本文实例为大家分享了android仿华为手机悬浮窗的具体代码,供大家参考,具体内容如下
最近项目中有个需求就是要在android 系统桌面上写一个悬浮球,并使其具有返回,进到主页,打开设置等功能。类似于华为手机的悬浮球。这里主要用到windowManager来实现。
1.先来看看效果图主页的小圆点
点击小圆点之后展开,然后可以模拟虚拟按键,返回等功能。全局有效。
2.一步步来实现1.首先这个要常住在桌面,故得写在一个服务里面里面。服务的启动可以通过开机广播,或者在Activity 中启动后直接finish 掉,这里都做一下。方便点击测试
public class MainActivity extends Activity {
private static final int NOT_NOTICE = 2;//如果勾选了不再询问
private AlertDialog alertDialog;
private AlertDialog mDialog;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Intent intent = new Intent(MainActivity.this, FloatWindowService.class);
startService(intent);
finish();
}
}
public class FwBroadcastReceiver extends BroadcastReceiver {
public static final String TAG = "FwBroadcastReceiver";
public static final String ACTION_BOOT = "android.intent.action.BOOT_COMPLETED";
public static final String ACTION_STASRT_FLAOTWINDOW = "android.intent.action.start.FlaotWindow";
@Override
public void onReceive(Context context, Intent intent) {
Log.d(TAG, "intent:" + intent.getAction());
startFloatWindowService(context);
}
private void startFloatWindowService(Context context) {
Intent intent = new Intent(context, FloatWindowService.class);
context.startService(intent);
}
}
2.FloatWindowService 中去创建悬浮球
public class FloatWindowService extends Service {
/**
* 用于在线程中创建或移除悬浮窗。
*/
private Handler handler = new Handler();
/**
* 定时器,定时进行检测当前应该创建还是移除悬浮窗。
*/
private Timer timer;
@Override
public IBinder onBind(Intent intent) {
return null;
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
// 开启定时器,每隔0.5秒刷新一次
if (timer == null) {
timer = new Timer();
timer.scheduleAtFixedRate(new RefreshTask(), 0, 500);
}
return super.onStartCommand(intent, flags, startId);
}
@Override
public void onDestroy() {
super.onDestroy();
// Service被终止的同时也停止定时器继续运行
if (timer != null) {
timer.cancel();
timer = null;
}
}
class RefreshTask extends TimerTask {
@Override
public void run() {
// 没有悬浮窗显示,则创建悬浮窗。
if ( !MyWindowManager.isWindowShowing()) {
handler.post(new Runnable() {
@Override
public void run() {
MyWindowManager.createSmallWindow(getApplicationContext());
}
});
}
}
3. 核心部分,创建大小悬浮窗
public class MyWindowManager {
/**
* 小悬浮窗View的实例
*/
private static FloatWindowSmallView smallWindow;
/**
* 大悬浮窗View的实例
*/
private static FloatWindowBigView bigWindow;
/**
* 小悬浮窗View的参数
*/
private static LayoutParams smallWindowParams;
/**
* 大悬浮窗View的参数
*/
private static LayoutParams bigWindowParams;
/**
* 用于控制在屏幕上添加或移除悬浮窗
*/
private static WindowManager mWindowManager;
/**
* 创建一个小悬浮窗。初始位置为屏幕的右部中间位置。
*
* @param context 必须为应用程序的Context.
*/
public static void createSmallWindow(Context context) {
WindowManager windowManager = getWindowManager(context);
int screenWidth = windowManager.getDefaultDisplay().getWidth();
int screenHeight = windowManager.getDefaultDisplay().getHeight();
if (smallWindow == null) {
smallWindow = new FloatWindowSmallView(context);
if (smallWindowParams == null) {
smallWindowParams = new LayoutParams();
smallWindowParams.type = LayoutParams.TYPE_APPLICATION_OVERLAY;
smallWindowParams.format = PixelFormat.RGBA_8888;
smallWindowParams.flags = LayoutParams.FLAG_NOT_TOUCH_MODAL
| LayoutParams.FLAG_NOT_FOCUSABLE; // 注意这里的flag和type
smallWindowParams.gravity = Gravity.LEFT | Gravity.TOP;
smallWindowParams.width = FloatWindowSmallView.viewWidth;
smallWindowParams.height = FloatWindowSmallView.viewHeight;
smallWindowParams.x = screenWidth;
smallWindowParams.y = screenHeight / 2;
}
smallWindow.setParams(smallWindowParams);
windowManager.addView(smallWindow, smallWindowParams);
}
}
/**
* 将小悬浮窗从屏幕上移除。
*
* @param context 必须为应用程序的Context.
