$dimen");
Object object = clazz.newInstance();
int height = Integer.parseInt(clazz.getField("status_bar_height")
.get(object).toString());
statusHeight = context.getResources().getDimensionPixelSize(height);
} catch (Exception e) {
e.printStackTrace();
}
return statusHeight;
}
@Override
public boolean onTouchEvent(MotionEvent event) {
// 获取相对屏幕的坐标，即以屏幕左上角为原点
x = event.getRawX();
y = event.getRawY() - statusHeight; // statusHeight是系统状态栏的高度
// Log.i("currP", "currX" + x + "====currY" + y);
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN: // 捕获手指触摸按下动作
// 获取相对View的坐标，即以此View左上角为原点
mTouchStartX = event.getX();
mTouchStartY = event.getY();
mStartX = event.getRawX();
mStartY = event.getRawY();
mLastTime = System.currentTimeMillis();
// Log.i("startP", "startX" + mTouchStartX + "====startY"
// + mTouchStartY);
isMove = false;
break;
case MotionEvent.ACTION_MOVE: // 捕获手指触摸移动动作
if (topheight >= y) {
y = topheight;
} else if (bottomheight <= y) {
y = bottomheight;
}
updateViewPosition();
isMove = true;
break;
case MotionEvent.ACTION_UP: // 捕获手指触摸离开动作
mLastX = event.getRawX();
mLastY = event.getRawY();
if (y < topheight) {
y = topheight;
}
if (y > bottomheight) {
y = bottomheight;
}
// 抬起手指时让floatView紧贴屏幕左右边缘
wmParams.x = wmParams.x <= (sW / 2) ? 0 : sW;
wmParams.y = (int) (y - mTouchStartY);
wm.updateViewLayout(this, wmParams);
mCurrentTime = System.currentTimeMillis();
if (mCurrentTime - mLastTime < 800) {
if (Math.abs(mStartX - mLastX) < 10.0
&& Math.abs(mStartY - mLastY) < 10.0) {
try {
if (!MainApplication.welcomeinfo.getT_AS_IMG().equals(
"")
&& !MainApplication.welcomeinfo
.getT_AS_CONTENT().equals("")) {
// 处理点击的事件
} else {
}
} catch (Exception e) {
}
}
}
break;
}
return true;
}
private void updateViewPosition() {
// 更新浮动窗口位置参数
wmParams.x = (int) (x - mTouchStartX);
wmParams.y = (int) (y - mTouchStartY);
wm.updateViewLayout(this, wmParams); // 刷新显示
}
} /*
* 浮窗区
*/
private WindowManager wm = null;
private WindowManager.LayoutParams wmParams = null;
private FloatScanView fsv = null;
private RelativeLayout main_master_appmain_headbar; /**
* 浮窗 启动浮窗用
*
* @return
*/
@SuppressWarnings("deprecation")
private void intt() {
wm = (WindowManager) getActivity().getApplicationContext()
.getSystemService(Context.WINDOW_SERVICE);
// wmParams = new WindowManager.LayoutParams();
sW = wm.getDefaultDisplay().getWidth();
sH = wm.getDefaultDisplay().getHeight();
System.out.println("屏幕宽度" + sW);
wmParams = ((MainApplication) getActivity().getApplication())
.getMywmParams();
wmParams.type = WindowManager.LayoutParams.TYPE_TOAST;
wmParams.format = PixelFormat.RGBA_8888;// 设置图片格式，效果为背景透明
wmParams.flags = WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL
| WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE;//
wmParams.gravity = Gravity.LEFT | Gravity.TOP;//
wmParams.x = wm.getDefaultDisplay().getWidth();
wmParams.y = (int) (unDisplayViewSize(main_master_appmain_headbar) * 6);//main_master_appmain_headbar我是自己的控件 y可直接赋值
