android 12 SD动态申请读写权限

柔光的暖阳◎ 2024-03-23 16:23 46阅读 0赞

### android 12 如何动态申请读写权限 ###

> android 12不仅需要在AndroidManifest.xml申请读写权限也需要在代码中动态的申请 关于如何动态申请读写权限仅需要两步

1.  在AndroidManifest.xml文件中申请读写权限

<uses-permission android:name="android.permission.MANAGE_EXTERNAL_STORAGE"
            tools:ignore="ScopedStorage" />
        <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
        <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

1.  在代码的启动MainActivity中动态申请方法

private static final int REQUEST_EXTERNAL_STORAGE = 1;
        private final static String[] PERMISSIONS_STORAGE = {
        
                Manifest.permission.READ_EXTERNAL_STORAGE,
                Manifest.permission.WRITE_EXTERNAL_STORAGE,};
    
     public void verifyStoragePermissions(Activity activity) {
        
    
            try {
        
                //检测是否有写的权限
                int permission = ActivityCompat.checkSelfPermission(activity,
                        "android.permission.WRITE_EXTERNAL_STORAGE");
                if (permission != PackageManager.PERMISSION_GRANTED) {
        
                    // 没有写的权限，去申请写的权限，会弹出对话框
                    ActivityCompat.requestPermissions(this, PERMISSIONS_STORAGE, REQUEST_EXTERNAL_STORAGE);
                }
            } catch (Exception e) {
        
                e.printStackTrace();
            }
    
        }

下面是关于动态权限申请的Manifest.class类大家有兴趣可以去了解下  
![在这里插入图片描述][a36b40d138d14fa8acca63f97004f002.png_pic_center]

[a36b40d138d14fa8acca63f97004f002.png_pic_center]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/23/b66ce71498004058bdec907152ef4719.png