*/
public static void removeSmallWindow(Context context) {
if (smallWindow != null) {
WindowManager windowManager = getWindowManager(context);
windowManager.removeView(smallWindow);
smallWindow = null;
}
}
/**
* 创建一个大悬浮窗。位置为屏幕正中间。
*
* @param context 必须为应用程序的Context.
*/
public static void createBigWindow(Context context) {
WindowManager windowManager = getWindowManager(context);
int screenWidth = windowManager.getDefaultDisplay().getWidth();
int screenHeight = windowManager.getDefaultDisplay().getHeight();
if (bigWindow == null) {
bigWindow = new FloatWindowBigView(context);
if (bigWindowParams == null) {
bigWindowParams = new LayoutParams();
// bigWindowParams.x = screenWidth / 2 - FloatWindowBigView.viewWidth / 2;
// bigWindowParams.y = screenHeight / 2 - FloatWindowBigView.viewHeight / 2;
bigWindowParams.type = LayoutParams.TYPE_APPLICATION_OVERLAY;
bigWindowParams.flags = LayoutParams.FLAG_NOT_FOCUSABLE; // 这里的flag,如果不加这个,这这个界面的返回键(上面实际图的返回按钮)则没有作用,因为这个界面会消耗这个模拟的返回按键
bigWindowParams.format = PixelFormat.RGBA_8888;
bigWindowParams.gravity = Gravity.RIGHT;
bigWindowParams.width = FloatWindowBigView.viewWidth;
bigWindowParams.height = FloatWindowBigView.viewHeight;
}
windowManager.addView(bigWindow, bigWindowParams);
}
}
/**
* 将大悬浮窗从屏幕上移除。
*
* @param context 必须为应用程序的Context.
*/
public static void removeBigWindow(Context context) {
if (bigWindow != null) {
WindowManager windowManager = getWindowManager(context);
windowManager.removeView(bigWindow);
bigWindow = null;
}
}
/**
* 是否有悬浮窗(包括小悬浮窗和大悬浮窗)显示在屏幕上。
*
* @return 有悬浮窗显示在桌面上返回true,没有的话返回false。
*/
public static boolean isWindowShowing() {
return smallWindow != null || bigWindow != null;
}
/**
* 如果WindowManager还未创建,则创建一个新的WindowManager返回。否则返回当前已创建的WindowManager。
*
* @param context 必须为应用程序的Context.
