本文实例为大家分享了Android实现悬浮窗效果的具体代码，供大家参考，具体内容如下
一、权限：
<uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />二、悬浮窗其实就是 WindowManager.addView(view,layoutParams)，直接上代码
1、单例创建FloatWindowManager
public class FloatWindowManager {
private volatile static FloatWindowManager mInstance;
private WindowManager mWindowManager;
private Context mContext;
private WindowManager.LayoutParams mLayoutParams;
private int layoutY;
private int layoutX;
private ValueAnimator animator;
private TextView textView;
public static synchronized FloatWindowManager getInstance() {
if (mInstance == null) {
synchronized (FloatWindowManager.class) {
if (mInstance == null) {
mInstance = new FloatWindowManager();
}
}
}
return mInstance;
}
public FloatWindowManager initManager(Context context) {
mContext = context;
mWindowManager = (WindowManager) mContext.getSystemService(Context.WINDOW_SERVICE);
showWindow();
return this;
}
public boolean requestPermission(Context context) {
return SettingsCompat.canDrawOverlays(context, true, false);
}
private synchronized void showWindow() {
textView = new TextView(mContext);
textView.setText("此为悬浮窗口View");
textView.setTextSize(TypedValue.COMPLEX_UNIT_PX, dp2px(mContext, 15));
mLayoutParams = new WindowManager.LayoutParams();
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
mLayoutParams.type = WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY;
} else {
mLayoutParams.type = WindowManager.LayoutParams.TYPE_SYSTEM_ALERT;
}
mLayoutParams.format = PixelFormat.RGBA_8888; //窗口透明
mLayoutParams.gravity = Gravity.LEFT | Gravity.TOP; //窗口位置
mLayoutParams.flags = WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL | WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE;
DisplayMetrics displayMetrics = mContext.getResources().getDisplayMetrics();
layoutY = displayMetrics.heightPixels / 2;
layoutX = displayMetrics.widthPixels - textView.getMeasuredWidth();
mLayoutParams.width = WindowManager.LayoutParams.WRAP_CONTENT;
mLayoutParams.height = WindowManager.LayoutParams.WRAP_CONTENT;
mLayoutParams.x = layoutX;
mLayoutParams.y = layoutY;
setListener();
}
public void showFloatWindow(){
mWindowManager.addView(textView, mLayoutParams);
}
private void setListener() {
if (textView != null) {
textView.setOnTouchListener(new View.OnTouchListener() {
private int moveX; //动画平移距离
int startX, startY; //起始点
boolean isMove; //是否在移动
long startTime;
int finalMoveX; //最后通过动画将mView的X轴坐标移动到finalMoveX
boolean downMove = false;
@Override
public boolean onTouch(View v, MotionEvent event) {
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
startX = (int) event.getX();
startY = (int) event.getY();
startTime = System.currentTimeMillis();
isMove = false;
downMove = false;
return false;
case MotionEvent.ACTION_MOVE:
//当移动距离大于2时候，刷新界面。
if (Math.abs(startX - event.getX()) > 2 || Math.abs(startY - event.getY()) > 2) {
downMove = true;
mLayoutParams.x = (int) (event.getRawX() - startX);
mLayoutParams.y = (int) (event.getRawY() - startY);
updateViewLayout(); //更新mView 的位置
}
return true;
case MotionEvent.ACTION_UP:
long curTime = System.currentTimeMillis();
isMove = curTime - startTime > 100;
if (isMove){
//判断mView是在Window中的位置，以中间为界
if (mLayoutParams.x + textView.getMeasuredWidth() / 2 >= mWindowManager.getDefaultDisplay().getWidth() / 2) {
finalMoveX = mWindowManager.getDefaultDisplay().getWidth() - textView.getMeasuredWidth();
} else {
finalMoveX = 0;
}
//使用动画移动mView
animator = ValueAnimator.ofInt(mLayoutParams.x, finalMoveX).setDuration(Math.abs(mLayoutParams.x - finalMoveX));
animator.addUpdateListener((ValueAnimator animation) -> {
if (animation != null) {
moveX = (int) animation.getAnimatedValue();
mLayoutParams.x = (int) animation.getAnimatedValue();
updateViewLayout();
}
});
animator.start();
}
return isMove;
}
return false;
}
});
}
}
private void updateViewLayout() {
if (null != textView && null != mLayoutParams && mWindowManager != null) {
try {
mWindowManager.updateViewLayout(textView, mLayoutParams);
} catch (Exception e) {
e.printStackTrace();
}
}
}
public static int dp2px(Context context, float dpValue) {
if (context != null) {
