以下是我的logcat
04-20 00:40:11.688: E/AndroidRuntime(1623): FATAL EXCEPTION: AsyncTask #1
04-20 00:40:11.688: E/AndroidRuntime(1623): Process: com.clip.android, PID: 1623
04-20 00:40:11.688: E/AndroidRuntime(1623): java.lang.RuntimeException: An error occured while executing doInBackground()
04-20 00:40:11.688: E/AndroidRuntime(1623): at android.os.AsyncTask$3.done(AsyncTask.java:300)
04-20 00:40:11.688: E/AndroidRuntime(1623): at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:355)
04-20 00:40:11.688: E/AndroidRuntime(1623): at java.util.concurrent.FutureTask.setException(FutureTask.java:222)
04-20 00:40:11.688: E/AndroidRuntime(1623): at java.util.concurrent.FutureTask.run(FutureTask.java:242)
04-20 00:40:11.688: E/AndroidRuntime(1623): at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231)
04-20 00:40:11.688: E/AndroidRuntime(1623): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
04-20 00:40:11.688: E/AndroidRuntime(1623): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
04-20 00:40:11.688: E/AndroidRuntime(1623): at java.lang.Thread.run(Thread.java:841)
04-20 00:40:11.688: E/AndroidRuntime(1623): Caused by: java.lang.RuntimeException: Can't create handler inside thread that has not called Looper.prepare()
04-20 00:40:11.688: E/AndroidRuntime(1623): at android.os.Handler.<init>(Handler.java:200)
04-20 00:40:11.688: E/AndroidRuntime(1623): at android.os.Handler.<init>(Handler.java:114)
04-20 00:40:11.688: E/AndroidRuntime(1623): at android.widget.Toast$TN.<init>(Toast.java:327)
04-20 00:40:11.688: E/AndroidRuntime(1623): at android.widget.Toast.<init>(Toast.java:92)
04-20 00:40:11.688: E/AndroidRuntime(1623): at android.widget.Toast.makeText(Toast.java:241)
04-20 00:40:11.688: E/AndroidRuntime(1623): at com.clip.android.ClaimRegisterPage$AsyncCallWS.doInBackground(ClaimRegisterPage.java:124)
04-20 00:40:11.688: E/AndroidRuntime(1623): at com.clip.android.ClaimRegisterPage$AsyncCallWS.doInBackground(ClaimRegisterPage.java:1)
04-20 00:40:11.688: E/AndroidRuntime(1623): at android.os.AsyncTask$2.call(AsyncTask.java:288)
04-20 00:40:11.688: E/AndroidRuntime(1623): at java.util.concurrent.FutureTask.run(FutureTask.java:237)
04-20 00:40:11.688: E/AndroidRuntime(1623): ... 4 more
04-20 00:40:11.788: W/EGL_emulation(1623): eglSurfaceAttrib not implemented
04-20 00:40:12.238: E/WindowManager(1623): android.view.WindowLeaked: Activity com.clip.android.ClaimRegisterPage has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView{a56affd0 V.E..... R......D 0,0-571,339} that was originally added here
04-20 00:40:12.238: E/WindowManager(1623): at android.view.ViewRootImpl.<init>(ViewRootImpl.java:346)
04-20 00:40:12.238: E/WindowManager(1623): at android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:248)
04-20 00:40:12.238: E/WindowManager(1623): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:69)
04-20 00:40:12.238: E/WindowManager(1623): at android.app.Dialog.show(Dialog.java:286)
04-20 00:40:12.238: E/WindowManager(1623): at android.app.ProgressDialog.show(ProgressDialog.java:116)
04-20 00:40:12.238: E/WindowManager(1623): at android.app.ProgressDialog.show(ProgressDialog.java:99)
04-20 00:40:12.238: E/WindowManager(1623): at android.app.ProgressDialog.show(ProgressDialog.java:94)
04-20 00:40:12.238: E/WindowManager(1623): at com.clip.android.ClaimRegisterPage$AsyncCallWS.onPreExecute(ClaimRegisterPage.java:133)
04-20 00:40:12.238: E/WindowManager(1623): at android.os.AsyncTask.executeOnExecutor(AsyncTask.java:587)
04-20 00:40:12.238: E/WindowManager(1623): at android.os.AsyncTask.execute(AsyncTask.java:535)
04-20 00:40:12.238: E/WindowManager(1623): at com.clip.android.ClaimRegisterPage.onCreate(ClaimRegisterPage.java:93)
04-20 00:40:12.238: E/WindowManager(1623): at android.app.Activity.performCreate(Activity.java:5231)
04-20 00:40:12.238: E/WindowManager(1623): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
04-20 00:40:12.238: E/WindowManager(1623): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2148)
04-20 00:40:12.238: E/WindowManager(1623): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2233)
04-20 00:40:12.238: E/WindowManager(1623): at android.app.ActivityThread.access$800(ActivityThread.java:135)
04-20 00:40:12.238: E/WindowManager(1623): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
04-20 00:40:12.238: E/WindowManager(1623): at android.os.Handler.dispatchMessage(Handler.java:102)
04-20 00:40:12.238: E/WindowManager(1623): at android.os.Looper.loop(Looper.java:136)
04-20 00:40:12.238: E/WindowManager(1623): at android.app.ActivityThread.main(ActivityThread.java:5001)
