今天发现郭的华为手机无法读写sd卡，找到了这个方法

最新推荐文章于 2024-06-15 11:23:10 发布

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最新推荐文章于 2024-06-15 11:23:10 发布

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文章标签：移动开发 java

原文链接：http://www.cnblogs.com/strongdady/p/9087887.html

本文介绍在华为P9手机(Android 6.0)上如何正确实现外部存储权限管理。不仅需要在AndroidManifest.xml文件中声明权限，还需在Java代码中进行运行时权限请求。

https://bbs.youkuaiyun.com/topics/391985867?page=1

华为P9是android 6.0 的==
在API23+以上也就是安卓6.0以上的，进行了权限管理
不止要在AndroidManifest.xml里面添加权限
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
还要在JAVA代码中运行时实时请求权限：
// Storage Permissions
private static final int REQUEST_EXTERNAL_STORAGE = 1;
private static String[] PERMISSIONS_STORAGE = {
Manifest.permission.READ_EXTERNAL_STORAGE,
Manifest.permission.WRITE_EXTERNAL_STORAGE };
/**
* Checks if the app has permission to write to device storage
* If the app does not has permission then the user will be prompted to
* grant permissions
* @param activity
*/
public static void verifyStoragePermissions(Activity activity) {
// Check if we have write permission
int permission = ActivityCompat.checkSelfPermission(activity,
Manifest.permission.WRITE_EXTERNAL_STORAGE);

if (permission != PackageManager.PERMISSION_GRANTED) {
// We don't have permission so prompt the user
ActivityCompat.requestPermissions(activity, PERMISSIONS_STORAGE,
REQUEST_EXTERNAL_STORAGE);
}
}