final float scale = context.getResources().getDisplayMetrics().density;
return (int) (dpValue * scale + 0.5f);
}
return (int) dpValue;
}2、SettingsCompat 动态权限判断（适配大部分厂商）
public class SettingsCompat {
private static final int OP_WRITE_SETTINGS = 23;
private static final int OP_SYSTEM_ALERT_WINDOW = 24;
public static boolean canDrawOverlays(Context context, boolean isShowDialog, boolean isShowPermission) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
if (!Settings.canDrawOverlays(context)) {
if (isShowDialog) {
//去授权
SettingsCompat.manageDrawOverlays(context);
} else if (isShowPermission) {
manageDrawOverlays(context);
}
return false;
}
return true;
} else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2) {
if (checkOp(context, OP_SYSTEM_ALERT_WINDOW)) {
return true;
} else {
if (isShowPermission)
startFloatWindowPermissionErrorToast(context);
return false;
}
} else {
return true;
}
}
public static void manageDrawOverlays(Context context) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
try {
Intent intent = new Intent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION);
intent.setData(Uri.parse("package:" + context.getPackageName()));
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(intent);
} catch (Exception e) {
e.printStackTrace();
startFloatWindowPermissionErrorToast(context);
}
} else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2) {
if (!manageDrawOverlaysForRom(context)) {
startFloatWindowPermissionErrorToast(context);
}
}
}
public static void startFloatWindowPermissionErrorToast(Context context) {
if (context != null)
Toast.makeText(context, "进入设置页面失败,请手动开启悬浮窗权限", Toast.LENGTH_SHORT).show();
}
private static boolean manageDrawOverlaysForRom(Context context) {
if (RomUtil.isMiui()) {
return manageDrawOverlaysForMiui(context);
}
if (RomUtil.isEmui()) {
return manageDrawOverlaysForEmui(context);
}
if (RomUtil.isFlyme()) {
return manageDrawOverlaysForFlyme(context);
}
if (RomUtil.isOppo()) {
return manageDrawOverlaysForOppo(context);
}
if (RomUtil.isVivo()) {
return manageDrawOverlaysForVivo(context);
}
if (RomUtil.isQiku()) {
return manageDrawOverlaysForQihu(context);
}
if (RomUtil.isSmartisan()) {
return manageDrawOverlaysForSmartisan(context);
}
return false;
}
private static boolean checkOp(Context context, int op) {
AppOpsManager manager = (AppOpsManager) context.getSystemService(Context.APP_OPS_SERVICE);
try {
Method method = AppOpsManager.class.getDeclaredMethod("checkOp", int.class, int.class, String.class);
return AppOpsManager.MODE_ALLOWED == (int) method.invoke(manager, op, Binder.getCallingUid(), context.getPackageName());
} catch (Exception e) {
}
return false;
}
// 可设置Android 4.3/4.4的授权状态
private static boolean setMode(Context context, int op, boolean allowed) {
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN_MR2 || Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
return false;
}
AppOpsManager manager = (AppOpsManager) context.getSystemService(Context.APP_OPS_SERVICE);
try {
Method method = AppOpsManager.class.getDeclaredMethod("setMode", int.class, int.class, String.class, int.class);
method.invoke(manager, op, Binder.getCallingUid(), context.getPackageName(), allowed ? AppOpsManager.MODE_ALLOWED : AppOpsManager.MODE_IGNORED);
return true;
} catch (Exception e) {
}
return false;
}
private static boolean startSafely(Context context, Intent intent) {
List<ResolveInfo> resolveInfos = null;
try {
resolveInfos = context.getPackageManager().queryIntentActivities(intent, PackageManager.MATCH_DEFAULT_ONLY);
if (resolveInfos != null && resolveInfos.size() > 0) {
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(intent);
return true;
}
} catch (Exception e) {
e.printStackTrace();
}
return false;
}
// 小米
private static boolean manageDrawOverlaysForMiui(Context context) {
Intent intent = new Intent("miui.intent.action.APP_PERM_EDITOR");
intent.putExtra("extra_pkgname", context.getPackageName());
intent.setClassName("com.miui.securitycenter", "com.miui.permcenter.permissions.AppPermissionsEditorActivity");
if (startSafely(context, intent)) {
