尝试在android listview中显示JSONArray但是我无法得到它。
这是源代码
public class Period extends Activity {
private RadioGroup radioSexGroup;
private RadioButton radioSexButton;
private Button btnPeriod,btnback,btnchangestudy;
TextView tv;
ProgressDialog prgDialog;
private String period;
DBHelper dbUser = new DBHelper(Period.this);
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.period);
ImageView image = (ImageView) findViewById(R.id.test_image);
tv = (TextView) findViewById(R.id.display);
Calendar c = Calendar.getInstance();
SimpleDateFormat format4;
format4 = new SimpleDateFormat("dd/MMM/yyyy HH:mm:ss");
tv.setText(format4.format(c.getTime()));
prgDialog = new ProgressDialog(this);
prgDialog.setMessage("Please wait...");
prgDialog.setCancelable(false);
addListenerOnButton();
}
public void addListenerOnButton() {
radioSexGroup = (RadioGroup) findViewById(R.id.radioPeriod);
btnPeriod = (Button) findViewById(R.id.btn_submit_period);
btnchangestudy=(Button) findViewById(R.id.btn_change_study);
btnchangestudy.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
if(v==btnchangestudy)
{
invokeWS();
Intent intent =new Intent(Period.this,Menu.class);
startActivity(intent);
}
}
});
}
public void invokeWS(){
prgDialog.show();
Log.d("sr...", "sri....");
AsyncHttpClient client = new AsyncHttpClient();
client.get("http://192.168.10.8:8080/useraccount/barcode/studyid",new AsyncHttpResponseHandler() {
String s, s1, s2;
@Override
public void onSuccess(String response) {
prgDialog.hide();
ListView list = (ListView) findViewById(R.id.mobile_list);
try {
List<Data> dataList= new ArrayList();
JSONArray JSON = new JSONArray(response);
for (int i = 0; i < JSON.length(); i++) {
JSONObject obj = JSON.getJSONObject(i);
Data d = new Data();
d.setId(obj.getString("id"));
d.setNum(obj.getString("num"));
dataList.add(d);
}
ArrayAdapter<Data> itemsAdapter =new ArrayAdapter<Data>(Period.this,android.R.layout.simple_list_item_1, dataList);
ListView listView = (ListView) findViewById(R.id.lvItems);
listView.setAdapter(itemsAdapter);
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
@Override
public void onFailure(int statusCode, Throwable error,
String content) {
prgDialog.hide();
if(statusCode == 404){
Toast.makeText(getApplicationContext(), "Requested resource not found", Toast.LENGTH_LONG).show();
}
else if(statusCode == 500){
Toast.makeText(getApplicationContext(), "Something went wrong at server end", Toast.LENGTH_LONG).show();
}
else{
Toast.makeText(getApplicationContext(), "Unexpected Error occcured! [Most common Error: Device might not be connected to Internet or remote server is not up and running]", Toast.LENGTH_LONG).show();
}
}
});
}
public void showMessage(String title, String message) {
Builder builder = new Builder(this);
builder.setCancelable(true);
builder.setTitle(title);
builder.setMessage(message);
builder.show();
}
}
以及我在logcat中获得的以下输出
12-07 16:34:40.723: D/sr...(276): sri....
12-07 16:34:41.003: D/dalvikvm(276): GC_FOR_MALLOC freed 12550 objects / 792856 bytes in 159ms
12-07 16:34:43.943: D/ss(276): 14
12-07 16:34:43.943: D/sw(276): testone
12-07 16:34:43.943: D/ss(276): 13
12-07 16:34:43.943: D/sw(276): kjh
12-07 16:34:43.943: D/ss(276): 12
12-07 16:34:43.943: D/sw(276): 321
12-07 16:34:43.943: D/ss(276): 11
12-07 16:34:43.943: D/sw(276): clinical
12-07 16:34:43.943: D/ss(276): 10
12-07 16:34:43.943: D/sw(276): fsd
12-07 16:34:43.953: D/ss(276): 9
12-07 16:34:43.953: D/sw(276): 2015
12-07 16:34:43.953: D/ss(276): 8
12-07 16:34:43.953: D/sw(276): 133
12-07 16:34:43.953: D/ss(276): 7
12-07 16:34:43.953: D/sw(276): 007
12-07 16:34:43.953: D/ss(276): 6
12-07 16:34:43.953: D/sw(276): TESTSTUDY
12-07 16:34:43.963: D/ss(276): 5
12-07 16:34:43.963: D/sw(276): 111
12-07 16:34:43.973: D/ss(276): 4
12-07 16:34:43.973: D/sw(276): 1000
12-07 16:34:43.973: D/ss(276): 3
12-07 16:34:43.973: D/sw(276): 121
12-07 16:34:43.983: D/ss(276): 2
12-07 16:34:43.983: D/sw(276): s one
12-07 16:34:43.983: D/ss(276): 1
12-07 16:34:43.983: D/sw(276): Default_Study
提前致谢
这是period.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal">
<TableLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_vertical|center_horizontal" >
<TableRow
android:id="@+id/tableRow1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center_vertical|center_horizontal">
<ImageView
android:id="@+id/test_image"
android:src="@drawable/logo4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
/>
<TextView
android:id="@+id/display"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="right"
android:layout_weight="1"
android:text= />
</TableRow>
<TableRow
android:id="@+id/tableRow2"
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
<RadioGroup
android:id="@+id/radioPeriod"
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
<RadioButton
android:id="@+id/r1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/radio_1"
android:checked="true"/>
<RadioButton
android:id="@+id/r2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/radio_2" />
</RadioGroup>
</TableRow>
<TableRow
android:id="@+id/tableRow3"
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
<Button
android:id="@+id/btn_submit_period"
android:layout_width="10dp"
android:layout_height="40dp"
android:text="@string/submitPeriod"
android:onClick="onClick"/>
</TableRow>
<TableRow
android:id="@+id/tableRow4"
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
<Button
android:id="@+id/btn_change_study"
android:layout_width="10dp"
android:layout_height="40dp"
android:text="@string/changestudy"
android:onClick="onClick"/>
</TableRow>
<TableRow
android:id="@+id/tableRow5"
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
<Button
android:id="@+id/btnLogin"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginTop="20dip"
android:background="#ff6347"
android:onClick="loginUser"
android:text="change studyyy"
android:textColor="#fff" />
</TableRow>
</TableLayout>
</LinearLayout>