04-20 00:40:12.238: E/WindowManager(1623): at java.lang.reflect.Method.invokeNative(Native Method)
04-20 00:40:12.238: E/WindowManager(1623): at java.lang.reflect.Method.invoke(Method.java:515)
04-20 00:40:12.238: E/WindowManager(1623): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:785)
04-20 00:40:12.238: E/WindowManager(1623): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601)
04-20 00:40:12.238: E/WindowManager(1623): at dalvik.system.NativeStart.main(Native Method)
以下是我的代码
package com.clip.android;
import java.util.ArrayList;
import java.util.List;
import android.annotation.SuppressLint;
import android.app.AlertDialog;
import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.Toast;
public class ClaimRegisterPage extends ClaimRegister {
TextView custid;
String customerid;
TextView custname;
String customername;
TextView prdid;
String productid;
String clmtype;
TextView prdname;
String productname;
TextView prdline;
String productline;
TextView pfrom;
String prdfrom;
TextView pto;
String prdto;
TextView sumins;
String suminsured;
String policyId;
LinearLayout searchButtonListner;
ProgressDialog progress;
List<Policy> policys = new ArrayList<Policy>();
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setHeader("Policy Details", true, true);
setContentView(R.layout.activity_claim_register_page);
custid = (TextView) findViewById(R.id.pcustomerid);
custname = (TextView) findViewById(R.id.pcustomername);
prdid = (TextView) findViewById(R.id.pproductid);
prdname = (TextView) findViewById(R.id.pproductname);
prdline = (TextView) findViewById(R.id.pproductline);
pfrom = (TextView) findViewById(R.id.pperiodfrom);
pto = (TextView) findViewById(R.id.pperiodto);
sumins = (TextView) findViewById(R.id.psuminsured);
/* searchButtonListner.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
overridePendingTransition(R.anim.pull_in_left, R.anim.push_out_right);
finish();
}
});
*/
Intent intent = getIntent();
if(intent!=null){
policyId = intent.getStringExtra("userValue");
clmtype = intent.getStringExtra("getclmType");
Log.d("page", "1");
AsyncCallWS task = new AsyncCallWS();
task.execute();
}
}
private class AsyncCallWS extends AsyncTask<String, Void, Void> {
@SuppressLint("NewApi")
@Override
protected Void doInBackground(String... params) {
policys = PolicyWebService.invokeHelloWorldWS(policyId, "getPolicyDetails");
for(Policy policy:policys){
customerid = policy.getID();
customername = policy.getFULLNAME();
productid = policy.getPRODUCTID();
productname = policy.getPRODUCTNAME();
productline = policy.getPRODUCTLINE();
prdfrom = policy.getPERIODFROM();
prdto = policy.getPERIODTO();
suminsured= policy.getTOTALSI();
}
Log.d("Page", "Policys = " +policys.size());
if(policys.size()==0){
Toast.makeText(ClaimRegisterPage.this, "NO records Found", Toast.LENGTH_LONG).show();
}
return null;
}
@Override
protected void onPreExecute() {
Log.d("page", "onpreExecute");
progress = ProgressDialog.show(ClaimRegisterPage.this, "Retrieving Policy Details", "Please Wait.........!");
}
@Override
protected void onPostExecute(Void result) {
Log.d("page", "onpostExecute");
if(policys.size()==0){
AlertDialog.Builder builder = new AlertDialog.Builder(ClaimRegisterPage.this);
builder.setMessage( "Sorry No Record Found").setCancelable(false)
.setPositiveButton("OK", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,int id) {
finish();
}
});
AlertDialog alert = builder.create();
alert.show();
}
progress.dismiss();
Log.d("page", "lolasdsad");
custid.setText(customerid);
custname.setText(customername);
prdid.setText(productid);
prdname.setText(productname);
prdline.setText(productline);
pfrom.setText(prdfrom);
pto.setText(prdto);
sumins.setText(suminsured);
}
}
}
我得到了一些错误，因为新的android我无法追踪它。我收到的错误如上所述我发布了，我也发布了我的代码。任何人都可以帮我解决我的问题..我想我在asyncTask中有问题。它不允许我将数据设置为视图..
答案 0 :(得分：2)
您正在doInBackground（）中显示Toast。所有UI操作都应该在主线程中执行。
答案 1 :(得分：1)
您无法在Toast.makeText()内拨打doInBackground()。
如果您想在doInbackground()执行操作时显示某些内容作为进度更新的一部分，则只需使用某些状态代码调用publishProgress()，然后使用onProgressUpdate()方法即可检查状态代码并相应地显示你想要的Toast。
使用如下：
private static final int NO_RECORD_ERROR = 1;
private class AsyncCallWS extends AsyncTask<String, Integer, Void> {
protected Void doInBackground(URL... urls) {
.....
if(policys.size()==0){
publishProgress(NO_RECORD_ERROR);
}
return totalSize;
}
protected void onProgressUpdate(Integer... progress) {
int progressCode= progress[0];
if (progressCode == NO_RECORD_ERROR) {
Toast.makeText(ClaimRegisterPage.this, "NO records Found", Toast.LENGTH_LONG).show();
}
}