我正在构建一个由用户登录和注册组成的应用程序，但每次我在模拟器上测试它都会收到强制关闭。以下是我在log cat中收到的错误：
08-14 14:06:28.853: D/dalvikvm(828): GC_FOR_ALLOC freed 108K, 3% free 8262K/8455K, paused 89ms, total 92ms
08-14 14:06:29.273: I/Choreographer(828): Skipped 72 frames! The application may be doing too much work on its main thread.
08-14 14:06:29.373: D/gralloc_goldfish(828): Emulator without GPU emulation detected.
08-14 14:06:29.373: D/dalvikvm(828): GC_CONCURRENT freed 5K, 3% free 8660K/8839K, paused 110ms+28ms, total 365ms
08-14 14:06:29.902: I/Choreographer(828): Skipped 85 frames! The application may be doing too much work on its main thread.
08-14 14:06:32.533: D/dalvikvm(828): GC_CONCURRENT freed 32K, 3% free 9027K/9223K, paused 81ms+111ms, total 343ms
08-14 14:06:32.813: I/Choreographer(828): Skipped 71 frames! The application may be doing too much work on its main thread.
08-14 14:06:33.303: I/Choreographer(828): Skipped 38 frames! The application may be doing too much work on its main thread.
08-14 14:06:39.854: D/InputEventConsistencyVerifier(828): KeyEvent: ACTION_UP but key was not down.
08-14 14:06:39.854: D/InputEventConsistencyVerifier(828): in android.widget.EditText@412b2f68
08-14 14:06:39.854: D/InputEventConsistencyVerifier(828): 0: sent at 1614282000000, KeyEvent { action=ACTION_UP, keyCode=KEYCODE_M, scanCode=50, metaState=0, flags=0x8, repeatCount=0, eventTime=1614282, downTime=1614282, deviceId=0, source=0x301 }
08-14 14:06:39.874: D/InputEventConsistencyVerifier(828): KeyEvent: ACTION_UP but key was not down.
08-14 14:06:39.874: D/InputEventConsistencyVerifier(828): in android.widget.EditText@412b2f68
08-14 14:06:39.874: D/InputEventConsistencyVerifier(828): 0: sent at 1614392000000, KeyEvent { action=ACTION_UP, keyCode=KEYCODE_TAB, scanCode=15, metaState=0, flags=0x8, repeatCount=0, eventTime=1614392, downTime=1614282, deviceId=0, source=0x301 }
08-14 14:06:39.874: D/InputEventConsistencyVerifier(828): -- recent events --
08-14 14:06:39.874: D/InputEventConsistencyVerifier(828): 1: sent at 1614282000000, (unhandled) KeyEvent { action=ACTION_UP, keyCode=KEYCODE_M, scanCode=50, metaState=0, flags=0x80000008, repeatCount=0, eventTime=1614282, downTime=1614282, deviceId=0, source=0x301 }
08-14 14:07:02.362: D/AndroidRuntime(828): Shutting down VM
08-14 14:07:02.362: W/dalvikvm(828): threadid=1: thread exiting with uncaught exception (group=0x40a13300)
**08-14 14:07:02.472: E/AndroidRuntime(828): FATAL EXCEPTION: main
08-14 14:07:02.472: E/AndroidRuntime(828): android.os.NetworkOnMainThreadException
08-14 14:07:02.472: E/AndroidRuntime(828): at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1117)
08-14 14:07:02.472: E/AndroidRuntime(828): at libcore.io.BlockGuardOs.connect(BlockGuardOs.java:84)
08-14 14:07:02.472: E/AndroidRuntime(828): at libcore.io.IoBridge.connectErrno(IoBridge.java:127)
08-14 14:07:02.472: E/AndroidRuntime(828): at libcore.io.IoBridge.connect(IoBridge.java:112)
08-14 14:07:02.472: E/AndroidRuntime(828): at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:192)
08-14 14:07:02.472: E/AndroidRuntime(828): at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:459)
08-14 14:07:02.472: E/AndroidRuntime(828): at java.net.Socket.connect(Socket.java:842)
08-14 14:07:02.472: E/AndroidRuntime(828): at org.apache.http.conn.scheme.PlainSocketFactory.connectSocket(PlainSocketFactory.java:119)
08-14 14:07:02.472: E/AndroidRuntime(828): at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:144)
08-14 14:07:02.472: E/AndroidRuntime(828): at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:164)
08-14 14:07:02.472: E/AndroidRuntime(828): at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:119)
08-14 14:07:02.472: E/AndroidRuntime(828): at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:360)
08-14 14:07:02.472: E/AndroidRuntime(828): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:555)
08-14 14:07:02.472: E/AndroidRuntime(828): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:487)
08-14 14:07:02.472: E/AndroidRuntime(828): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:465)
