今天就跟大家聊聊有关怎么中Android中自定义一个悬浮窗控件，可能很多人都不太了解，为了让大家更加了解，小编给大家总结了以下内容，希望大家根据这篇文章可以有所收获。
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第一步设计类似Toast的类FloatWindow
package com.floatwindowtest.john.floatwindowtest.wiget;
import android.app.Activity;
import android.content.Context;
import android.graphics.PixelFormat;
import android.view.Gravity;
import android.view.KeyEvent;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.view.WindowManager;
import android.widget.FrameLayout;
import android.widget.LinearLayout;
import static android.view.ViewGroup.LayoutParams.MATCH_PARENT;
import static android.view.ViewGroup.LayoutParams.WRAP_CONTENT;
import static android.view.WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE;
import static android.view.WindowManager.LayoutParams.FLAG_WATCH_OUTSIDE_TOUCH;
/**
* Created by john on 2017/3/10.
*/
class FloatWindow {
private final Context mContext;
private WindowManager windowManager;
private View floatView;
private WindowManager.LayoutParams params;
public FloatWindow(Context mContext) {
this.mContext = mContext;
this.params = new WindowManager.LayoutParams();
}
/**
* 显示浮动窗口
* @param view
* @param x view距离左上角的x距离
* @param y view距离左上角的y距离
*/
void show(View view, int x, int y) {
this.windowManager = (WindowManager) this.mContext.getSystemService(Context.WINDOW_SERVICE);
params.height = WindowManager.LayoutParams.WRAP_CONTENT;
params.width = WindowManager.LayoutParams.WRAP_CONTENT;
params.gravity = Gravity.TOP | Gravity.LEFT;
params.format = PixelFormat.TRANSLUCENT;
params.x = x;
params.y = y;
params.type = WindowManager.LayoutParams.TYPE_TOAST;
params.flags = WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON | FLAG_NOT_FOCUSABLE | FLAG_WATCH_OUTSIDE_TOUCH
| WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM;
floatView = view;
windowManager.addView(floatView, params);
}
/**
* 显示浮动窗口
* @param view
* @param x
* @param y
* @param listener 窗体之外的监听
* @param backListener 返回键盘监听
*/
void show(View view, int x, int y, OutsideTouchListener listener, KeyBackListener backListener) {
this.windowManager = (WindowManager) this.mContext.getSystemService(Context.WINDOW_SERVICE);
final FloatWindowContainerView containerView = new FloatWindowContainerView(this.mContext, listener, backListener);
containerView.addView(view, WRAP_CONTENT, WRAP_CONTENT);
params.height = WindowManager.LayoutParams.WRAP_CONTENT;
params.width = WindowManager.LayoutParams.WRAP_CONTENT;
params.gravity = Gravity.TOP | Gravity.LEFT;
params.format = PixelFormat.TRANSLUCENT;
params.x = x;
params.y = y;
params.type = WindowManager.LayoutParams.TYPE_TOAST;
//
// params.flags = WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON
// | WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM | WindowManager.LayoutParams.FLAG_WATCH_OUTSIDE_TOUCH
// | WindowManager.LayoutParams. FLAG_NOT_FOCUSABLE ;
params.flags = WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON
| WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM | WindowManager.LayoutParams.FLAG_WATCH_OUTSIDE_TOUCH
| WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL;
floatView = containerView;
windowManager.addView(floatView, params);
}
/**
* 更新view对象文职
*
* @param offset_X x偏移量
* @param offset_Y Y偏移量
*/
public void updateWindowLayout(float offset_X, float offset_Y) {
params.x += offset_X;
params.y += offset_Y;
windowManager.updateViewLayout(floatView, params);
}
/**
* 关闭界面
*/
void dismiss() {
if (this.windowManager == null) {
this.windowManager = (WindowManager) this.mContext.getSystemService(Context.WINDOW_SERVICE);
}
if (floatView != null) {
windowManager.removeView(floatView);
}
floatView = null;
}
public void justHideWindow() {
this.floatView.setVisibility(View.GONE);
}
private class FloatWindowContainerView extends FrameLayout {
