int permission_write=ContextCompat.checkSelfPermission(MainActivity.this,
Manifest.permission.WRITE_EXTERNAL_STORAGE);
int permission_read=ContextCompat.checkSelfPermission(MainActivity.this,
Manifest.permission.READ_EXTERNAL_STORAGE);
if(permission_write!= PackageManager.PERMISSION_GRANTED
|| permission_read!=PackageManager.PERMISSION_GRANTED){
Toast.makeText(this, "正在請求權限", Toast.LENGTH_SHORT).show();
//申請權限，特徵碼自定義爲1，可在回調時進行相關判斷
ActivityCompat.requestPermissions(MainActivity.this,new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE,Manifest.permission.READ_EXTERNAL_STORAGE},1);
}else{
//TODO
}
重寫方法OnRequestPermissionResult，其中常量1是申請權限時填入的特徵碼
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
switch (requestCode){
case 1:
if(grantResults.length>0 && grantResults[0]==PackageManager.PERMISSION_GRANTED){
//權限已成功申請
}else{
//用戶拒絕授權
Toast.makeText(this, "無法獲取SD卡讀寫權限", Toast.LENGTH_SHORT).show();
finish();
}
break;
default:
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
}
}