Android 6.0权限问题

时间:2022-06-28 06:49:18
Android 6.0 open failed: EACCES (Permission denied)

对于6.0+权限问题,报错如上:

解决方案:

Android 6.0 (Marshmallow). 添加新的权限模型,需要在运行时动态获取所需要的权限。

首先判断手机系统版本是否在6.0+然后才是支持运行时动态获取权限:

private boolean canMakeSmores(){

    return(Build.VERSION.SDK_INT>Build.VERSION_CODES.LOLLIPOP_MR1);

}

然后是运行时获取权限的操作:

String[] perms = {"android.permission.RECORD_AUDIO", "android.permission.CAMERA"};

int permsRequestCode = ; 

requestPermissions(perms, permsRequestCode);

requestPermissions这个方法是Activity的方法,然后在onRequestPermissionResult里面拿到权限授予的回调结果:

@Override

public void onRequestPermissionsResult(int permsRequestCode, String[] permissions, int[] grantResults){

    switch(permsRequestCode){

        case :

            boolean audioAccepted = grantResults[]==PackageManager.PERMISSION_GRANTED;

            boolean cameraAccepted = grantResults[]==PackageManager.PERMISSION_GRANTED;

            break;

    }

}

下面这个方法可以获取用户是不是已经授予某些特殊的权限:

private boolean hasPermission(String permission){

    if(canMakeSmores()){

        return(checkSelfPermission(permission)==PackageManager.PERMISSION_GRANTED);

    }

    return true;

}

如果用户已经授权过了这些权限,系统不会记住的,需要我们自己记住这些。

private boolean shouldWeAsk(String permission){

    return (sharedPreferences.getBoolean(permission, true));

}

private void markAsAsked(String permission){

    sharedPreferences.edit().putBoolean(permission, false).apply;

}

同一个页面,可能多次需要某些权限,切记不要重复让用户授权

private ArrayList findUnAskedPermissions(ArrayList wanted){

    ArrayList result = new ArrayList<~>();

    for(String perm : wanted){

        if(!hasPermission(perm) && shouldWeAsk(perm)){

            result.add(perm);

        }

    }

    return result;

}

转自:http://www.captechconsulting.com/blogs/runtime-permissions-best-practices-and-how-to-gracefully-handle-permission-removal