Android java.lang.RuntimeException错误,无法找出原因
我的应用程序的logcat中出现java.lang.RuntimeException错误。然后显示错误来自:Android java.lang.RuntimeException错误,无法找出原因,android,runtimeexception,Android,Runtimeexception,我的应用程序的logcat中出现java.lang.RuntimeException错误。然后显示错误来自: protected String doInBackground(String... args) { // getting updated data from EditTexts gps = new GPSTracker(EditProductActivity.this); double inputlat = gps.getLatitude
protected String doInBackground(String... args) {
// getting updated data from EditTexts
gps = new GPSTracker(EditProductActivity.this);
double inputlat = gps.getLatitude();
double inputlong = gps.getLongitude();
String inputLat=Double.toString(inputlat);
String inputLong=Double.toString(inputlong);
// getting updated data from EditTexts
String name = txtName.getText().toString();
String longitude = inputLong;
String latitude = inputLat;
Log.d("Get this far?", pid);//something wrong with these when I want to save
String pavement = spinpavement.getSelectedItem().toString();
String traffic = spintraffic.getSelectedItem().toString();
String environment = spinenviro.getSelectedItem().toString();
//Oh no something is wrong here
// Building Parameters
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair(TAG_PID, pid));
params.add(new BasicNameValuePair(TAG_NAME, name));
params.add(new BasicNameValuePair(TAG_LONG, longitude));
params.add(new BasicNameValuePair(TAG_LAT, latitude));
params.add(new BasicNameValuePair(TAG_PAVEMENT, pavement));
params.add(new BasicNameValuePair(TAG_TRAFFIC, traffic));
params.add(new BasicNameValuePair(TAG_ENVIRONMENT, environment));
// sending modified data through http request
// Notice that update product url accepts POST method
JSONObject json = jsonParser.makeHttpRequest(url_update_product,
"POST", params);
// check json success tag
try {
int success = json.getInt(TAG_SUCCESS);
if (success == 1) {
// successfully updated
//Intent i = getIntent();
// send result code 100 to notify about product update
//setResult(100, i);
finish();
} else {
// failed to update product
}
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
但我不知道它有什么毛病
这是错误开始的整个logcat
01-16 19:20:29.446: E/AndroidRuntime(24403): FATAL EXCEPTION: AsyncTask #2
01-16 19:20:29.446: E/AndroidRuntime(24403): Process: com.example.androidhive, PID: 24403
01-16 19:20:29.446: E/AndroidRuntime(24403): java.lang.RuntimeException: An error occured while executing doInBackground()
01-16 19:20:29.446: E/AndroidRuntime(24403): at android.os.AsyncTask$3.done(AsyncTask.java:300)
01-16 19:20:29.446: E/AndroidRuntime(24403): at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:355)
01-16 19:20:29.446: E/AndroidRuntime(24403): at java.util.concurrent.FutureTask.setException(FutureTask.java:222)
01-16 19:20:29.446: E/AndroidRuntime(24403): at java.util.concurrent.FutureTask.run(FutureTask.java:242)
01-16 19:20:29.446: E/AndroidRuntime(24403): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
01-16 19:20:29.446: E/AndroidRuntime(24403): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
01-16 19:20:29.446: E/AndroidRuntime(24403): at java.lang.Thread.run(Thread.java:841)
01-16 19:20:29.446: E/AndroidRuntime(24403): Caused by: java.lang.NullPointerException
01-16 19:20:29.446: E/AndroidRuntime(24403): at com.example.androidhive.EditProductActivity$SaveProductDetails.doInBackground(EditProductActivity.java:225)
01-16 19:20:29.446: E/AndroidRuntime(24403): at com.example.androidhive.EditProductActivity$SaveProductDetails.doInBackground(EditProductActivity.java:1)
01-16 19:20:29.446: E/AndroidRuntime(24403): at android.os.AsyncTask$2.call(AsyncTask.java:288)
01-16 19:20:29.446: E/AndroidRuntime(24403): at java.util.concurrent.FutureTask.run(FutureTask.java:237)
