我想从mysql数据库检索数据使用webserver php当用户点击项目在旋转器在android应用....但它显示应用程序不幸停止了....不知道误差是多少....JSONparser class
public class JSONParser {
static InputStream is = null;
static JSONObject jObj = null;
static String json = "";
public JSONParser() {
}
public JSONObject makeHttpRequest(String url, String method,
List<NameValuePair> params) {
try {
if (method == "POST") {
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost(url);
httpPost.setEntity(new UrlEncodedFormEntity(params));
HttpResponse httpResponse = httpClient.execute(httpPost);
HttpEntity httpEntity = httpResponse.getEntity();
is = httpEntity.getContent();
} else if (method == "GET") {
DefaultHttpClient httpClient = new DefaultHttpClient();
String paramString = URLEncodedUtils.format(params, "utf- 8");
url += "?" + paramString;
HttpGet httpGet = new HttpGet(url);
HttpResponse httpResponse = httpClient.execute(httpGet);
HttpEntity httpEntity = httpResponse.getEntity();
is = httpEntity.getContent();
}
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
try {
BufferedReader reader = new BufferedReader(new InputStreamReader(
is, "iso-8859-1"), 8);
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line + "'n");
}
is.close();
json = sb.toString();
} catch (Exception e) {
Log.e("Buffer Error", "Error converting result " + e.toString());
}
try {
jObj = new JSONObject(json);
} catch (JSONException e) {
Log.e("JSON Parser", "Error parsing data " + e.toString());
}
return jObj;
}
}
public class Plantgrow extends Activity {
Spinner plantts;
Intent grow;
Button groow;
TextView info;
String data,select;
JSONParser jParser = new JSONParser();
private static String url_imp_info = "http://10.0.2.2:850/planting/plantinfo.php";
private static final String TAG_SUCCESS = "success";
private static final String TAG_INFOS = "infos";
private static final String TAG_PINFO= "pinfo";
JSONArray infos = null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_plantgrow);
plantts=(Spinner) findViewById(R.id.spinner1);
info=(TextView) findViewById(R.id.txt_plantinfo);
ArrayAdapter<CharSequence> adapter=ArrayAdapter.createFromResource(this,R.array.plants,android.R.layout.simple_spinner_item);
plantts.setAdapter(adapter);
groow=(Button) findViewById(R.id.bt_grow);
plantts.setOnItemSelectedListener(new OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> arg0, View arg1,
int arg2, long arg3) {
// TODO Auto-generated method stub
Object item=arg0.getItemAtPosition(arg2);
select=item.toString();
}
@Override
public void onNothingSelected(AdapterView<?> arg0) {
// TODO Auto-generated method stub
}
});
groow.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
grow=new Intent(getApplicationContext(), Planting.class);
startActivity(grow);
}
});
new GetInfo().execute();
}
class GetInfo extends AsyncTask<String, String, String> {
protected String doInBackground(String... args) {
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("select", select));
JSONObject json = jParser.makeHttpRequest(url_imp_info, "GET",
params);
Log.d("All names: ", json.toString());
try {
int success = json.getInt(TAG_SUCCESS);
if (success == 1) {
infos = json.getJSONArray(TAG_INFOS);
for (int i = 0; i < infos.length(); i++) {
JSONObject c = infos.getJSONObject(i);
data = c.getString(TAG_PINFO);
}
}
else {
Intent i = new Intent(getApplicationContext(), Main2.class);
i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(i);
}
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
protected void onPostExecute(String file_url) {
super.onPostExecute(file_url);
runOnUiThread(new Runnable() {
public void run() {
info.setText(data);
}
});
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.activity_plantgrow, menu);
return true;
}
}
<?php
$response = array();
require_once __DIR__ . '/db_connect.php';
$db = new DB_CONNECT();
mysql_query("SET NAMES 'utf8'");
mysql_query("SET CHARACTER SET 'utf8'");
if (isset($_GET["select"])) {
$select = $_GET['select'];
$result = mysql_query("SELECT importantInfo FROM plantinfo WHERE plantName=$select") or die(mysql_error());
if (!empty($result)) {
if (mysql_num_rows($result) > 0)
{
$response["infos"] = array();
while ($row = mysql_fetch_array($result)) {
$info = array();
$info["pinfo"] = $row["importantInfo"];
array_push($response["infos"], $info);
}
$response["success"] = 1;
echo json_encode($response);
} else {
$response["success"] = 0;
$response["message"] = "No info found";
echo json_encode($response);
}
} else
{ $response["success"] = 0;
$response["message"] = "No info found";
echo json_encode($response);
}
} else {
$response["success"] = 0;
$response["message"] = "Required field(s) is missing";
echo json_encode($response);
}
?>
logCat
03-25 19:48:58.737: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:48:58.747: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:48:58.957: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:48:58.987: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:48:59.486: D/dalvikvm(770): GC_FOR_ALLOC freed 86K, 8% free 2526K/2728K, paused 28ms, total 30ms
03-25 19:48:59.506: I/dalvikvm-heap(770): Grow heap (frag case) to 5.578MB for 3145744- byte allocation
03-25 19:48:59.546: D/dalvikvm(770): GC_FOR_ALLOC freed 1K, 4% free 5596K/5804K, paused 37ms, total 37ms
03-25 19:48:59.596: D/dalvikvm(770): GC_CONCURRENT freed <1K, 4% free 5596K/5804K, paused 4ms+14ms, total 52ms
03-25 19:48:59.727: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:48:59.727: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:48:59.727: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:48:59.787: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:48:59.827: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:48:59.837: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:48:59.887: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:48:59.917: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:48:59.927: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:48:59.927: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:48:59.927: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:48:59.927: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:48:59.927: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:48:59.947: D/gralloc_goldfish(770): Emulator without GPU emulation detected.