return true;
}
intent.setClassName("com.miui.securitycenter", "com.miui.permcenter.permissions.PermissionsEditorActivity");
if (startSafely(context, intent)) {
return true;
}
// miui v5 的支持的android版本最高 4.x
// http://www.romzj.com/list/search?keyword=MIUI%20V5#search_result
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
Intent intent1 = new Intent(Settings.ACTION_APPLICATION_DETAILS_SETTINGS);
intent1.setData(Uri.fromParts("package", context.getPackageName(), null));
return startSafely(context, intent1);
}
return false;
}
private final static String HUAWEI_PACKAGE = "com.huawei.systemmanager";
// 华为
private static boolean manageDrawOverlaysForEmui(Context context) {
Intent intent = new Intent();
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
intent.setClassName(HUAWEI_PACKAGE, "com.huawei.systemmanager.addviewmonitor.AddViewMonitorActivity");
if (startSafely(context, intent)) {
return true;
}
}
// Huawei Honor P6|4.4.4|3.0
intent.setClassName(HUAWEI_PACKAGE, "com.huawei.notificationmanager.ui.NotificationManagmentActivity");
intent.putExtra("showTabsNumber", 1);
if (startSafely(context, intent)) {
return true;
}
intent.setClassName(HUAWEI_PACKAGE, "com.huawei.permissionmanager.ui.MainActivity");
if (startSafely(context, intent)) {
return true;
}
return false;
}
// VIVO
private static boolean manageDrawOverlaysForVivo(Context context) {
// 不支持直接到达悬浮窗设置页，只能到 i管家 首页
Intent intent = new Intent("com.iqoo.secure");
intent.setClassName("com.iqoo.secure", "com.iqoo.secure.MainActivity");
// com.iqoo.secure.ui.phoneoptimize.SoftwareManagerActivity
// com.iqoo.secure.ui.phoneoptimize.FloatWindowManager
return startSafely(context, intent);
}
// OPPO
private static boolean manageDrawOverlaysForOppo(Context context) {
Intent intent = new Intent();
intent.putExtra("packageName", context.getPackageName());
// OPPO A53|5.1.1|2.1
intent.setAction("com.oppo.safe");
intent.setClassName("com.oppo.safe", "com.oppo.safe.permission.floatwindow.FloatWindowListActivity");
if (startSafely(context, intent)) {
return true;
}
// OPPO R7s|4.4.4|2.1
intent.setAction("com.color.safecenter");
intent.setClassName("com.color.safecenter", "com.color.safecenter.permission.floatwindow.FloatWindowListActivity");
if (startSafely(context, intent)) {
return true;
}
intent.setAction("com.coloros.safecenter");
intent.setClassName("com.coloros.safecenter", "com.coloros.safecenter.sysfloatwindow.FloatWindowListActivity");
return startSafely(context, intent);
}
// 魅族
private static boolean manageDrawOverlaysForFlyme(Context context) {
Intent intent = new Intent("com.meizu.safe.security.SHOW_APPSEC");
intent.setClassName("com.meizu.safe", "com.meizu.safe.security.AppSecActivity");
intent.putExtra("packageName", context.getPackageName());
return startSafely(context, intent);
}
// 360
private static boolean manageDrawOverlaysForQihu(Context context) {
Intent intent = new Intent();
intent.setClassName("com.android.settings", "com.android.settings.Settings$OverlaySettingsActivity");
if (startSafely(context, intent)) {
return true;
}
intent.setClassName("com.qihoo360.mobilesafe", "com.qihoo360.mobilesafe.ui.index.AppEnterActivity");
return startSafely(context, intent);
}
// 锤子
private static boolean manageDrawOverlaysForSmartisan(Context context) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
return false;
}
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
// 锤子 坚果|5.1.1|2.5.3
Intent intent = new Intent("com.smartisanos.security.action.SWITCHED_PERMISSIONS_NEW");
intent.setClassName("com.smartisanos.security", "com.smartisanos.security.SwitchedPermissions");
intent.putExtra("index", 17); // 不同版本会不一样
return startSafely(context, intent);
} else {
// 锤子 坚果|4.4.4|2.1.2
Intent intent = new Intent("com.smartisanos.security.action.SWITCHED_PERMISSIONS");
intent.setClassName("com.smartisanos.security", "com.smartisanos.security.SwitchedPermissions");
intent.putExtra("permission", new String[]{Manifest.permission.SYSTEM_ALERT_WINDOW});
// Intent intent = new Intent("com.smartisanos.security.action.MAIN");
