Android 小米、Vivo、Oppo后台弹出界面权限检测背景问题原因检测方法小米：Vivo：判断当前手机厂商：完整代码：
小米、Vivo、Oppo后台弹出界面权限检测
记录一个开发中遇到App退到后台startActivity无法跳转问题
背景公司App需求，从App切到第三方App时，需要在最顶层展示一个“返回”按钮，点击后一键切换回自己App~
然后用WindowManager撸了一个悬浮框，点击悬浮框时startActivity，华为手机一切正常。
测了一台小米手机才发现，startActivity调用了不生效并不会跳转~但我确信不是代码问题，肯定是cqdxbw又做了什么定制
问题原因度娘了一下才知道，原来小米、vivo等厂商为了不让后台应用乱弹广告，增加了一项“后台弹出界面”的权限，默认是禁止的，小米手机可见：小米关于默认关闭“后台弹出页面”权限的通知
不得不说出发点是好的，但并没有提供代码申请此权限，甚至连授权权限的页面都各不一样，设置里找半天才能找到这个块设置
由于我们小团队小项目，也没资格找厂商谈判默认打开，所以只能通过提示引导用户去手动打开~
但又不能一股脑的就喊用户去设置，有些手机是不需要这个权限的，至少得判断当前是否有这个权限，没权限的时候再喊用户去设置，这就合理多了，然后又开始了一轮度娘~
检测方法直接上代码
小米： private fun isXiaomiBgStartPermissionAllowed(context: Context): Boolean { val ops = context.getSystemService(Context.APP_OPS_SERVICE) as AppOpsManager try { val op = 10021 val method: Method = ops.javaClass.getMethod("checkOpNoThrow", Int::class.javaPrimitiveType, Int::class.javaPrimitiveType, String::class.java) val result = method.invoke(ops, op, android.os.Process.myUid(), context.packageName) as Int return result == AppOpsManager.MODE_ALLOWED } catch (e: Exception) { e.printStackTrace() } return false } Vivo： private fun isVivoBgStartPermissionAllowed(context: Context): Boolean { return getVivoBgStartPermissionStatus(context) == 0 } /** * 判断Vivo后台弹出界面状态， 1无权限，0有权限 * @param context context */ private fun getVivoBgStartPermissionStatus(context: Context): Int { val uri: Uri = Uri.parse("content://com.vivo.permissionmanager.provider.permission/start_bg_activity") val selection = "pkgname = ?" val selectionArgs = arrayOf(context.packageName) var state = 1 try { context.contentResolver.query(uri, null, selection, selectionArgs, null)?.use { if (it.moveToFirst()) { state = it.getInt(it.getColumnIndex("currentstate")) } } } catch (e: Exception) { e.printStackTrace() } return state } 判断当前手机厂商： fun isXiaoMi(): Boolean { return checkManufacturer("xiaomi") } fun isOppo(): Boolean { return checkManufacturer("oppo") } fun isVivo(): Boolean { return checkManufacturer("vivo") } private fun checkManufacturer(manufacturer: String): Boolean { return manufacturer.equals(Build.MANUFACTURER, true) } 完整代码： object RomUtils { private val TAG = RomUtils::class.java.simpleName fun isXiaoMi(): Boolean { return checkManufacturer("xiaomi") } fun isOppo(): Boolean { return checkManufacturer("oppo") } fun isVivo(): Boolean { return checkManufacturer("vivo") } private fun checkManufacturer(manufacturer: String): Boolean { return manufacturer.equals(Build.MANUFACTURER, true) } fun isBackgroundStartAllowed(context: Context): Boolean { if (isXiaoMi()) { return isXiaomiBgStartPermissionAllowed(context) } if (isVivo()) { return isVivoBgStartPermissionAllowed(context) } if (isOppo() && Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) { return Settings.canDrawOverlays(context) } return true } private fun isXiaomiBgStartPermissionAllowed(context: Context): Boolean { val ops = context.getSystemService(Context.APP_OPS_SERVICE) as AppOpsManager try { val op = 10021 val method: Method = ops.javaClass.getMethod("checkOpNoThrow", Int::class.javaPrimitiveType, Int::class.javaPrimitiveType, String::class.java) val result = method.invoke(ops, op, android.os.Process.myUid(), context.packageName) as Int return result == AppOpsManager.MODE_ALLOWED } catch (e: Exception) { e.printStackTrace() } return false } private fun isVivoBgStartPermissionAllowed(context: Context): Boolean { return getVivoBgStartPermissionStatus(context) == 0 } /** * 判断Vivo后台弹出界面状态， 1无权限，0有权限 * @param context context */ private fun getVivoBgStartPermissionStatus(context: Context): Int { val uri: Uri = Uri.parse("content://com.vivo.permissionmanager.provider.permission/start_bg_activity") val selection = "pkgname = ?" val selectionArgs = arrayOf(context.packageName) var state = 1 try { context.contentResolver.query(uri, null, selection, selectionArgs, null)?.use { if (it.moveToFirst()) { state = it.getInt(it.getColumnIndex("currentstate")) } } } catch (e: Exception) { e.printStackTrace() } return state }}