android java线程中的新ArrayAdapter
我在为android java线程中的微调器制作新的ArrayAdapter时遇到问题。我无法使这项工作,因为线程没有链接到我的主类。我在Internet上发现,我需要使用AsyncTask,而不是使用线程,但有一个原因,我无法获取其原理。所以我想知道如何解决这个问题android java线程中的新ArrayAdapter,java,android,multithreading,Java,Android,Multithreading,我在为android java线程中的微调器制作新的ArrayAdapter时遇到问题。我无法使这项工作,因为线程没有链接到我的主类。我在Internet上发现,我需要使用AsyncTask,而不是使用线程,但有一个原因,我无法获取其原理。所以我想知道如何解决这个问题 public void connect() throws InterruptedException { Thread thread = new Thread(new Runnable(){ @Overr
public void connect() throws InterruptedException
{
Thread thread = new Thread(new Runnable(){
@Override
public void run() {
HttpClient httpclient = new DefaultHttpClient();
// Prepare a request object
HttpGet httpget = new HttpGet("http://192.168.1.118:8080/quiz/output.php");
// Execute the request
HttpResponse response;
try {
response = httpclient.execute(httpget);
// Examine the response status
//Log.i("Info",response.getStatusLine().toString()); Comes back with HTTP/1.1 200 OK
// Get hold of the response entity
HttpEntity entity = response.getEntity();
if (entity != null) {
InputStream instream = entity.getContent();
String result= convertStreamToString(instream);
jsonArray = new JSONArray(result);
instream.close();
}
} catch (Exception e) {
Log.e("Error",e.toString());
}
}
});
Thread thread2 = new Thread(new Runnable(){
@Override
public void run() {
List<String> list = new ArrayList<String>();
for (int i=0; i<jsonArray.length(); i++) {
try {
JSONObject item = jsonArray.getJSONObject(i);
String ID = item.getString("groepID");
String groepNaam = item.getString("groepNaam");
Log.e("string", "groepid = " + ID + " " + groepNaam);
} catch (JSONException e) {
e.printStackTrace();
}
}
ArrayAdapter<String> dataAdapter = new ArrayAdapter<String>(this,android.R.layout.simple_spinner_item, list);
dataAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
selectgroep.setAdapter(dataAdapter);
}
});
thread.start();
thread.join();
thread2.start();
}
public void connect()引发InterruptedException
{
Thread Thread=新线程(new Runnable(){
@凌驾
公开募捐{
HttpClient HttpClient=新的DefaultHttpClient();
//准备一个请求对象
HttpGet HttpGet=新的HttpGet(“http://192.168.1.118:8080/quiz/output.php");
//执行请求
HttpResponse响应;
试一试{
response=httpclient.execute(httpget);
//检查响应状态
//Log.i(“Info”,response.getStatusLine().toString());返回HTTP/1.1200 OK
//获取响应实体
HttpEntity=response.getEntity();
如果(实体!=null){
InputStream instream=entity.getContent();
字符串结果=convertStreamToString(流内);
jsonArray=新jsonArray(结果);
流内关闭();
}
}捕获(例外e){
Log.e(“Error”,e.toString());
}
}
});
Thread thread2=新线程(new Runnable(){
@凌驾
公开募捐{
列表=新的ArrayList();
对于(int i=0;i使用此
前面的活动类:
ArrayAdapter<String> dataAdapter = new ArrayAdapter<String>(MyActivity.this,
android.R.layout.simple_spinner_item, list);
ArrayAdapter dataAdapter=新的ArrayAdapter(MyActivity.this,
android.R.layout.simple\u微调器\u项目,列表);
请在此处阅读更多信息:
ArrayAdapter<String> dataAdapter = new ArrayAdapter<String>(MyActivity.this,
android.R.layout.simple_spinner_item, list);