我有一个loginActivity会将我重定向到userViewActivity，但是我遇到了这些错误：
10-03 00:50:11.628: E/WindowManager(1820): Activity com.example.mediastore.LoginActivity has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView{b558aee8 V.E..... R.....ID 0,0-456,144} that was originally added here
10-03 00:50:11.628: E/WindowManager(1820): android.view.WindowLeaked: Activity com.example.mediastore.LoginActivity has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView{b558aee8 V.E..... R.....ID 0,0-456,144} that was originally added here
10-03 00:50:11.628: E/WindowManager(1820): at android.view.ViewRootImpl.<init>(ViewRootImpl.java:354)
10-03 00:50:11.628: E/WindowManager(1820): at android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:216)
10-03 00:50:11.628: E/WindowManager(1820): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:69)
10-03 00:50:11.628: E/WindowManager(1820): at android.app.Dialog.show(Dialog.java:281)
10-03 00:50:11.628: E/WindowManager(1820): at com.example.mediastore.LoginActivity$userLogin.onPreExecute(LoginActivity.java:80)
10-03 00:50:11.628: E/WindowManager(1820): at android.os.AsyncTask.executeOnExecutor(AsyncTask.java:586)
10-03 00:50:11.628: E/WindowManager(1820): at android.os.AsyncTask.execute(AsyncTask.java:534)
10-03 00:50:11.628: E/WindowManager(1820): at com.example.mediastore.LoginActivity$1.onClick(LoginActivity.java:63)
10-03 00:50:11.628: E/WindowManager(1820): at android.view.View.performClick(View.java:4202)
10-03 00:50:11.628: E/WindowManager(1820): at android.view.View$PerformClick.run(View.java:17340)
10-03 00:50:11.628: E/WindowManager(1820): at android.os.Handler.handleCallback(Handler.java:725)
10-03 00:50:11.628: E/WindowManager(1820): at android.os.Handler.dispatchMessage(Handler.java:92)
10-03 00:50:11.628: E/WindowManager(1820): at android.os.Looper.loop(Looper.java:137)
10-03 00:50:11.628: E/WindowManager(1820): at android.app.ActivityThread.main(ActivityThread.java:5039)
10-03 00:50:11.628: E/WindowManager(1820): at java.lang.reflect.Method.invokeNative(Native Method)
10-03 00:50:11.628: E/WindowManager(1820): at java.lang.reflect.Method.invoke(Method.java:511)
10-03 00:50:11.628: E/WindowManager(1820): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
10-03 00:50:11.628: E/WindowManager(1820): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
10-03 00:50:11.628: E/WindowManager(1820): at dalvik.system.NativeStart.main(Native Method)
这是loginActivity：
package com.example.mediastore;
import java.util.ArrayList;
import java.util.List;
import org.apache.http.NameValuePair;
import org.apache.http.message.BasicNameValuePair;
import org.json.JSONException;
import org.json.JSONObject;
import com.example.mediastore.JSONParser;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.app.ProgressDialog;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Bundle;
import android.text.InputFilter.LengthFilter;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.Window;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
public class LoginActivity extends Activity {
Button login;
EditText inputusername;
EditText inputpassword;
private static String url_users = "http://10.0.2.2/mediastore/android/usersLogin.php";
private ProgressDialog pDialog;
JSONParser jsonParser = new JSONParser();
private static final String TAG_SUCCESS = "success";
@Override
public void onCreate(Bundle savedInstanceState) {
this.requestWindowFeature(Window.FEATURE_NO_TITLE);
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login);
login = (Button) findViewById(R.id.loginbtn);
inputusername = (EditText) findViewById(R.id.username);
inputpassword = (EditText) findViewById(R.id.password);
login.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
if(v == login) {
login.setBackgroundDrawable(getResources().getDrawable(R.drawable.button2));
}
String u = inputusername.getText().toString();
String p = inputpassword.getText().toString();
if(u.equals("")||p.equals(""))
Toast.makeText(getApplicationContext(), "Please fill these two fields", Toast.LENGTH_SHORT).show();
else
new userLogin().execute();
}
});
}
class userLogin extends AsyncTask<String, String, String> {
/**
* Before starting background thread Show Progress Dialog
* */
@Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(LoginActivity.this);
pDialog.setMessage("Logging user..");
pDialog.setIndeterminate(false);
pDialog.setCancelable(true);
pDialog.show();
}
/**
* Creating product
* */
@SuppressLint("ShowToast")
protected String doInBackground(String... args) {
String username = inputusername.getText().toString();
String password = inputpassword.getText().toString();
// Building Parameters
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("username", username));
params.add(new BasicNameValuePair("password", password));
// getting JSON Object
// Note that create product url accepts POST method
JSONObject json = jsonParser.makeHttpRequest(url_users,
"POST", params);
// check log cat fro response
Log.d("Login Response", json.toString());
// check for success tag
try {
int success = json.getInt(TAG_SUCCESS);
if (success == 1) {
// successfully created product