01-16 19:20:29.446: E/AndroidRuntime(24403): ... 3 more
01-16 19:20:30.019: E/WindowManager(24403): android.view.WindowLeaked: Activity com.example.androidhive.EditProductActivity has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView{421bbd78 V.E..... R.....ID 0,0-684,192} that was originally added here
01-16 19:20:30.019: E/WindowManager(24403): at android.view.ViewRootImpl.<init>(ViewRootImpl.java:374)
01-16 19:20:30.019: E/WindowManager(24403): at android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:248)
01-16 19:20:30.019: E/WindowManager(24403): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:69)
01-16 19:20:30.019: E/WindowManager(24403): at android.app.Dialog.show(Dialog.java:286)
01-16 19:20:30.019: E/WindowManager(24403): at com.example.androidhive.EditProductActivity$SaveProductDetails.onPreExecute(EditProductActivity.java:202)
01-16 19:20:30.019: E/WindowManager(24403): at android.os.AsyncTask.executeOnExecutor(AsyncTask.java:587)
01-16 19:20:30.019: E/WindowManager(24403): at android.os.AsyncTask.execute(AsyncTask.java:535)
01-16 19:20:30.019: E/WindowManager(24403): at com.example.androidhive.EditProductActivity.onClick(EditProductActivity.java:87)
01-16 19:20:30.019: E/WindowManager(24403): at java.lang.reflect.Method.invokeNative(Native Method)
01-16 19:20:30.019: E/WindowManager(24403): at java.lang.reflect.Method.invoke(Method.java:515)
01-16 19:20:30.019: E/WindowManager(24403): at android.view.View$1.onClick(View.java:3837)
01-16 19:20:30.019: E/WindowManager(24403): at android.view.View.performClick(View.java:4452)
01-16 19:20:30.019: E/WindowManager(24403): at android.view.View$PerformClick.run(View.java:18498)
01-16 19:20:30.019: E/WindowManager(24403): at android.os.Handler.handleCallback(Handler.java:733)
01-16 19:20:30.019: E/WindowManager(24403): at android.os.Handler.dispatchMessage(Handler.java:95)
01-16 19:20:30.019: E/WindowManager(24403): at android.os.Looper.loop(Looper.java:137)
01-16 19:20:30.019: E/WindowManager(24403): at android.app.ActivityThread.main(ActivityThread.java:5083)
01-16 19:20:30.019: E/WindowManager(24403): at java.lang.reflect.Method.invokeNative(Native Method)
01-16 19:20:30.019: E/WindowManager(24403): at java.lang.reflect.Method.invoke(Method.java:515)
01-16 19:20:30.019: E/WindowManager(24403): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:777)
01-16 19:20:30.019: E/WindowManager(24403): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:593)
01-16 19:20:30.019: E/WindowManager(24403): at dalvik.system.NativeStart.main(Native Method)
01-16 19:20:29.446:E/AndroidRuntime(24403):致命异常:AsyncTask#2
01-16 19:20:29.446:E/AndroidRuntime(24403):进程:com.example.androidhive,PID:24403
01-16 19:20:29.446:E/AndroidRuntime(24403):java.lang.RuntimeException:执行doInBackground()时出错
01-16 19:20:29.446:E/AndroidRuntime(24403):在android.os.AsyncTask$3.done(AsyncTask.java:300)
01-16 19:20:29.446:E/AndroidRuntime(24403):在java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:355)
01-16 19:20:29.446:E/AndroidRuntime(24403):位于java.util.concurrent.FutureTask.setException(FutureTask.java:222)
01-16 19:20:29.446:E/AndroidRuntime(24403):在java.util.concurrent.FutureTask.run(FutureTask.java:242)处
01-16 19:20:29.446:E/AndroidRuntime(24403):位于java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
01-16 19:20:29.446:E/AndroidRuntime(24403):位于java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
01-16 19:20:29.446:E/AndroidRuntime(24403):在java.lang.Thread.run(Thread.java:841)处
01-16 19:20:29.446:E/AndroidRuntime(24403):由以下原因引起:java.lang.NullPointerException
01-16 19:20:29.446:E/AndroidRuntime(24403):在com.example.androidhive.EditProductActivity$SaveProductDetails.doInBackground(EditProductActivity.java:225)