// intent.setClassName("com.smartisanos.security", "com.smartisanos.security.MainActivity");
return startSafely(context, intent);
}
}
}3、厂商 RomUtil
public class RomUtil {
private static final String TAG = "RomUtil";
public static final String ROM_MIUI = "MIUI";
public static final String ROM_EMUI = "EMUI";
public static final String ROM_FLYME = "FLYME";
public static final String ROM_OPPO = "OPPO";
public static final String ROM_SMARTISAN = "SMARTISAN";
public static final String ROM_VIVO = "VIVO";
public static final String ROM_QIKU = "QIKU";
public static final String ROM_LENOVO = "LENOVO";
public static final String ROM_SAMSUNG = "SAMSUNG";
private static final String KEY_VERSION_MIUI = "ro.miui.ui.version.name";
private static final String KEY_VERSION_EMUI = "ro.build.version.emui";
private static final String KEY_VERSION_OPPO = "ro.build.version.opporom";
private static final String KEY_VERSION_SMARTISAN = "ro.smartisan.version";
private static final String KEY_VERSION_VIVO = "ro.vivo.os.version";
private static final String KEY_VERSION_GIONEE = "ro.gn.sv.version";
private static final String KEY_VERSION_LENOVO = "ro.lenovo.lvp.version";
private static final String KEY_VERSION_FLYME = "ro.build.display.id";
private static final String KEY_EMUI_VERSION_CODE = "ro.build.hw_emui_api_level";
private static final String KEY_MIUI_VERSION_CODE = "ro.miui.ui.version.code";
private static final String KEY_MIUI_HANDY_MODE_SF = "ro.miui.has_handy_mode_sf";
private static final String KEY_MIUI_REAL_BLUR = "ro.miui.has_real_blur";
private static final String KEY_FLYME_PUBLISHED = "ro.flyme.published";
private static final String KEY_FLYME_FLYME = "ro.meizu.setupwizard.flyme";
private static final String KEY_FLYME_ICON_FALG = "persist.sys.use.flyme.icon";
private static final String KEY_FLYME_SETUP_FALG = "ro.meizu.setupwizard.flyme";
private static final String KEY_FLYME_PUBLISH_FALG = "ro.flyme.published";
private static final String KEY_VIVO_OS_NAME = "ro.vivo.os.name";
private static final String KEY_VIVO_OS_VERSION = "ro.vivo.os.version";
private static final String KEY_VIVO_ROM_VERSION = "ro.vivo.rom.version";
public static boolean isEmui() {
return check(ROM_EMUI);
}
public static boolean isMiui() {
return check(ROM_MIUI);
}
public static boolean isVivo() {
return check(ROM_VIVO);
}
public static boolean isOppo() {
return check(ROM_OPPO);
}
public static boolean isFlyme() {
return check(ROM_FLYME);
}
public static boolean isQiku() {
return check(ROM_QIKU) || check("360");
}
public static boolean isSmartisan() {
return check(ROM_SMARTISAN);
}
private static String sName;
public static String getName() {
if (sName == null) {
check("");
}
return sName;
}
private static String sVersion;
public static String getVersion() {
if (sVersion == null) {
check("");
}
return sVersion;
}
public static boolean check(String rom) {
if (sName != null) {
return sName.equals(rom);
}
if (!TextUtils.isEmpty(sVersion = getProp(KEY_VERSION_MIUI))) {
sName = ROM_MIUI;
} else if (!TextUtils.isEmpty(sVersion = getProp(KEY_VERSION_EMUI))) {
sName = ROM_EMUI;
} else if (!TextUtils.isEmpty(sVersion = getProp(KEY_VERSION_OPPO))) {
sName = ROM_OPPO;
} else if (!TextUtils.isEmpty(sVersion = getProp(KEY_VERSION_VIVO))) {
sName = ROM_VIVO;
} else if (!TextUtils.isEmpty(sVersion = getProp(KEY_VERSION_SMARTISAN))) {
sName = ROM_SMARTISAN;
} else {
sVersion = Build.DISPLAY;
if (sVersion.toUpperCase().contains(ROM_FLYME)) {
sName = ROM_FLYME;
} else {
sVersion = Build.UNKNOWN;
sName = Build.MANUFACTURER.toUpperCase();
}
}
return sName.equals(rom);
}
public static String getProp(String name) {
String line = null;
BufferedReader input = null;
try {
Process p = Runtime.getRuntime().exec("getprop " + name);
input = new BufferedReader(new InputStreamReader(p.getInputStream()), 1024);
line = input.readLine();
input.close();
} catch (IOException ex) {
Log.e(TAG, "Unable to read prop " + name, ex);
return null;
} finally {
if (input != null) {
try {
input.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
return line;
}
}以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持编程网。