03-25 19:49:00.187: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:00.237: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:00.297: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:00.297: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:00.507: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:00.507: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:00.507: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:00.556: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:00.736: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:00.736: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:00.766: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:00.766: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:00.826: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:00.826: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:01.371: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:01.371: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:01.417: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:01.430: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:01.933: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:01.936: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:02.036: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:02.036: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:02.326: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:02.366: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:02.377: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:02.377: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:02.457: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:02.457: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:02.527: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:02.537: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:02.727: I/Choreographer(770): Skipped 40 frames! The application may be doing too much work on its main thread.
03-25 19:49:02.727: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:02.747: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:02.857: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:02.887: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:02.887: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:03.257: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:03.257: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:04.427: D/dalvikvm(770): GC_FOR_ALLOC freed 55K, 3% free 5723K/5896K, paused 266ms, total 297ms
03-25 19:49:04.587: I/dalvikvm-heap(770): Grow heap (frag case) to 8.701MB for 3145744-byte allocation
03-25 19:49:04.927: D/dalvikvm(770): GC_CONCURRENT freed 5K, 3% free 8790K/8972K, paused 12ms+39ms, total 332ms
03-25 19:49:05.977: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:06.007: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:06.277: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:06.456: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:06.516: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:06.546: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:06.576: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:06.576: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:06.576: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:06.666: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:06.666: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:06.706: I/Choreographer(770): Skipped 35 frames! The application may be doing too much work on its main thread.
03-25 19:49:06.727: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:06.727: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:06.807: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:06.807: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:06.827: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:06.848: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:07.027: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:07.077: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:07.097: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:07.127: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:07.217: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:07.217: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:07.727: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:07.736: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:08.117: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:08.417: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:08.467: I/Choreographer(770): Skipped 64 frames! The application may be doing too much work on its main thread.
03-25 19:49:08.477: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:08.517: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:08.517: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:08.517: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:08.738: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:08.738: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:08.897: I/Choreographer(770): Skipped 31 frames! The application may be doing too much work on its main thread.
03-25 19:49:08.897: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:08.907: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:09.037: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:09.037: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:09.366: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:09.366: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:09.406: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:09.406: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:09.497: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:09.497: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:09.537: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:09.590: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:09.697: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:09.877: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:09.887: I/Choreographer(770): Skipped 39 frames! The application may be doing too much work on its main thread.
03-25 19:49:09.897: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:09.907: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:10.150: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:10.150: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:10.210: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:11.517: D/dalvikvm(770): GC_FOR_ALLOC freed 66K, 3% free 8899K/9084K, paused 277ms, total 315ms
03-25 19:49:11.727: I/dalvikvm-heap(770): Grow heap (frag case) to 11.801MB for 3145744-byte allocation
03-25 19:49:12.126: D/dalvikvm(770): GC_CONCURRENT freed 5K, 2% free 11965K/12160K, paused 44ms+44ms, total 399ms
03-25 19:49:12.917: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:12.957: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:13.047: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:13.217: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:13.298: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:13.316: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:13.337: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:13.337: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:13.356: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:13.476: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:13.476: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:13.526: I/Choreographer(770): Skipped 59 frames! The application may be doing too much work on its main thread.
03-25 19:49:13.546: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:13.546: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:13.586: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:13.586: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:13.596: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:13.606: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:13.807: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:13.847: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:13.877: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:13.908: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:14.481: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:14.517: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:14.548: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:14.548: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:16.426: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:16.487: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:16.487: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:16.506: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:16.637: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:16.637: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:16.707: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:16.777: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:16.897: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:17.077: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:17.087: I/Choreographer(770): Skipped 48 frames! The application may be doing too much work on its main thread.
03-25 19:49:17.097: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:17.117: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:17.599: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:17.599: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:17.637: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:18.354: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:18.404: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:18.514: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:18.845: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:18.904: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:18.914: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:18.924: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:18.934: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:18.934: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:19.023: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:19.023: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:19.033: I/Choreographer(770): Skipped 138 frames! The application may be doing too much work on its main thread.
