Android仿IOS系统悬浮窗效果
在一些场合里,我们使用悬浮窗会有很大的便利,比如IOS系统的悬浮窗,360或者其他手机卫士的悬浮窗等等。
本篇博客,我们创造出两个悬浮窗,通过点击小悬浮窗打开或者关闭大悬浮窗(一个播放控制器)。
代码如下:
在这之前,我们需要在manifest中申请权限:
<uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />
并且,悬浮窗这个权限我们需要手动在手机找到应用权限管理,允许这个权限才行
小悬浮窗的界面代码float_normal_view.xml:
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="65dp" android:layout_height="65dp" android:id="@+id/ll_float_normal" android:background="@drawable/float_bg" android:gravity="center" android:orientation="vertical"> <ImageView android:id="@+id/iv_show_control_view" android:layout_gravity="center" android:background="@drawable/white_ring" android:layout_width="35dp" android:orientation="vertical" android:layout_height="35dp" > </ImageView> </LinearLayout>
大悬浮窗的界面代码float_control_view:
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/ll_float_control" android:layout_width="300dp" android:layout_height="100dp" android:background="@drawable/float_bg" android:gravity="center_horizontal|bottom" android:orientation="vertical"> <SeekBar android:id="@+id/timeline" android:paddingTop="3dp" android:paddingBottom="3dp" android:layout_width="match_parent" android:layout_height="wrap_content" android:focusable="true" android:maxHeight="5.0dip" android:minHeight="5.0dip" android:paddingLeft="16.0dip" android:paddingRight="16.0dip" android:progressDrawable="@drawable/po_seekbar" android:thumb="@drawable/seekbar_thumb" /> <RelativeLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_gravity="bottom" android:paddingBottom="10dp" android:paddingEnd="20dp" android:paddingStart="20dp" android:paddingTop="10dp"> <ImageButton android:id="@+id/ibt_rewind" android:layout_width="40dp" android:layout_height="40dp" android:layout_centerVertical="true" android:layout_marginEnd="20dp" android:layout_marginRight="20dp" android:layout_toLeftOf="@+id/ibt_play" android:layout_toStartOf="@+id/ibt_play" android:background="@drawable/rewind" /> <ImageButton android:id="@+id/ibt_play" android:layout_width="50dp" android:layout_height="50dp" android:layout_centerHorizontal="true" android:background="@drawable/pause" /> <ImageButton android:id="@+id/ibt_forward" android:layout_width="40dp" android:layout_height="40dp" android:layout_centerVertical="true" android:layout_marginLeft="20dp" android:layout_marginStart="20dp" android:layout_toEndOf="@+id/ibt_play" android:layout_toRightOf="@+id/ibt_play" android:background="@drawable/forward" /> </RelativeLayout> </LinearLayout>
入口activity(FloatActivity ):
public class FloatActivity extends Activity { MyWindowManager myWindowManager; @Override protected void onCreate(@Nullable Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); myWindowManager = MyWindowManager.getInstance(); myWindowManager.createNormalView(this.getApplicationContext()); } }
悬浮窗管理器MyWindowManager:
/** * Created by shiweixian on 2017/3/7. * 悬浮窗管理器 * 创建,移除 * 单例模式 */ public class MyWindowManager { private FloatNormalView normalView; private FloatControlView controlView; private static MyWindowManager instance; private WindowManager windowManager; private MyWindowManager() { } public static MyWindowManager getInstance() { if (instance == null) instance = new MyWindowManager(); return instance; } private WindowManager getWindowManager(Context context) { if (windowManager == null) windowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE); return windowManager; } /** * 判断小悬浮窗是否存在 * * @return */ public boolean isNormalViewExists() { return normalView != null; } /** * 判断播放器这个大悬浮窗是否存在 * * @return */ public boolean isControlViewExists() { return controlView != null; } /** * 创建小型悬浮窗 */ public void createNormalView(Context context) { if (normalView == null) { normalView = new FloatNormalView(context); } } /** * 移除悬浮窗 * * @param context */ public void removeNormalView(Context context) { if (normalView != null) { windowManager.removeView(normalView); normalView = null; } } /** * 创建小型悬浮窗 */ public void createControlView(Context context) { if (controlView == null) controlView = new FloatControlView(context); } /** * 移除悬浮窗 * * @param context */ public void removeControlView(Context context) { if (controlView != null) { WindowManager windowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE); windowManager.removeView(controlView); controlView = null; } } }