wmParams.width = 150;
wmParams.height = 150;
fsv = new FloatScanView(getActivity().getApplicationContext(),
unDisplayViewSize(main_master_appmain_headbar), getActivity());
//changefuworingice();//设置浮窗样式
wm.addView(fsv, wmParams);
} /*
* 浮窗 浮窗用 计算控件高度
*
* @param view
*
* @return
*/
public float unDisplayViewSize(View view) {
float size;
int width = View.MeasureSpec.makeMeasureSpec(0,
View.MeasureSpec.UNSPECIFIED);
int height = View.MeasureSpec.makeMeasureSpec(0,
View.MeasureSpec.UNSPECIFIED);
view.measure(width, height);
size = view.getMeasuredHeight();
return size;
}第二种方法
我的需求是只需要在首页显示一个浮动窗体就可以，在这以前提下让我去每一个手机开权限 我有点受不了
所以找到另一种替代的方法
int sW;
int sH;
private float mLastX;
private float mLastY;
private float mStartX;
private float mStartY;
private long mLastTime;
private long mCurrentTime;
Button fuchuang;
private int x;
private int y;private void intt( ) {
wm = (WindowManager) getActivity().getApplicationContext()
.getSystemService(Context.WINDOW_SERVICE);
sW = wm.getDefaultDisplay().getWidth();
sH = wm.getDefaultDisplay().getHeight();
changefuworingice();
fuchuang.setOnTouchListener(new OnTouchListener() {
int[] temp = new int[] { 0, 0 };
float hight = unDisplayViewSize(main_master_appmain_headbar);
public boolean onTouch(View v, MotionEvent event) {
int eventaction = event.getAction();
x = (int) event.getRawX();
y = (int) event.getRawY();
switch (eventaction) {
case MotionEvent.ACTION_DOWN: // touch down so check if the
temp[0] = (int) event.getX();
temp[1] = y - v.getTop();
// 获取相对View的坐标，即以此View左上角为原点
mStartX = event.getRawX();
mStartY = event.getRawY();
mLastTime = System.currentTimeMillis();
break;
case MotionEvent.ACTION_MOVE: // touch drag with the ball
if (y < hight * 2) {
y = (int) hight * 2;
} else if (y > (sH - (hight * 1.5))) {
y = (int) (sH - (hight * 1.5));
}
v.layout(x - temp[0], y - temp[1], x + v.getWidth()
- temp[0], y - temp[1] + v.getHeight());
break;
case MotionEvent.ACTION_UP:
mLastX = event.getRawX();
mLastY = event.getRawY();
// 抬起手指时让floatView紧贴屏幕左右边缘
temp[0] = (int) mLastX;
temp[1] = y - v.getTop();
if (mLastX > sW / 2) {
v.layout(sW - v.getWidth(), y - temp[1], sW, y
- temp[1] + v.getHeight());
} else {
v.layout(0, y - temp[1], x + v.getWidth() - temp[0], y
- temp[1] + v.getHeight());
}
mCurrentTime = System.currentTimeMillis();
if (mCurrentTime - mLastTime < 800) {
if (Math.abs(mStartX - mLastX) < 10.0
&& Math.abs(mStartY - mLastY) < 10.0) {
// 处理点击的事件
}
}
//每次移动都要设置其layout，不然由于父布局可能嵌套listview，当父布局发生改变冲毁（如下拉刷新时）则移动的view会回到原来的位置
RelativeLayout.LayoutParams lpFeedback = new RelativeLayout.LayoutParams(
RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
lpFeedback.leftMargin = v.getLeft();
lpFeedback.topMargin = v.getTop();
lpFeedback.width=v.getWidth();
lpFeedback.height=v.getHeight();
lpFeedback.setMargins(v.getLeft(), v.getTop(), 0, 0);
v.setLayoutParams(lpFeedback);
break;
}
return true;
}
});
}最关键的是最后
RelativeLayout.LayoutParams lpFeedback = new RelativeLayout.Layout.....