android studio 6.0以上动态申请权限的代码

下午用小米真机调试时发现权限明明已经在AndroidManifest.xml中添加过了，但还是没有申请到应该有的权限，解决办法是下面的代码

//读写权限 具体权限加在字符串里面    private static String[] PERMISSIONS_STORAGE = {            Manifest.permission.READ_EXTERNAL_STORAGE,            Manifest.permission.WRITE_EXTERNAL_STORAGE    };        //请求状态码    private static int REQUEST_PERMISSION_CODE = 1;//循环申请字符串数组里面的权限，在小米中是直接弹出一个权限框等待用户确认，确认一次既将上面数组里面的权限全部申请if (Build.VERSION.SDK_INT > Build.VERSION_CODES.LOLLIPOP) {            if (ActivityCompat.checkSelfPermission(AlertActivity.this, Manifest.permission.CALL_PHONE) != PackageManager.PERMISSION_GRANTED) {                ActivityCompat.requestPermissions(AlertActivity.this, PERMISSIONS_STORAGE, REQUEST_PERMISSION_CODE);            }        }

下面是使用例子：

public class AlertActivity extends AppCompatActivity {       //读写权限    private static String[] PERMISSIONS_STORAGE = {            Manifest.permission.READ_EXTERNAL_STORAGE,            Manifest.permission.WRITE_EXTERNAL_STORAGE    };    //请求状态码    private static int REQUEST_PERMISSION_CODE = 1;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_alert);                //循环申请字符串数组里面所有的权限        if (Build.VERSION.SDK_INT > Build.VERSION_CODES.LOLLIPOP) {            if (ActivityCompat.checkSelfPermission(this, Manifest.permission.CALL_PHONE) != PackageManager.PERMISSION_GRANTED) {                ActivityCompat.requestPermissions(this, PERMISSIONS_STORAGE, REQUEST_PERMISSION_CODE);            }        }    }@Overridepublic void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {    if (requestCode == CODE_FOR_WRITE_PERMISSION){        if (permissions[0].equals(Manifest.permission.REQUEST_PERMISSION_CODE)            &&grantResults[0] == PackageManager.PERMISSION_GRANTED){           Toast.makeText(context, "用户同意使用权限", Toast.LENGTH_SHORT).show();        }else{            //用户不同意，向用户展示该权限作用            Toast.makeText(context, "用户不同意，向用户展示该权限作用", Toast.LENGTH_SHORT).show();            if (!ActivityCompat.shouldShowRequestPermissionRationale(this, Manifest.permission.WRITE_EXTERNAL_STORAGE)) {                AlertDialog dialog = new AlertDialog.Builder(this)                        .setMessage("该功能需要赋予访问的权限，不开启将无法正常工作！")                        .setPositiveButton("确定", new DialogInterface.OnClickListener() {                            @Override                            public void onClick(DialogInterface dialog, int which) {                                finish();                            }                        })                        .setNegativeButton("取消", new DialogInterface.OnClickListener() {                            @Override                            public void onClick(DialogInterface dialog, int which) {                                finish();                            }                        }).create();                dialog.show();                return;            }            finish();        }    }}     }

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