* @return WindowManager的实例,用于控制在屏幕上添加或移除悬浮窗。
*/
private static WindowManager getWindowManager(Context context) {
if (mWindowManager == null) {
mWindowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
}
return mWindowManager;
}
4.小悬浮窗布局
public class FloatWindowSmallView extends LinearLayout {
/**
* 记录小悬浮窗的宽度
*/
public static int viewWidth;
/**
* 记录小悬浮窗的高度
*/
public static int viewHeight;
/**
* 记录系统状态栏的高度
*/
private static int statusBarHeight;
/**
* 用于更新小悬浮窗的位置
*/
private WindowManager windowManager;
/**
* 小悬浮窗的参数
*/
private WindowManager.LayoutParams mParams;
/**
* 记录当前手指位置在屏幕上的横坐标值
*/
private float xInScreen;
/**
* 记录当前手指位置在屏幕上的纵坐标值
*/
private float yInScreen;
/**
* 记录手指按下时在屏幕上的横坐标的值
*/
private float xDownInScreen;
/**
* 记录手指按下时在屏幕上的纵坐标的值
*/
private float yDownInScreen;
/**
* 记录手指按下时在小悬浮窗的View上的横坐标的值
*/
private float xInView;
/**
* 记录手指按下时在小悬浮窗的View上的纵坐标的值
*/
private float yInView;
public FloatWindowSmallView(Context context) {
super(context);
windowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
LayoutInflater.from(context).inflate(R.layout.float_window_small, this);
View view = findViewById(R.id.small_window_layout);
viewWidth = view.getLayoutParams().width;
viewHeight = view.getLayoutParams().height;
}
@Override
public boolean onTouchEvent(MotionEvent event) {
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
// 手指按下时记录必要数据,纵坐标的值都需要减去状态栏高度
xInView = event.getX();
yInView = event.getY();
xDownInScreen = event.getRawX();
yDownInScreen = event.getRawY() - getStatusBarHeight();
xInScreen = event.getRawX();
yInScreen = event.getRawY() - getStatusBarHeight();
Log.d("xct","down"+"xInView:"+xInView+"yInView:"+yInView+"xInScreen:"+xInScreen+"yInScreen:"+yInScreen);
break;
case MotionEvent.ACTION_MOVE:
xInScreen = event.getRawX();
yInScreen = event.getRawY() - getStatusBarHeight();
// 手指移动的时候更新小悬浮窗的位置
Log.d("xct","move"+"xInView:"+xInView+"yInView:"+yInView+"xInScreen:"+xInScreen+"yInScreen:"+yInScreen);
updateViewPosition();
break;
case MotionEvent.ACTION_UP:
// 如果手指离开屏幕时,xDownInScreen和xInScreen相等,且yDownInScreen和yInScreen相等,则视为触发了单击事件。
Log.d("xct","up"+"xInView:"+xInView+"yInView:"+yInView+"xInScreen:"+xInScreen+"yInScreen:"+yInScreen);
if (xDownInScreen == xInScreen && yDownInScreen == yInScreen) {
openBigWindow();
}
break;
default:
break;
}
return true;
}
/**
* 将小悬浮窗的参数传入,用于更新小悬浮窗的位置。
*
* @param params
* 小悬浮窗的参数
*/
public void setParams(WindowManager.LayoutParams params) {
mParams = params;
}
/**
* 更新小悬浮窗在屏幕中的位置。
*/
private void updateViewPosition() {
mParams.x = (int) (xInScreen - xInView);
mParams.y = (int) (yInScreen - yInView);
windowManager.updateViewLayout(this, mParams);
}
/**
* 打开大悬浮窗,同时关闭小悬浮窗。
*/
private void openBigWindow() {
MyWindowManager.createBigWindow(getContext());
MyWindowManager.removeSmallWindow(getContext());
}
/**
* 用于获取状态栏的高度。
*
* @return 返回状态栏高度的像素值。
*/
private int getStatusBarHeight() {
if (statusBarHeight == 0) {
try {
Class<?> c = Class.forName("com.android.internal.R$dimen");
Object o = c.newInstance();
Field field = c.getField("status_bar_height");
int x = (Integer) field.get(o);
statusBarHeight = getResources().getDimensionPixelSize(x);
} catch (Exception e) {
e.printStackTrace();
}
}
return statusBarHeight;
}
}
5.大悬浮窗布局
public class FloatWindowBigView extends LinearLayout{
/**
* 记录大悬浮窗的宽度
*/
public static int viewWidth;
/**
* 记录大悬浮窗的高度
*/
public static int viewHeight;
/**
* 记录当前手指位置在屏幕上的横坐标值
*/
private float xInScreen;
/**
* 记录当前手指位置在屏幕上的纵坐标值
*/
private float yInScreen;
