android 权限检查工具类,封装权限工具类PermissionUtil

public class PermissionUtil {

public static int REQUEST_CODE = 22;

public static String[] PERMISSIONS_STORAGE = {Manifest.permission.READ_EXTERNAL_STORAGE, Manifest.permission.WRITE_EXTERNAL_STORAGE};

/**

* 检查单个权限

*/

@RequiresApi(api = Build.VERSION_CODES.M)

public static boolean checkPermission(Context context, @NonNull String permission) {

ListnoPermission = new ArrayList<>();

// 检查该权限是否已经获取

int i = ContextCompat.checkSelfPermission(context, permission);

// 权限是否已经 授权 GRANTED---授权 DINIED---拒绝

if (i == PackageManager.PERMISSION_GRANTED) {

return true;

}

return false;

}

/**

* 检查多权限

*/

@RequiresApi(api = Build.VERSION_CODES.M)

public static String[] checkPermission(Context context, @NonNull String... permissions) {

ListnoPermission = new ArrayList<>();

for (String permission : permissions) {

// 检查该权限是否已经获取

if (!checkPermission(context, permission)) {

noPermission.add(permission);

}

}

String[] result = new String[noPermission.size()];

return noPermission.toArray(result);

}

/**

* 动态申请权限

*/

@RequiresApi(api = Build.VERSION_CODES.M)

public static void requestPermission(Activity context, String... permissions) {

if (permissions.length > 0) {

context.requestPermissions(permissions, REQUEST_CODE);

}

}

/**

* 动态申请权限

*/

@RequiresApi(api = Build.VERSION_CODES.M)

public static void checkAndRequestPermissions(Activity context, String... permissions) {

requestPermission(context, permissions);

}

}

public class StartActivity extends AppCompatActivity {

@Override

protected void onCreate(@Nullable Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

if (Build.VERSION.SDK_INT >= 23 && PermissionUtil.checkPermission(this, PermissionUtil.PERMISSIONS_STORAGE).length > 0) {

PermissionUtil.checkAndRequestPermissions(this, PermissionUtil.PERMISSIONS_STORAGE);

} else {

intentToMainActivity();

}

}

@Override

public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {

super.onRequestPermissionsResult(requestCode, permissions, grantResults);

boolean hasPermissionDenin = false;

if (requestCode == PermissionUtil.REQUEST_CODE) {

for (int i = 0; i < grantResults.length; i++) {

if (grantResults[i] == -1) {

hasPermissionDenin = true;

break;

}

}

if (hasPermissionDenin) {

Toast.makeText(this, StringUtil.getString(this, R.string.deny_permissions_warning), Toast.LENGTH_LONG).show();

}

intentToMainActivity();

}

}

private void intentToMainActivity() {

Intent intent = new Intent(this, MainActivity.class);

startActivity(intent);

this.finish();

}

}