08-14 14:07:02.472: E/AndroidRuntime(828): at library.JSONParser.getJSONFromUrl(JSONParser.java:41)
08-14 14:07:02.472: E/AndroidRuntime(828): at library.UserFunctions.loginUser(UserFunctions.java:40)
08-14 14:07:02.472: E/AndroidRuntime(828): at com.thryfting.www.LoginActivity.onClick(LoginActivity.java:66)
08-14 14:07:02.472: E/AndroidRuntime(828): at android.view.View.performClick(View.java:4084)
08-14 14:07:02.472: E/AndroidRuntime(828): at android.view.View$PerformClick.run(View.java:16966)
08-14 14:07:02.472: E/AndroidRuntime(828): at android.os.Handler.handleCallback(Handler.java:615)
08-14 14:07:02.472: E/AndroidRuntime(828): at android.os.Handler.dispatchMessage(Handler.java:92)
08-14 14:07:02.472: E/AndroidRuntime(828): at android.os.Looper.loop(Looper.java:137)
08-14 14:07:02.472: E/AndroidRuntime(828): at android.app.ActivityThread.main(ActivityThread.java:4745)
08-14 14:07:02.472: E/AndroidRuntime(828): at java.lang.reflect.Method.invokeNative(Native Method)
08-14 14:07:02.472: E/AndroidRuntime(828): at java.lang.reflect.Method.invoke(Method.java:511)
08-14 14:07:02.472: E/AndroidRuntime(828): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
08-14 14:07:02.472: E/AndroidRuntime(828): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
08-14 14:07:02.472: E/AndroidRuntime(828): at dalvik.system.NativeStart.main(Native Method)**
更新了注册活动代码：
package com.thryfting.www;
import org.json.JSONException;
import org.json.JSONObject;
import library.DatabaseHandler;
import library.UserFunctions;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import com.actionbarsherlock.app.SherlockActivity;
public class RegisterActivity extends SherlockActivity implements OnClickListener{
Button btnRegister;
EditText inputFullName;
EditText inputEmail;
EditText inputPassword;
TextView registerErrorMsg;
TextView loginScreen;
//JSON Response node names
private static String KEY_SUCCESS = "success";
private static String KEY_ERROR = "error";
private static String KEY_ERROR_MSG = "error_msg";
private static String KEY_UID = "uid";
private static String KEY_NAME = "name";
private static String KEY_EMAIL = "email";
private static String KEY_CREATED_AT = "created_at";
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.register);
loginScreen = (TextView) findViewById(R.id.link_to_login);
inputEmail = (EditText) findViewById(R.id.etemailSignup);
inputPassword = (EditText) findViewById(R.id.etPasswordSignup);
inputFullName = (EditText) findViewById(R.id.etFullnameSignup);
btnRegister = (Button) findViewById(R.id.btnRegister);
registerErrorMsg = (TextView) findViewById(R.id.register_error);
loginScreen.setOnClickListener(this);
btnRegister.setOnClickListener(this);
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
switch(v.getId()){
case R.id.btnRegister:
new register().execute(KEY_SUCCESS);
break;
case R.id.link_to_login:
Intent i = new Intent(getApplicationContext(), LoginActivity.class);
startActivity(i);
//Close Registration View
finish();
break;
}
}
public class register extends AsyncTask<String, Integer, String>{
@Override
protected String doInBackground(String... params) {
// TODO Auto-generated method stub
String name = inputFullName.getText().toString();
String email = inputEmail.getText().toString();
String password = inputPassword.getText().toString();
UserFunctions userFunction = new UserFunctions();
JSONObject json = userFunction.registerUser(name, email, password);
try{
if(json.getString(KEY_SUCCESS) != null){
registerErrorMsg.setText("");
String res = json.getString(KEY_SUCCESS);
if(Integer.parseInt(res) == 1){
//user successfully registered
// Store user details in SQLite Database
DatabaseHandler db = new DatabaseHandler(getApplicationContext());
JSONObject json_user = json.getJSONObject("user");
//Clear all previous data in database
userFunction.logoutUser(getApplicationContext());
db.addUser(json_user.getString(KEY_NAME), json_user.getString(KEY_EMAIL), json.getString(KEY_UID), json_user.getString(KEY_CREATED_AT));
}else{
//Error in registration
registerErrorMsg.setText("Error occured in registration");
}
}
} catch(JSONException e){
e.printStackTrace();
