这段代码对我有效。您需要这两个类：
MIUIUtils.java 和
BuildProperties.java。
MIUIUtils.java
public class MIUIUtils {
private static final String MIUI_V5 = "V5";
private static final String MIUI_V6 = "V6";
private static final String KEY_MIUI_VERSION_CODE = "ro.miui.ui.version.code";
private static final String KEY_MIUI_VERSION_NAME = "ro.miui.ui.version.name";
private static final String KEY_MIUI_INTERNAL_STORAGE = "ro.miui.internal.storage";
public static boolean isMIUI() {
try {
final BuildProperties prop = BuildProperties.newInstance();
return prop.getProperty(KEY_MIUI_VERSION_CODE, null) != null
|| prop.getProperty(KEY_MIUI_VERSION_NAME, null) != null
|| prop.getProperty(KEY_MIUI_INTERNAL_STORAGE, null) != null;
} catch (IOException e) {
return false;
}
}
public static boolean isMIUIV5() {
return getVersionName().equals(MIUI_V5);
}
public static boolean isMIUIV6() {
return getVersionName().equals(MIUI_V6);
}
public static String getVersionName() {
try {
final BuildProperties prop = BuildProperties.newInstance();
return prop.getProperty(KEY_MIUI_VERSION_NAME);
} catch (IOException e) {
return "";
}
}
public static boolean isFloatWindowOptionAllowed(Context context) {
AppOpsManager manager = (AppOpsManager) context.getSystemService(Context.APP_OPS_SERVICE);
Class localClass = manager.getClass();
Class[] arrayOfClass = new Class[3];
arrayOfClass[0] = Integer.TYPE;
arrayOfClass[1] = Integer.TYPE;
arrayOfClass[2] = String.class;
try {
Method method = localClass.getMethod("checkOp", arrayOfClass);
if (method == null) {
return false;
}
Object[] arrayOfObjects = new Object[3];
arrayOfObjects[0] = Integer.valueOf(24);
arrayOfObjects[1] = Integer.valueOf(Binder.getCallingUid());
arrayOfObjects[2] = context.getPackageName();
int m = ((Integer) method.invoke((Object) manager, arrayOfObjects)).intValue();
return m == AppOpsManager.MODE_ALLOWED;
} catch (Exception e) {
return false;
}
}
public static Intent toPermissionManager(Context context, String packageName) {
Intent intent = new Intent("miui.intent.action.APP_PERM_EDITOR");
String version = getVersionName();
if (MIUI_V5.equals(version)) {
PackageInfo pInfo;
try {
pInfo = context.getPackageManager().getPackageInfo(packageName, 0);
} catch (PackageManager.NameNotFoundException ignored) {
return null;
}
intent.setClassName("com.android.settings", "com.miui.securitycenter.permission.AppPermissionsEditor");
intent.putExtra("extra_package_uid", pInfo.applicationInfo.uid);
} else {
final String PKG_SECURITY_CENTER = "com.miui.securitycenter";
try {
context.getPackageManager().getPackageInfo(PKG_SECURITY_CENTER, PackageManager.GET_ACTIVITIES);
} catch (PackageManager.NameNotFoundException ignored) {
return null;
}
intent.setClassName(PKG_SECURITY_CENTER, "com.miui.permcenter.permissions.AppPermissionsEditorActivity");
intent.putExtra("extra_pkgname", packageName);
}
return intent;
}
public static Intent toFloatWindowPermission(Context context, String packageName) {
Uri packageUri = Uri.parse("package:" + packageName);
Intent detailsIntent = new Intent(Settings.ACTION_APPLICATION_DETAILS_SETTINGS, packageUri);
detailsIntent.addCategory(Intent.CATEGORY_DEFAULT);
if (isMIUIV5()) {
return detailsIntent;
} else {
Intent permIntent = toPermissionManager(context, packageName);
return permIntent == null ? detailsIntent : permIntent;
}
}
}
BuildProperties.java
public class BuildProperties {
private final Properties properties;
private BuildProperties() throws IOException {
InputStream in = new FileInputStream(new File(Environment.getRootDirectory(), "build.prop"));
properties = new Properties();
properties.load(in);
in.close();
}
public static BuildProperties newInstance() throws IOException {
return new BuildProperties();
}
public boolean containsKey(final Object key) {
return properties.containsKey(key);
}
public boolean containsValue(final Object value) {
return properties.containsValue(value);
}
public Set<Map.Entry<Object, Object>> entrySet() {
return properties.entrySet();
}
public String getProperty(final String name) {
return properties.getProperty(name);
}
public String getProperty(final String name, final String defaultValue) {
return properties.getProperty(name, defaultValue);
}
public boolean isEmpty() {
return properties.isEmpty();
}
public Enumeration<Object> keys() {
return properties.keys();
}
public Set<Object> keySet() {
return properties.keySet();
}
public int size() {
return properties.size();
}
public Collection<Object> values() {
return properties.values();
}
}
请按照以下方式调用您的代码：
if (Build.VERSION.SDK_INT >= 19 && MIUIUtils.isMIUI() && !MIUIUtils.isFloatWindowOptionAllowed(context)) {
Log.i(TAG, "MIUI DEVICE: Screen Overlay Not allowed");
startActivityForResult(MIUIUtils.toFloatWindowPermission(context, getPackageName()), REQUEST_OVERLAY_PERMISSION);
} else if (Build.VERSION.SDK_INT >= 23 && !Settings.canDrawOverlays(context)) {
Log.i(TAG, "SDK_INT > 23: Screen Overlay Not allowed");
startActivityForResult(new Intent(
"android.settings.action.MANAGE_OVERLAY_PERMISSION",
Uri.parse("package:" +getPackageName()))
, REQUEST_OVERLAY_PERMISSION
);
} else {
Log.i(TAG, "SKK_INT < 19 or Have overlay permission");
}