private static int statusBarHeight;
/**
* 记录手指按下时在屏幕上的横坐标的值
*/
private float xDownInScreen;
/**
* 记录手指按下时在屏幕上的纵坐标的值
*/
private float yDownInScreen;
/**
* 记录手指按下时在小悬浮窗的View上的横坐标的值
*/
private float xInView;
/**
* 记录手指按下时在小悬浮窗的View上的纵坐标的值
*/
private float yInView;
@Override
public boolean onTouchEvent(MotionEvent event) {
Log.d("xct","onTouchEvent");
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
// 手指按下时记录必要数据,纵坐标的值都需要减去状态栏高度
xInView = event.getX();
yInView = event.getY();
xDownInScreen = event.getRawX();
yDownInScreen = event.getRawY() - getStatusBarHeight();
xInScreen = event.getRawX();
yInScreen = event.getRawY() - getStatusBarHeight();
Log.d("xct", "down" + "xInView:" + xInView + "yInView:" + yInView + "xInScreen:" + xInScreen + "yInScreen:" + yInScreen);
break;
case MotionEvent.ACTION_MOVE:
xInScreen = event.getRawX();
yInScreen = event.getRawY() - getStatusBarHeight();
// 手指移动的时候更新小悬浮窗的位置
Log.d("xct", "move" + "xInView:" + xInView + "yInView:" + yInView + "xInScreen:" + xInScreen + "yInScreen:" + yInScreen);
break;
case MotionEvent.ACTION_UP:
// 如果手指离开屏幕时,xDownInScreen和xInScreen相等,且yDownInScreen和yInScreen相等,则视为触发了单击事件。
if (xInView < 0 || yInView < 0 || yInView > 445){
ContronPresent.getInstance().closeBigFlaot(getContext());
}
Log.d("xct", "up" + "xInView:" + xInView + "yInView:" + yInView + "xInScreen:" + xInScreen + "yInScreen:" + yInScreen);
break;
default:
break;
}
return super.onTouchEvent(event);
}
public FloatWindowBigView(final Context context) {
super(context);
LayoutInflater.from(context).inflate(R.layout.float_window_big, this);
View view = findViewById(R.id.big_window_layout);
viewWidth = view.getLayoutParams().width;
viewHeight = view.getLayoutParams().height;
Button close = findViewById(R.id.close);
Button back = findViewById(R.id.back);
Button home = findViewById(R.id.home);
Button rorate = findViewById(R.id.rorate);
Button control = findViewById(R.id.control);
close.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// 点击返回的时候,移除大悬浮窗,创建小悬浮窗
MyWindowManager.removeBigWindow(context);
MyWindowManager.createSmallWindow(context);
}
});
back.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
new Thread(){
@Override
public void run() {
new Instrumentation().sendKeyDownUpSync(KeyEvent.KEYCODE_BACK);
}
}.start();
}
});
home.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Log.d("xct","去home页");
}
});
rorate.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
}
});
control.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Log.d("xct","控制中心");
}
});
}
private int getStatusBarHeight() {
if (statusBarHeight == 0) {
try {
Class<?> c = Class.forName("com.android.internal.R$dimen");
Object o = c.newInstance();
Field field = c.getField("status_bar_height");
int x = (Integer) field.get(o);
statusBarHeight = getResources().getDimensionPixelSize(x);
} catch (Exception e) {
e.printStackTrace();
}
}
return statusBarHeight;
}
@Override
public boolean dispatchKeyEvent(KeyEvent event) {
Log.i("xct", "dispatchKeyEvent: "+event.getKeyCode());
return true;
}
@Override
public boolean dispatchTouchEvent(MotionEvent ev) {
Log.d("xct","dispatchTouchEvent");
return super.dispatchTouchEvent(ev);
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
Log.d("xct","onKeyDown:"+keyCode);
return super.onKeyDown(keyCode, event);
}
}
6.需要注意的
这里需要注意的是,一是权限问题,因为我是系统权限,故不用申请,如果第三方需要使用,则如果动态申请。
另外就是在这我这个例子中,大悬浮窗中的模拟返回按键,是回有按键传递的,故大悬浮窗的参数中必须加入 bigWindowParams.flags = LayoutParams.FLAG_NOT_FOCUSABLE; 否则返回事件会传不下去。