01-16 19:20:29.446:E/AndroidRuntime(24403):在com.example.androidhive.EditProductActivity$SaveProductDetails.doInBackground(EditProductActivity.java:1)
01-16 19:20:29.446:E/AndroidRuntime(24403):在android.os.AsyncTask$2.call(AsyncTask.java:288)
01-16 19:20:29.446:E/AndroidRuntime(24403):在java.util.concurrent.FutureTask.run(FutureTask.java:237)
01-16 19:20:29.446:E/AndroidRuntime(24403):。。。3个以上
01-16 19:20:30.019:E/WindowManager(24403):android.view.WindowLeaked:Activity com.example.androidhive.EditProductActivity泄漏了最初添加到此处的window com.android.internal.policy.impl.PhoneWindow$DecorView{421bbd78 V.E..R..ID 0,0-684192}
01-16 19:20:30.019:E/WindowManager(24403):在android.view.ViewRootImpl。(ViewRootImpl.java:374)
01-16 19:20:30.019:E/WindowManager(24403):在android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:248)
01-16 19:20:30.019:E/WindowManager(24403):在android.view.WindowManagerImpl.addView(WindowManagerImpl.java:69)
01-16 19:20:30.019:E/WindowManager(24403):在android.app.Dialog.show(Dialog.java:286)
01-16 19:20:30.019:E/WindowManager(24403):位于com.example.androidhive.EditProductActivity$SaveProductDetails.onPreExecute(EditProductActivity.java:202)
01-16 19:20:30.019:E/WindowManager(24403):位于android.os.AsyncTask.executeOnExecutor(AsyncTask.java:587)
01-16 19:20:30.019:E/WindowManager(24403):在android.os.AsyncTask.execute(AsyncTask.java:535)
01-16 19:20:30.019:E/WindowManager(24403):位于com.example.androidhive.EditProductActivity.onClick(EditProductActivity.java:87)
01-16 19:20:30.019:E/WindowManager(24403):位于java.lang.reflect.Method.invokenactive(本机方法)
01-16 19:20:30.019:E/WindowManager(24403):位于java.lang.reflect.Method.invoke(Method.java:515)
01-16 19:20:30.019:E/WindowManager(24403):在android.view.view$1.onClick(view.java:3837)
01-16 19:20:30.019:E/WindowManager(24403):在android.view.view.performClick(view.java:4452)上
01-16 19:20:30.019:E/WindowManager(24403):在android.view.view$PerformClick.run(view.java:18498)
01-16 19:20:30.019:E/WindowManager(24403):位于android.os.Handler.handleCallback(Handler.java:733)
01-16 19:20:30.019:E/WindowManager(24403):位于android.os.Handler.dispatchMessage(Handler.java:95)
01-16 19:20:30.019:E/WindowManager(24403):位于android.os.Looper.loop(Looper.java:137)
01-16 19:20:30.019:E/WindowManager(24403):位于android.app.ActivityThread.main(ActivityThread.java:5083)
01-16 19:20:30.019:E/WindowManager(24403):位于java.lang.reflect.Method.invokenactive(本机方法)
01-16 19:20:30.019:E/WindowManager(24403):位于java.lang.reflect.Method.invoke(Method.java:515)
01-16 19:20:30.019:E/WindowManager(24403):位于com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:777)
01-16 19:20:30.019:E/WindowManager(24403):位于com.android.internal.os.ZygoteInit.main(ZygoteInit.java:593)
01-16 19:20:30.019:E/WindowManager(24403):在dalvik.system.NativeStart.main(本机方法)
如果第一行对应于第225行,则NullPointerException可能是因为微调器中未选择任何内容。尝试:
String pavement = (spinpavement!=null)?String.valueOf(spinpavement.getSelectedItem()):"NULL Pavement";
String traffic = (spintraffic!=null)?String.valueOf(spintraffic.getSelectedItem()):"NULL Traffic";
String environment = (spinenviro!=null)?String.valueOf(spinenviro.getSelectedItem()):"NULL Environment";
您将能够意识到是否存在一些问题或丢失了对任何成员变量的引用
希望有帮助。在获取所选字符串之前,请检查它
if(spinner.getselectedpostion!=0)
{`
`
String selected_string= spinner.getSelectedItem().toString();
}`enter code here`
到底哪一行是225?如果这是你发布的其中一行,那么显示你如何/在哪里初始化
微调器
,我猜那些其他变量是微调器
是的,这是行,是的,它们是微调器OK,但是你在哪里/如何初始化它们?你能发布它吗?因为它们必须是null
。或者getSelectedItem()
返回null
是的,这就是问题所在哈哈,谢谢,我想我一定是删除了初始化行。再次谢谢你,没问题。很高兴我能帮忙
if(spinner.getselectedpostion!=0)
{`
`
String selected_string= spinner.getSelectedItem().toString();
}`enter code here`