03-25 19:49:19.033: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:19.054: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:19.284: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:19.355: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:19.405: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:19.434: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:19.534: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:19.534: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:19.614: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:19.614: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:19.964: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:19.964: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:19.964: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:20.014: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:20.034: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:20.034: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:20.084: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:20.084: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:20.084: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:20.084: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:20.094: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:20.094: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:20.104: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:20.114: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:20.134: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:20.144: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:20.144: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:20.144: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:20.174: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:20.174: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:20.174: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:20.174: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:20.204: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:20.204: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:20.204: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:20.204: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:21.736: E/JSON Parser(770): Error parsing data org.json.JSONException: Value Unknown of type java.lang.String cannot be converted to JSONObject
03-25 19:49:21.745: W/dalvikvm(770): threadid=16: thread exiting with uncaught exception (group=0x40a70930)
03-25 19:49:21.814: E/AndroidRuntime(770): FATAL EXCEPTION: AsyncTask #5
03-25 19:49:21.814: E/AndroidRuntime(770): java.lang.RuntimeException: An error occured while executing doInBackground()
03-25 19:49:21.814: E/AndroidRuntime(770): at android.os.AsyncTask$3.done(AsyncTask.java:299)
03-25 19:49:21.814: E/AndroidRuntime(770): at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:352)
03-25 19:49:21.814: E/AndroidRuntime(770): at java.util.concurrent.FutureTask.setException(FutureTask.java:219)
03-25 19:49:21.814: E/AndroidRuntime(770): at java.util.concurrent.FutureTask.run(FutureTask.java:239)
03-25 19:49:21.814: E/AndroidRuntime(770): at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
03-25 19:49:21.814: E/AndroidRuntime(770): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
03-25 19:49:21.814: E/AndroidRuntime(770): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
03-25 19:49:21.814: E/AndroidRuntime(770): at java.lang.Thread.run(Thread.java:856)
03-25 19:49:21.814: E/AndroidRuntime(770): Caused by: java.lang.NullPointerException
03-25 19:49:21.814: E/AndroidRuntime(770): at com.example.agricultureguide.Plantgrow$GetInfo.doInBackground(Plantgrow.java:102)
03-25 19:49:21.814: E/AndroidRuntime(770): at com.example.agricultureguide.Plantgrow$GetInfo.doInBackground(Plantgrow.java:1)
03-25 19:49:21.814: E/AndroidRuntime(770): at android.os.AsyncTask$2.call(AsyncTask.java:287)
03-25 19:49:21.814: E/AndroidRuntime(770): at java.util.concurrent.FutureTask.run(FutureTask.java:234)
03-25 19:49:21.814: E/AndroidRuntime(770): ... 4 more
03-25 19:49:21.954: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:22.114: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:22.124: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:23.704: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:23.704: I/Choreographer(770): Skipped 413 frames! The application may be doing too much work on its main thread.
03-25 19:49:23.714: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:23.914: W/Trace(770): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:28.765: I/Process(770): Sending signal. PID: 770 SIG: 9
03-25 19:49:31.345: W/Trace(795): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:32.144: W/Trace(795): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:32.176: W/Trace(795): Unexpected value from nativeGetEnabledTags: 0
03-25 19:49:33.025: D/dalvikvm(795): GC_FOR_ALLOC freed 52K, 7% free 2526K/2696K, paused 60ms, total 66ms
03-25 19:49:33.084: I/dalvikvm-heap(795): Grow heap (frag case) to 5.578MB for 3145744-byte allocation
03-25 19:49:33.214: D/dalvikvm(795): GC_FOR_ALLOC freed 1K, 4% free 5596K/5772K, paused 58ms, total 58ms
03-25 19:49:33.334: D/dalvikvm(795): GC_CONCURRENT freed <1K, 4% free 5596K/5772K, paused 17ms+6ms, total 120ms
[2014-03-27 22:16:16 - AgricultureGuide] ------------------------------
[2014-03-27 22:16:16 - AgricultureGuide] Android Launch!
[2014-03-27 22:16:16 - AgricultureGuide] adb is running normally.
[2014-03-27 22:16:16 - AgricultureGuide] Performing com.example.agricultureguide.MainActivity activity launch
[2014-03-27 22:16:16 - AgricultureGuide] Automatic Target Mode: using existing emulator 'emulator-5554' running compatible AVD 'agriculture'
[2014-03-27 22:16:16 - AgricultureGuide] Uploading AgricultureGuide.apk onto device 'emulator-5554'
[2014-03-27 22:16:30 - AgricultureGuide] Installing AgricultureGuide.apk...
[2014-03-27 22:16:36 - AgricultureGuide] Success!
[2014-03-27 22:16:36 - AgricultureGuide] Starting activity com.example.agricultureguide.MainActivity on device emulator-5554
[2014-03-27 22:16:38 - AgricultureGuide] ActivityManager: Starting: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] cmp=com.example.agricultureguide/.MainActivity }
检查onPostExecute()的成功条件
if(success==1)
{ info.setText(data);
}
else
{
Intent i = new Intent(getApplicationContext(), Main2.class);
i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(i);
}
onPostExecute()只在UI线程中运行，所以你可以避免在那里运行runOnUiThread
当我使用StringWithTag class