看来我在转换JSONArray和JSONObject. 我的 PHP 看起来像这样
{"list":[{"Name":"Michael","Hour":"one"},{"Name":"Johhny","Hour":"two"}]}.
我正在尝试填充微调器，但它不起作用，它们保持空置。我看到了一些类似的问题，但没有很好的解释。希望你能帮助我。
public class Choose extends Activity {
Spinner spinner1, spinner2;
InputStream is=null;
String result=null;
String line=null;
String[] Name, Hour;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_izbora_grada);
spinner1=(Spinner) findViewById(R.id.spinner1);
spinner2=(Spinner) findViewById(R.id.spinner2);
final List<String> list1=new ArrayList<String>();
final List<String> list2=new ArrayList<String>();
Button b=(Button) findViewById(R.id.button);
b.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
try
{
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("http://192.168.0.105/new/spinner.php");
HttpResponse response = httpclient.execute(httppost);
Log.e("Fail 1", "3");
HttpEntity entity = response.getEntity();
Log.e("Fail 1", "4");
is = entity.getContent();
Log.e("Pass 1", "connection success ");
}
catch(Exception e)
{
Log.e("Fail 1", e.toString());
Toast.makeText(getApplicationContext(), "Invalid IP Address",Toast.LENGTH_LONG).show();
finish();
}
try
{
BufferedReader reader = new BufferedReader(new InputStreamReader(is,"iso-8859-1"),8);
StringBuilder sb = new StringBuilder();
while ((line = reader.readLine()) != null)
{
sb.append(line + "\n");
}
is.close();
result = sb.toString();
}
catch(Exception e)
{
Log.e("Fail 2", e.toString());
}
try
{
JSONObject jsonObj=new JSONObject(result);
JSONArray JA=jsonObj.getJSONArray("list");
JSONObject json= null;
Name = new String[JA.length()];
Hour = new String[JA.length()];
for(int i=0;i<JA.length();i++)
{
json=JA.getJSONObject(i);
Name[i] = json.getString("Name");
Hour[i]=json.getString("Hour");
}
Toast.makeText(getApplicationContext(), "sss",Toast.LENGTH_LONG).show();
for(int i=0;i<grad.length;i++)
{
list1.add(Name[i]);
list2.add(Hour[i]);
}
spinner_fn();
}
catch(Exception e)
{
Log.e("Fail 3", e.toString());
//login.this.finish();
}
}
});
}
private void spinner_fn() {
// TODO Auto-generated method stub
ArrayAdapter<String> dataAdapter1 = new ArrayAdapter<String>(getApplicationContext(),
android.R.layout.simple_spinner_item, Name);
dataAdapter1.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner1.setAdapter(dataAdapter1);
ArrayAdapter<String> dataAdapter2 = new ArrayAdapter<String>(getApplicationContext(),
android.R.layout.simple_spinner_item, Hour);
dataAdapter2.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner2.setAdapter(dataAdapter2);
spinner1.setOnItemSelectedListener(new OnItemSelectedListener()
{
public void onItemSelected(AdapterView<?> arg0, View arg1,int position, long id)
{
// TODO Auto-generated method stub
spinner2.setSelection(position);
}
@Override
public void onNothingSelected(AdapterView<?> arg0)
{
// TODO Auto-generated method stub
}
});
spinner2.setOnItemSelectedListener(new OnItemSelectedListener() {
public void onItemSelected(AdapterView<?> arg0, View arg1,int position, long arg3) {
// TODO Auto-generated method stub
spinner1.setSelection(position);
}
public void onNothingSelected(AdapterView<?> arg0) {
// TODO Auto-generated method stub
}
});
} }
这是来自 LogCat 的报告
07-29 14:41:59.928: D/dalvikvm(15381): GC_CONCURRENT freed 64K, 7% free 12511K/13319K, paused 18ms+13ms, total 63ms
07-29 14:41:59.928: D/dalvikvm(15381): WAIT_FOR_CONCURRENT_GC blocked 27ms
07-29 14:42:00.118: D/libEGL(15381): loaded /system/lib/egl/libEGL_mali.so
07-29 14:42:00.138: D/libEGL(15381): loaded /system/lib/egl/libGLESv1_CM_mali.so
07-29 14:42:00.148: D/libEGL(15381): loaded /system/lib/egl/libGLESv2_mali.so
07-29 14:42:00.153: D/(15381): Device driver API match
07-29 14:42:00.153: D/(15381): Device driver API version: 10
07-29 14:42:00.153: D/(15381): User space API version: 10
07-29 14:42:00.153: D/(15381): mali: REVISION=Linux-r2p4-02rel0 BUILD_DATE=Tue Oct 16 15:37:13 KST 2012
07-29 14:42:00.218: D/OpenGLRenderer(15381): Enabling debug mode 0
07-29 14:42:17.183: D/dalvikvm(16000): GC_CONCURRENT freed 64K, 7% free 12511K/13319K, paused 5ms+2ms, total 22ms
07-29 14:42:17.183: D/dalvikvm(16000): WAIT_FOR_CONCURRENT_GC blocked 9ms
07-29 14:42:17.268: D/libEGL(16000): loaded /system/lib/egl/libEGL_mali.so
07-29 14:42:17.278: D/libEGL(16000): loaded /system/lib/egl/libGLESv1_CM_mali.so
07-29 14:42:17.278: D/libEGL(16000): loaded /system/lib/egl/libGLESv2_mali.so
07-29 14:42:17.283: D/(16000): Device driver API match
07-29 14:42:17.283: D/(16000): Device driver API version: 10
07-29 14:42:17.283: D/(16000): User space API version: 10
07-29 14:42:17.283: D/(16000): mali: REVISION=Linux-r2p4-02rel0 BUILD_DATE=Tue Oct 16 15:37:13 KST 2012
07-29 14:42:17.313: D/OpenGLRenderer(16000): Enabling debug mode 0
07-29 14:42:31.903: D/dalvikvm(16000): GC_CONCURRENT freed 12K, 6% free 12897K/13703K, paused 13ms+2ms, total 26ms