Android—检测权限并申请

private Button btn_enter;    private final static int REQUEST_CODE_STORAGE = 1;    private SharedPreferences sp;    private String[] PERMISSIONS_STORAGE = {            Manifest.permission.WRITE_EXTERNAL_STORAGE,            Manifest.permission.READ_EXTERNAL_STORAGE    };    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_index);        btn_enter = findViewById(R.id.btn_enter);        btn_enter.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                Enter();            }        });        //ButterKnife.bind(this);        sp = getSharedPreferences("myStore", Context.MODE_PRIVATE);        boolean isFirst = sp.getBoolean("isFirst",true);        if(!isFirst){            Enter();        }        verifyStoragePermission(this);    }   // @OnClick(R.id.btn_enter)    public void Enter(){        Toast.makeText(this,"Enter方法",Toast.LENGTH_LONG).show();        sp.edit().putBoolean("isFirst",false).commit();        startActivity(new Intent(this,MainActivity.class));        finish();    }    private void verifyStoragePermission(Activity activity) {        //1.检测权限        int permission = ActivityCompat.checkSelfPermission(activity, Manifest.permission.WRITE_EXTERNAL_STORAGE);        if (permission != PermissionChecker.PERMISSION_GRANTED) {            //2.没有权限，弹出对话框申请            ActivityCompat.requestPermissions(activity, PERMISSIONS_STORAGE, REQUEST_CODE_STORAGE);        }    }    @Override    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {        super.onRequestPermissionsResult(requestCode, permissions, grantResults);        if (grantResults[0] == PermissionChecker.PERMISSION_GRANTED) {            //权限申请成功            Toast.makeText(this, "授权SD卡权限成功", Toast.LENGTH_SHORT).show();        } else {            //权限申请失败            Toast.makeText(this, "授权SD卡权限失败，可能会影响使用", Toast.LENGTH_SHORT).show();        }    }
更多相关文章

随机推荐
