目前我正在使用picasso将MediaStore图像缩略图加载到ListView以下代码片段中:( video.getData()返回图像的实际路径,如mnt/sdcard/...)
Picasso.with(this.context)
.load(new File(photo.getData()))
.resize(50, 50).config(config)
.centerCrop()
.into(viewHolder.imageViewItem);
现在我无法通过传递video.getData()而不是加载MediaStore视频缩略图photo.getData()？
我有谷歌很多,阅读javadoc,加上搜索不同的论坛,包括这个阅读问题,但没有找到我的问题的正确答案.下面的代码片段工作正常,但我想知道在android中读取/写入文件的确切使用的函数.可以使用OutputStream,FileOutputSteam.write()写入内部存储,其他是使用OutputStreamWriter(FileOutputSteam).write(),进一步使用BufferedWriter(OutputStreamWriter).write(),最后使用PrintWriter.write().
对于InputStream情况,是否使用InputStream,FileInputSteam.read(),InputSreamReader(FileInputStream).read(),BufferedReader(InputStreamReader)也是如此.
我想知道哪种方法最合适.请帮助我完全与此混淆.
public class MainActivity extends Activity {
private static final String TAG = MainActivity.class.getName();
private static final String FILENAME = "students.txt";
private EditText stdId;
private Button Insert;
private Button Search;
private Button Update;
private Button Delete;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final String TAG = MainActivity.class.getName(); //output: com.fyp2.testapp.MainActivity
//value used for insert/delete/search
stdId = (EditText) findViewById(R.id.editTxtId);
//insert value in application sandbox file
Insert = (Button) findViewById(R.id.btnInsert);
Insert.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
String …我无法在苗条的v3中得到反应体,它总是空白.我的代码是:
<?php
use \Psr\Http\Message\ServerRequestInterface as Request;
use \Psr\Http\Message\ResponseInterface as Response;
use \Slim\App as Slim;
require 'vendor/autoload.php';
$config['determineRouteBeforeAppMiddleware'] = true;
$app = new Slim(['settings' => $config]);
$mw = (function (Request $request, Response $response, callable $next) {
$response = $response->withStatus(200)->write(' before ');
$response = $next($request, $response);
$body = $response->getBody()->getContents();
$response = $response->withJson(array('data' => $body)); // output should be {"data":" Hello, User seq1 seq2 "}
return $response;
});
$mw1 = (function (Request $request, Response $response, callable $next) {
$response = $next($request, $response);
$response …