googlesamples之easypermissions使用
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使用
1. app/build.gradle
dependencies { compile 'pub.devrel:easypermissions:0.3.0'}
2. 在Activity / Fragment实现PermissionCallbacks,回调方法:
@Overridepublic void onPermissionsGranted(int requestCode, List<String> list) { // Some permissions have been granted // ... LogUtil.d("Some permissions have been granted=" + requestCode);}@Overridepublic void onPermissionsDenied(int requestCode, List<String> list) { // Some permissions have been denied // ... LogUtil.d("Some permissions have been denied=" + requestCode);}
3. 在需要使用到权限之前调用methodRequiresTwoPermission方法,如相机和发送短信:
@AfterPermissionGranted(1010)private void methodRequiresTwoPermission() { String[] perms = {Manifest.permission.CAMERA, SEND_SMS}; if (EasyPermissions.hasPermissions(this, perms)) { // Already have permission, do the thing // ... LogUtil.d("Already have permission, do the thing"); } else { // Do not have permissions, request them now LogUtil.d("Do not have permissions, request them now"); EasyPermissions.requestPermissions(this, "camera_and_send_sms", 1010, perms); }}
4. 还是要授权回调:
@Overridepublic void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) { super.onRequestPermissionsResult(requestCode, permissions, grantResults); // Forward results to EasyPermissions EasyPermissions.onRequestPermissionsResult(requestCode, permissions, grantResults, this);}
这样就over了。
源码地址
https://github.com/googlesamples/easypermissions ,点击底部「阅读原文」直达。
一点思考
就在《Android 6.0 RuntimePermission》文章里,我对Android 6.0 运行权限做了个简单封装,但没有考虑到Fragment使用和勾上不再询问应该去setting,还一个问题,封装只是针对单个权限,推荐官方easypermissions库,来看看easypermissions是如何解决我未考虑的问题。
Fragment使用
直接提供了Fragment可以调用的方法:
@SuppressLint("NewApi")public static void requestPermissions(@NonNull Fragment fragment, @NonNull String rationale, @StringRes int positiveButton, @StringRes int negativeButton, int requestCode, @NonNull String... perms) { if (hasPermissions(fragment.getContext(), perms)) { notifyAlreadyHasPermissions(fragment, requestCode, perms); return; } if (shouldShowRationale(fragment, perms)) { RationaleDialogFragmentCompat .newInstance(positiveButton, negativeButton, rationale, requestCode, perms) .show(fragment.getChildFragmentManager(), DIALOG_TAG); } else { fragment.requestPermissions(perms, requestCode); }}
不再询问去setting
我在《Android 6.0 RuntimePermission》说当勾上“不再询问”,只能选择拒绝,再次进入,shouldShowRequestPermissionRationale方法始终false,当onPermissionsDenied方法回调时,肯定是都是拒绝,再根据shouldShowRequestPermissionRationale方法不就知道是否勾上了“不再询问”,我咋没有想到这点呢:
@Overridepublic void onPermissionsDenied(int requestCode, List<String> perms) { Log.d(TAG, "onPermissionsDenied:" + requestCode + ":" + perms.size()); // (Optional) Check whether the user denied any permissions and checked "NEVER ASK AGAIN." // This will display a dialog directing them to enable the permission in app settings. if (EasyPermissions.somePermissionPermanentlyDenied(this, perms)) { new AppSettingsDialog.Builder(this).build().show(); }}@Overridepublic void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); if (requestCode == AppSettingsDialog.DEFAULT_SETTINGS_REQ_CODE) { // Do something after user returned from app settings screen, like showing a Toast. Toast.makeText(this, R.string.returned_from_app_settings_to_activity, Toast.LENGTH_SHORT) .show(); }}
EasyPermissions的somePermissionPermanentlyDenied方法,就是根据shouldShowRequestPermissionRationale方法判断是否勾上了“不再询问”。
public static boolean somePermissionPermanentlyDenied(@NonNull Activity activity, @NonNull List<String> deniedPermissions) { for (String deniedPermission : deniedPermissions) { if (permissionPermanentlyDenied(activity, deniedPermission)) { return true; } } return false;}public static boolean permissionPermanentlyDenied(@NonNull Activity activity, @NonNull String deniedPermission) { return !shouldShowRequestPermissionRationale(activity, deniedPermission);}
跳转setting代码:
Intent intent = new Intent(Settings.ACTION_APPLICATION_DETAILS_SETTINGS);Uri uri = Uri.fromParts("package", mContext.getPackageName(), null);intent.setData(uri);// Start for result//noinspection NewApi The Builder constructor prevents thisstartForResult(intent);
封装只针对单个权限
我应该封装多个权限,多权限是个数组,如果只有一个元素,不就是单个权限嘛!
转自:http://mp.weixin.qq.com/s/RKFP6rAfWuNcaATzxDmFlQ
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