小悬浮窗FloatNormalView:
/** * Created by shiwe on 2017/3/7. * 缩小的悬浮窗 */ public class FloatNormalView 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 FloatNormalView(Context context) { super(context); windowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE); LayoutInflater.from(context).inflate(R.layout.float_normal_view, this); View view = findViewById(R.id.ll_float_normal); viewWidth = view.getLayoutParams().width; viewHeight = view.getLayoutParams().height; initLayoutParams(); } /** * 初始化参数 */ private void initLayoutParams() { //屏幕宽高 int screenWidth = windowManager.getDefaultDisplay().getWidth(); int screenHeight = windowManager.getDefaultDisplay().getHeight(); mParams = new WindowManager.LayoutParams(); //总是出现在应用程序窗口之上。 mParams.type = WindowManager.LayoutParams.TYPE_PHONE; // FLAG_NOT_TOUCH_MODAL不阻塞事件传递到后面的窗口 // FLAG_NOT_FOCUSABLE 悬浮窗口较小时,后面的应用图标由不可长按变为可长按,不设置这个flag的话,home页的划屏会有问题 mParams.flags = WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE | WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL; //悬浮窗默认显示的位置 mParams.gravity = Gravity.START | Gravity.TOP; //指定位置 mParams.x = screenWidth - viewWidth * 2; mParams.y = screenHeight / 2 + viewHeight * 2; //悬浮窗的宽高 mParams.width = WindowManager.LayoutParams.WRAP_CONTENT; mParams.height = WindowManager.LayoutParams.WRAP_CONTENT; mParams.format = PixelFormat.TRANSPARENT; windowManager.addView(this, mParams); } @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(); 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 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。 if (xDownInScreen == xInScreen && yDownInScreen == yInScreen) { openOrCloseControlView(); } 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); } /** * 打开或关闭大悬浮窗。 */ private void openOrCloseControlView() { MyWindowManager manager = MyWindowManager.getInstance(); if (!manager.isControlViewExists()) manager.createControlView(getContext()); else manager.removeControlView(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; } }
大悬浮窗FloatControlView:
/** * Created by shiwe on 2017/3/7. * 缩小的悬浮窗 */ public class FloatNormalView 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 FloatNormalView(Context context) { super(context); windowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE); LayoutInflater.from(context).inflate(R.layout.float_normal_view, this); View view = findViewById(R.id.ll_float_normal); viewWidth = view.getLayoutParams().width; viewHeight = view.getLayoutParams().height; initLayoutParams(); } /** * 初始化参数 */ private void initLayoutParams() { //屏幕宽高 int screenWidth = windowManager.getDefaultDisplay().getWidth(); int screenHeight = windowManager.getDefaultDisplay().getHeight(); mParams = new WindowManager.LayoutParams(); //总是出现在应用程序窗口之上。 mParams.type = WindowManager.LayoutParams.TYPE_PHONE; // FLAG_NOT_TOUCH_MODAL不阻塞事件传递到后面的窗口 // FLAG_NOT_FOCUSABLE 悬浮窗口较小时,后面的应用图标由不可长按变为可长按,不设置这个flag的话,home页的划屏会有问题 mParams.flags = WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE | WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL; //悬浮窗默认显示的位置 mParams.gravity = Gravity.START | Gravity.TOP; //指定位置 mParams.x = screenWidth - viewWidth * 2; mParams.y = screenHeight / 2 + viewHeight * 2; //悬浮窗的宽高 mParams.width = WindowManager.LayoutParams.WRAP_CONTENT; mParams.height = WindowManager.LayoutParams.WRAP_CONTENT; mParams.format = PixelFormat.TRANSPARENT; windowManager.addView(this, mParams); } @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(); 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 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。 if (xDownInScreen == xInScreen && yDownInScreen == yInScreen) { openOrCloseControlView(); } 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); } /** * 打开或关闭大悬浮窗。 */ private void openOrCloseControlView() { MyWindowManager manager = MyWindowManager.getInstance(); if (!manager.isControlViewExists()) manager.createControlView(getContext()); else manager.removeControlView(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; } }
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