private OutsideTouchListener listener;
private KeyBackListener backListener;
public FloatWindowContainerView(Context context, OutsideTouchListener listener, KeyBackListener backListener) {
super(context);
this.listener = listener;
this.backListener = backListener;
}
@Override
public boolean dispatchKeyEvent(KeyEvent event) {
if (event.getKeyCode() == KeyEvent.KEYCODE_BACK) {
if (getKeyDispatcherState() == null) {
if (backListener != null) {
backListener.onKeyBackPressed();
}
return super.dispatchKeyEvent(event);
}
if (event.getAction() == KeyEvent.ACTION_DOWN && event.getRepeatCount() == 0) {
KeyEvent.DispatcherState state = getKeyDispatcherState();
if (state != null) {
state.startTracking(event, this);
}
return true;
} else if (event.getAction() == KeyEvent.ACTION_UP) {
KeyEvent.DispatcherState state = getKeyDispatcherState();
if (state != null && state.isTracking(event) && !event.isCanceled()) {
System.out.println("dsfdfdsfds");
if (backListener != null) {
backListener.onKeyBackPressed();
}
return super.dispatchKeyEvent(event);
}
}
return super.dispatchKeyEvent(event);
} else {
return super.dispatchKeyEvent(event);
}
}
@Override
public boolean onTouchEvent(MotionEvent event) {
final int x = (int) event.getX();
final int y = (int) event.getY();
if ((event.getAction() == MotionEvent.ACTION_DOWN)
&& ((x < 0) || (x >= getWidth()) || (y < 0) || (y >= getHeight()))) {
return true;
} else if (event.getAction() == MotionEvent.ACTION_OUTSIDE) {
if (listener != null) {
listener.onOutsideTouch();
}
System.out.println("dfdf");
return true;
} else {
return super.onTouchEvent(event);
}
}
}
}大家可能会注意到
// params.flags = WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON // | WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM | WindowManager.LayoutParams.FLAG_WATCH_OUTSIDE_TOUCH // | WindowManager.LayoutParams. FLAG_NOT_FOCUSABLE ; params.flags = WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON | WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM | WindowManager.LayoutParams.FLAG_WATCH_OUTSIDE_TOUCH | WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL;
这些设置有所不同，这就是我们要实现既能够监听窗口之外的触目事件，又不会影响他们自己的操作的关键地方 ，同时| WindowManager.LayoutParams. FLAG_NOT_FOCUSABLE ;和| WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL; 窗体是否监听到返回键的关键设置 需要指出的是一旦窗体监听到返回键事件，则当前Activity不会再监听到返回按钮事件了，所以大家可根据自己的实际情况出发做出选择。
为了方便管理这些浮动窗口的显示和消失，还写了一个管理窗口显示的类FloatWindowManager。这是一个单例模式 对应的显示窗口也是只显示一个。大家可以根据自己的需求是改变 这里不再明细。
package com.floatwindowtest.john.floatwindowtest.wiget;
import android.content.Context;
import android.view.View;
/**
*
* Created by john on 2017/3/10.
*/
public class FloatWindowManager {
private static FloatWindowManager manager;
private FloatWindow floatWindow;
private FloatWindowManager(){
}
public static synchronized FloatWindowManager getInstance(){
if(manager==null){
manager=new FloatWindowManager();
}
return manager;
}
public void showFloatWindow(Context context, View view,int x,int y){
if(floatWindow!=null){
floatWindow.dismiss();
}
floatWindow=new FloatWindow(context);
floatWindow.show(view,x,y);
}
public void showFloatWindow(Context context, View view, int x, int y, OutsideTouchListener listener,KeyBackListener backListener){
if(floatWindow!=null){
floatWindow.dismiss();
}
floatWindow=new FloatWindow(context);
floatWindow.show(view,0,0,listener,backListener);
}
public void dismissFloatWindow(){
if(floatWindow!=null){
floatWindow.dismiss();
}
}
public void justHideWindow(){
floatWindow.justHideWindow();
}
/**
* 更新位置
* @param offsetX
* @param offsetY
*/
public void updateWindowLayout(float offsetX, float offsetY){
floatWindow.updateWindowLayout(offsetX,offsetY);
};
}看完上述内容，你们对怎么中Android中自定义一个悬浮窗控件有进一步的了解吗？如果还想了解更多知识或者相关内容，请关注创新互联行业资讯频道，感谢大家的支持。