Intent i = new Intent(getApplicationContext(), UserViewActivity.class);
startActivity(i);
// closing this screen
finish();
} else {
// failed to create product
}
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
/**
* After completing background task Dismiss the progress dialog
* **/
protected void onPostExecute(String file_url) {
// dismiss the dialog once done
pDialog.dismiss();
}
}
}
我对android不熟悉，你能帮我找到解决这个问题的方法吗？
新错误：
10-03 01:30:20.138: W/dalvikvm(1831): threadid=20: thread exiting with uncaught exception (group=0xb4c90908)
10-03 01:30:20.267: D/dalvikvm(1831): GC_CONCURRENT freed 399K, 6% free 8620K/9132K, paused 5ms+27ms, total 114ms
10-03 01:30:20.267: E/AndroidRuntime(1831): FATAL EXCEPTION: AsyncTask #3
10-03 01:30:20.267: E/AndroidRuntime(1831): java.lang.RuntimeException: An error occured while executing doInBackground()
10-03 01:30:20.267: E/AndroidRuntime(1831): at android.os.AsyncTask$3.done(AsyncTask.java:299)
10-03 01:30:20.267: E/AndroidRuntime(1831): at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:352)
10-03 01:30:20.267: E/AndroidRuntime(1831): at java.util.concurrent.FutureTask.setException(FutureTask.java:219)
10-03 01:30:20.267: E/AndroidRuntime(1831): at java.util.concurrent.FutureTask.run(FutureTask.java:239)
10-03 01:30:20.267: E/AndroidRuntime(1831): at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
10-03 01:30:20.267: E/AndroidRuntime(1831): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
10-03 01:30:20.267: E/AndroidRuntime(1831): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
10-03 01:30:20.267: E/AndroidRuntime(1831): at java.lang.Thread.run(Thread.java:856)
10-03 01:30:20.267: E/AndroidRuntime(1831): Caused by: android.content.ActivityNotFoundException: Unable to find explicit activity class {com.example.mediastore/com.example.mediastore.UserViewActivity}; have you declared this activity in your AndroidManifest.xml?
10-03 01:30:20.267: E/AndroidRuntime(1831): at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1618)
10-03 01:30:20.267: E/AndroidRuntime(1831): at android.app.Instrumentation.execStartActivity(Instrumentation.java:1417)
10-03 01:30:20.267: E/AndroidRuntime(1831): at android.app.Activity.startActivityForResult(Activity.java:3370)
10-03 01:30:20.267: E/AndroidRuntime(1831): at android.app.Activity.startActivityForResult(Activity.java:3331)
10-03 01:30:20.267: E/AndroidRuntime(1831): at android.app.Activity.startActivity(Activity.java:3566)
10-03 01:30:20.267: E/AndroidRuntime(1831): at android.app.Activity.startActivity(Activity.java:3534)
10-03 01:30:20.267: E/AndroidRuntime(1831): at com.example.mediastore.LoginActivity$userLogin.doInBackground(LoginActivity.java:120)
10-03 01:30:20.267: E/AndroidRuntime(1831): at com.example.mediastore.LoginActivity$userLogin.doInBackground(LoginActivity.java:1)
10-03 01:30:20.267: E/AndroidRuntime(1831): at android.os.AsyncTask$2.call(AsyncTask.java:287)
10-03 01:30:20.267: E/AndroidRuntime(1831): at java.util.concurrent.FutureTask.run(FutureTask.java:234)
10-03 01:30:20.267: E/AndroidRuntime(1831): ... 4 more
答案 0 :(得分：1)
我认为问题是您在finish()中呼叫doInBackground()而未正确关闭ProgressDialog。尝试覆盖您的finish()，如果已打开则将其关闭
@Override
public void finish()
{
if (pDialog != null && pDialog.isShowing())
{
pDialog.dismiss();
}
}
答案 1 :(得分：0)
视图应该在Activity类而不是子类中声明，在设置监听器之前，将这些代码行从onPreExecute（）方法移动到onCreate（）：
pDialog = new ProgressDialog(LoginActivity.this);
pDialog.setMessage("Logging user..");
pDialog.setIndeterminate(false);
pDialog.setCancelable(true);
然后在上方显示使用AsyncTask
new userLogin().execute();的对话框
pDialog.show();
看起来@CodeMagic得到了它：尝试在这样的后台方法中改变你的做法。请记住，布尔标志位于doInBackground方法之上：
boolean startNewActivity = false;
protected String doInBackground(String... args) {
String username = inputusername.getText().toString();
String password = inputpassword.getText().toString();
// Building Parameters
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("username", username));
params.add(new BasicNameValuePair("password", password));
// getting JSON Object
// Note that create product url accepts POST method
JSONObject json = jsonParser.makeHttpRequest(url_users,
"POST", params);
// check log cat fro response
Log.d("Login Response", json.toString());
// check for success tag
try {
int success = json.getInt(TAG_SUCCESS);
if (success == 1) {
// successfully created product
startNewActivity=true;
} else {
// failed to create product
}
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
现在像这样
在onPostExecute（）上启动新活动 protected void onPostExecute(String file_url) {
// dismiss the dialog once done
pDialog.dismiss();
if(startNewActivity) {
Intent i = new Intent(getApplicationContext(), UserViewActivity.class);
startActivity(i);
}
}
}
答案 2 :(得分：0)
我认为问题是你在完成进度对话之前就开始了活动。在解除进度对话框后启动活动。首先定义boolean变量，如startActivity
if (success == 1) {
// successfully created product
startActivity=true;
// closing this screen
finish();
} else {
// failed to create product
}
protected void onPostExecute(String file_url) {
// dismiss the dialog once done
pDialog.dismiss();
if(startActivity)
Intent i = new Intent(getApplicationContext(), UserViewActivity.class);
startActivity(i);
}