} finally{
//Launch Dashboard
Intent dashboard = new Intent (getApplicationContext(), Timeline.class);
//Close all views before launching Dashboard
dashboard.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
//Close registration screen
finish();
}
return null;
}
}
}
以下新错误消息：
08-15 14:53:32.940: W/dalvikvm(865): threadid=11: thread exiting with uncaught exception (group=0x40a13300)
08-15 14:53:33.060: E/AndroidRuntime(865): FATAL EXCEPTION: AsyncTask #1
08-15 14:53:33.060: E/AndroidRuntime(865): java.lang.RuntimeException: An error occured while executing doInBackground()
08-15 14:53:33.060: E/AndroidRuntime(865): at android.os.AsyncTask$3.done(AsyncTask.java:299)
08-15 14:53:33.060: E/AndroidRuntime(865): at java.util.concurrent.FutureTask$Sync.innerSetException(FutureTask.java:273)
08-15 14:53:33.060: E/AndroidRuntime(865): at java.util.concurrent.FutureTask.setException(FutureTask.java:124)
08-15 14:53:33.060: E/AndroidRuntime(865): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:307)
08-15 14:53:33.060: E/AndroidRuntime(865): at java.util.concurrent.FutureTask.run(FutureTask.java:137)
08-15 14:53:33.060: E/AndroidRuntime(865): at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
08-15 14:53:33.060: E/AndroidRuntime(865): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
08-15 14:53:33.060: E/AndroidRuntime(865): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
08-15 14:53:33.060: E/AndroidRuntime(865): at java.lang.Thread.run(Thread.java:856)
08-15 14:53:33.060: E/AndroidRuntime(865): Caused by: java.lang.IllegalStateException: Target host must not be null, or set in parameters. scheme=null, host=null, path=register
08-15 14:53:33.060: E/AndroidRuntime(865): at org.apache.http.impl.client.DefaultRequestDirector.determineRoute(DefaultRequestDirector.java:591)
08-15 14:53:33.060: E/AndroidRuntime(865): at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:293)
08-15 14:53:33.060: E/AndroidRuntime(865): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:555)
08-15 14:53:33.060: E/AndroidRuntime(865): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:487)
08-15 14:53:33.060: E/AndroidRuntime(865): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:465)
08-15 14:53:33.060: E/AndroidRuntime(865): at library.JSONParser.getJSONFromUrl(JSONParser.java:41)
08-15 14:53:33.060: E/AndroidRuntime(865): at library.UserFunctions.registerUser(UserFunctions.java:63)
08-15 14:53:33.060: E/AndroidRuntime(865): at com.thryfting.www.RegisterActivity$register.doInBackground(RegisterActivity.java:89)
08-15 14:53:33.060: E/AndroidRuntime(865): at com.thryfting.www.RegisterActivity$register.doInBackground(RegisterActivity.java:1)
08-15 14:53:33.060: E/AndroidRuntime(865): at android.os.AsyncTask$2.call(AsyncTask.java:287)
08-15 14:53:33.060: E/AndroidRuntime(865): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
08-15 14:53:33.060: E/AndroidRuntime(865): ... 5 more
08-15 14:53:34.812: I/Choreographer(865): Skipped 93 frames! The application may be doing too much work on its main thread.
08-15 14:53:36.512: I/Process(865): Sending signal. PID: 865 SIG: 9
public JSONObject registerUser(String name, String email, String password){
//building Parameters
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("tag", register_tag));
params.add(new BasicNameValuePair("name", name));
params.add(new BasicNameValuePair("email", email));
params.add(new BasicNameValuePair("password", password));
//Getting JSON object
JSONObject json = jsonParser.getJSONFromUrl(register_tag, params);
//return json
return json;
}
答案 0 :(得分：3)
您收到StrictMode违规行为。这意味着您正在UI线程上执行某些操作。因此
的原因android.os.NetworkOnMainThreadException
从您的其他日志中可以看到您正在执行网络请求。 确保HTTP请求包含在AsyncTask（或类似的东西）中
答案 1 :(得分：1)
您似乎正在尝试在主线程上进行登录和注册。首先，这是不好的做法，并且无法在最近的API级别上完成。 您需要做的就是在单独的线程中建立您的网络连接，无论是AsyncTask还是只是一个普通的Thread（）
作为一个例子：
使用此
public void login()
{
new Thread(new Runnable() {
@Override
public void run() {
//your network connection goes here
}
}).start();
}
而不是：
public void login()
{
//your network connection goes here
}
答案 2 :(得分：0)
尝试在具有互联网连接功能的手机中查看相同内容。 logcat还显示模拟器没有GPS连接。