Question

我想为marshmallow添加运行时权限，因为它会在Android marshmallow设备中崩溃我的应用程序，否则它会正常工作。是否可以一次添加多个权限？我已经为相机许可编写了代码，但是

我已经编写了单一权限的代码，但工作正常。

private  void  requestpermissioncamera()
{
final List<String> permissionsList = new ArrayList<String>();
if (!addPermission(permissionsList, Manifest.permission.ACCESS_FINE_CAMERA)) permissionsNeeded.add("Camera");
requestPermissions(permissionsList.toArray(new String[permissionsList.size()]),PERMISSION_REQUEST_CODE);
return;
}

此功能用于检查是否授予天气许可。

private boolean checkPermission(){
int result = ContextCompat.checkSelfPermission(context, Manifest.permission.CAMERA);
if (result == PackageManager.PERMISSION_GRANTED){
return true;
} else {
return false;
}
}

Answer 1

当然是。您可以在下面看到它如何实现的示例：

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


public boolean verifyStoragePermissions(Activity activity, int REQUEST_EXTERNAL_STORAGE) {

    initialize(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);
      return false;
    } else {
      return true;
    }
  }

Answer 2

对于我的项目，我用这种方法制作了Utils类：

public static boolean checkAllAndRequestPermisions(Activity activity, int requestCode, LinkedList<String> permissionsList) {
       LinkedList<String> needPermissions = new LinkedList<>();
        for(String permission : permissionsList){
           if (ContextCompat.checkSelfPermission(activity, permission) != activity.getPackageManager().PERMISSION_GRANTED){
               needPermissions.add(permission);
           }
        }
        if (!needPermissions.isEmpty()){
                ActivityCompat.requestPermissions(activity, needPermissions.toArray(new String[needPermissions.size()]), requestCode);
        }
            return true;
    }

并实现onRequestPermissinsResult接口，如下所示：

@Override
    public void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults) {
        switch (requestCode) {
            case Consts.SOME_PERMISSIONS_REQUEST_CODE: {
                // If request is cancelled, the result arrays are empty.
                if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {

                } else {
                    Toast.makeText(getApplicationContext(), "Need permissions", Toast.LENGTH_LONG).show();
                }
                return;
            }
            // other 'case' lines to check for other
            // permissions this app might request
        }
    }

它不是完美的解决方案，但第一次没问题，我希望能有所帮助。

另外不要忘记，你可以设置gradle targetSdkVersion少于23，以便有时间实现所有请求权限功能。

Answer 3

一次性获取多个权限很容易。

我希望下面的代码可以帮助您授予多个权限。

private  void  requestpermissioncamera()
{
    List<String> permissionsNeeded = new ArrayList<String>();

    final List<String> permissionsList = new ArrayList<String>();
    if (!addPermission(permissionsList, Manifest.permission.ACCESS_FINE_LOCATION))
permissionsNeeded.add("GPS");
    if (!addPermission(permissionsList, Manifest.permission.READ_CONTACTS))
permissionsNeeded.add("Read Contacts");
    if (!addPermission(permissionsList, Manifest.permission.WRITE_CONTACTS))
permissionsNeeded.add("Write Contacts");
    if(!addPermission(permissionsList,Manifest.permission.CAMERA))
permissionsNeeded.add("Camera");
    if(!addPermission(permissionsList, Manifest.permission.ACCESS_NOTIFICATION_POLICY))
permissionsNeeded.add("push Notification");

    if (permissionsList.size() > 0) {
        if (permissionsNeeded.size() > 0) {
        // Need Rationale
        String message = "You need to grant access to " + permissionsNeeded.get(0);
        for (int i = 1; i < permissionsNeeded.size(); i++)
        message = message + ", " + permissionsNeeded.get(i);
        showMessageOKCancel(message,new DialogInterface.OnClickListener() {
           @Override
           public void onClick(DialogInterface dialog, int which) {
               requestPermissions(permissionsList.toArray(new String[permissionsList.size()]), REQUEST_CODE_ASK_MULTIPLE_PERMISSIONS);
                    }
                });
           return;
      }
      requestPermissions(permissionsList.toArray(new String[permissionsList.size()]),REQUEST_CODE_ASK_MULTIPLE_PERMISSIONS);
      return;
}
@Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
    switch (requestCode) {
    case REQUEST_CODE_ASK_MULTIPLE_PERMISSIONS:
    {
    Map<String, Integer> perms = new HashMap<String, Integer>();
    // Initial
    perms.put(Manifest.permission.ACCESS_FINE_LOCATION, PackageManager.PERMISSION_GRANTED);
    perms.put(Manifest.permission.READ_CONTACTS, PackageManager.PERMISSION_GRANTED);
    perms.put(Manifest.permission.WRITE_CONTACTS, PackageManager.PERMISSION_GRANTED);
    perms.put(Manifest.permission.CAMERA, PackageManager.PERMISSION_GRANTED);
    perms.put(Manifest.permission.ACCESS_NOTIFICATION_POLICY, PackageManager.PERMISSION_GRANTED);

    // Fill with results
    for (int i = 0; i < permissions.length; i++)
        perms.put(permissions[i], grantResults[i]);
    // Check for ACCESS_FINE_LOCATION
    if (perms.get(Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED && perms.get(Manifest.permission.READ_CONTACTS) == PackageManager.PERMISSION_GRANTED && perms.get(Manifest.permission.WRITE_CONTACTS) == PackageManager.PERMISSION_GRANTED) 
    {
    // All Permissions Granted
    //    insertDummyContact();
    } else {
    // Permission Denied
    Toast.makeText(MainActivity.this, "Some Permission is Denied", Toast.LENGTH_SHORT)
    .show();
    }
    }
    break;
    default:
    super.onRequestPermissionsResult(requestCode, permissions, grantResults);
}

仅针对Android Marshmallow请求运行时权限？

3 个答案: