我的Android应用程序将无法在2设备上运行，但适用于模拟器 [英] My android application won't run on 2 devices but works on emulator
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问题描述
我正在写的登录界面后立即显示谷歌地图的应用程序。
构建目标设定为2.3和我的设备上运行：
I'm writing an application that displays Google Map right after the login screen. The Build Target is set to 2.3 and my devices run:
1）三星Galaxy王牌（2.3.4）
2）Motorolla的Xoom（3.1）
1) Samsung Galaxy Ace (2.3.4) 2) Motorolla Xoom (3.1)
我尽我的Android模拟器应用程序，它运行正常。登录和地图显示。
I try my app on the Android emulator and it runs fine. Login and map display.
当我通过我的计算机上的USB连接两个设备，并选择他们来运行应用程序（注：旁边的构建目标选择时有一个橙色的警告标志），在登录屏幕出现就好了，当我点击登录在应用程序崩溃的Motorolla和冻结和了一会儿，然后做我的银河王牌什么都没有。
When I connected both devices via USB on my computer and selected them to run the application (note: there was an orange warning sign next to the build target when selecting), the login screen appears just fine and when I click "Sign In" the application crashes on Motorolla and freezes and for a while and then does nothing on my Galaxy Ace.
请注意，它们既可以连接到互联网。
Note that they can both connect to the internet.
的logcat的设备，同时贯穿USB连接的应用程序：
Logcat for the devices while running the app through USB connection:
1）三星Galaxy王牌
1) Samsung Galaxy Ace
04-06 00:24:21.599: I/InputReader(162): dispatchTouch::touch event's action is 0
04-06 00:24:21.599: I/InputDispatcher(162): Delivering touch to current input target: action: 0, channel '40796920 com.cylbs.android/com.cylbs.android.MainActivity (server)'
04-06 00:24:21.699: I/InputReader(162): dispatchTouch::touch event's action is 1
04-06 00:24:21.699: I/InputDispatcher(162): Delivering touch to current input target: action: 1, channel '40796920 com.cylbs.android/com.cylbs.android.MainActivity (server)'
04-06 00:24:27.709: W/PowerManagerService(162): Timer 0x3->0x3|0x1
04-06 00:24:28.559: D/BatteryService(162): update start
04-06 00:24:28.569: D/BatteryService(162): update start
04-06 00:24:28.579: D/BatteryService(162): update start
2）的Xoom Motorolla
2) Motorolla Xoom
04-06 00:27:13.490: D/AndroidRuntime(3163): Shutting down VM
04-06 00:27:13.490: W/dalvikvm(3163): threadid=1: thread exiting with uncaught exception (group=0x40154760)
04-06 00:27:13.510: E/AndroidRuntime(3163): FATAL EXCEPTION: main
04-06 00:27:13.510: E/AndroidRuntime(3163): android.os.NetworkOnMainThreadException
04-06 00:27:13.510: E/AndroidRuntime(3163): at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1077)
04-06 00:27:13.510: E/AndroidRuntime(3163): at dalvik.system.BlockGuard$WrappedNetworkSystem.connect(BlockGuard.java:368)
04-06 00:27:13.510: E/AndroidRuntime(3163): at org.apache.harmony.luni.net.PlainSocketImpl.connect(PlainSocketImpl.java:208)
04-06 00:27:13.510: E/AndroidRuntime(3163): at org.apache.harmony.luni.net.PlainSocketImpl.connect(PlainSocketImpl.java:431)
04-06 00:27:13.510: E/AndroidRuntime(3163): at java.net.Socket.connect(Socket.java:901)
04-06 00:27:13.510: E/AndroidRuntime(3163): at org.apache.harmony.luni.internal.net.www.protocol.http.HttpConnection.<init>(HttpConnection.java:75)
04-06 00:27:13.510: E/AndroidRuntime(3163): at org.apache.harmony.luni.internal.net.www.protocol.http.HttpConnection.<init>(HttpConnection.java:48)
04-06 00:27:13.510: E/AndroidRuntime(3163): at org.apache.harmony.luni.internal.net.www.protocol.http.HttpConnection$Address.connect(HttpConnection.java:304)
04-06 00:27:13.510: E/AndroidRuntime(3163): at org.apache.harmony.luni.internal.net.www.protocol.http.HttpConnectionPool.get(HttpConnectionPool.java:89)
04-06 00:27:13.510: E/AndroidRuntime(3163): at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnectionImpl.getHttpConnection(HttpURLConnectionImpl.java:292)
04-06 00:27:13.510: E/AndroidRuntime(3163): at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnectionImpl.makeConnection(HttpURLConnectionImpl.java:274)
04-06 00:27:13.510: E/AndroidRuntime(3163): at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnectionImpl.connect(HttpURLConnectionImpl.java:217)
04-06 00:27:13.510: E/AndroidRuntime(3163): at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnectionImpl.getOutputStream(HttpURLConnectionImpl.java:624)
04-06 00:27:13.510: E/AndroidRuntime(3163): at com.cylbs.android.MainActivity.tryLogin(MainActivity.java:65)
04-06 00:27:13.510: E/AndroidRuntime(3163): at com.cylbs.android.MainActivity$1.onClick(MainActivity.java:41)
04-06 00:27:13.510: E/AndroidRuntime(3163): at android.view.View.performClick(View.java:3110)
04-06 00:27:13.510: E/AndroidRuntime(3163): at android.view.View$PerformClick.run(View.java:11928)
04-06 00:27:13.510: E/AndroidRuntime(3163): at android.os.Handler.handleCallback(Handler.java:587)
04-06 00:27:13.510: E/AndroidRuntime(3163): at android.os.Handler.dispatchMessage(Handler.java:92)
04-06 00:27:13.510: E/AndroidRuntime(3163): at android.os.Looper.loop(Looper.java:132)
04-06 00:27:13.510: E/AndroidRuntime(3163): at android.app.ActivityThread.main(ActivityThread.java:4025)
04-06 00:27:13.510: E/AndroidRuntime(3163): at java.lang.reflect.Method.invokeNative(Native Method)
04-06 00:27:13.510: E/AndroidRuntime(3163): at java.lang.reflect.Method.invoke(Method.java:491)
04-06 00:27:13.510: E/AndroidRuntime(3163): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:841)
04-06 00:27:13.510: E/AndroidRuntime(3163): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:599)
04-06 00:27:13.510: E/AndroidRuntime(3163): at dalvik.system.NativeStart.main(Native Method)
这是我的code为在MainActivity仅在登录和家庭活动这是哪里的地图显示：
This is my code for the MainActivity which is only Login and the Home activity which is where the map appears:
MainActivity：
MainActivity:
package com.cylbs.android;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.net.HttpURLConnection;
import java.net.URL;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity extends Activity {
private Button login;
private EditText username, password;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
login = (Button) findViewById(R.id.logIn);
username = (EditText) findViewById(R.id.username);
password = (EditText) findViewById(R.id.password);
login.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
String mUsername = username.getText().toString();
String mPassword = password.getText().toString();
tryLogin(mUsername, mPassword);
}
});
}
public boolean tryLogin(String mUsername, String mPassword)
{
HttpURLConnection connection;
OutputStreamWriter request = null;
URL url = null;
String response = null;
String parameters = "username="+mUsername+"&password="+mPassword;
final TextView result = (TextView) findViewById(R.id.result);
try
{
url = new URL("http://10.0.2.2/database_test/index.php");
connection = (HttpURLConnection) url.openConnection();
connection.setDoOutput(true);
connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
connection.setRequestMethod("POST");
request = new OutputStreamWriter(connection.getOutputStream());
request.write(parameters);
request.flush();
request.close();
String line = "";
InputStreamReader isr = new InputStreamReader(connection.getInputStream());
BufferedReader reader = new BufferedReader(isr);
StringBuilder sb = new StringBuilder();
while ((line = reader.readLine()) != null)
{
sb.append(line);
}
// Response from server after login process will be stored in response variable.
response = sb.toString();
// You can perform UI operations here
Toast.makeText(this,"."+ response +".", 0).show();
if (response.equals("Success"))
{
Session obj = new Session();
obj.setUsername(mUsername);
Intent myIntent = new Intent(MainActivity.this, Home.class);
startActivity(myIntent);
result.setText("Login successful");
}
else
{
result.setText("Login fail. Please try again");
}
isr.close();
reader.close();
}
catch(IOException e)
{
// Error
}
return true;
}
}
和家庭活动（延伸MapActivity）
And the Home activity (extends MapActivity)
package com.cylbs.android;
import com.google.android.maps.GeoPoint;
import com.google.android.maps.MapActivity;
import com.google.android.maps.MapController;
import com.google.android.maps.MapView;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
public class Home extends MapActivity {
MapController mControl;
GeoPoint geoP;
MapView mapV;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.home);
mapV = (MapView) findViewById(R.id.mapView);
mapV.displayZoomControls(true);
mapV.setBuiltInZoomControls(true);
double lat = 40.8;
double longi = -96.666;
geoP = new GeoPoint((int) (lat *1E6), (int) (longi *1E6));
mControl = mapV.getController();
mControl.animateTo(geoP);
mControl.setZoom(13);
Button emergencies = (Button) findViewById(R.id.emergencyButton);
emergencies.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent myIntent = new Intent(Home.this, EmergencyList.class);
Home.this.startActivity(myIntent);
}
});
Button disruptions = (Button) findViewById(R.id.disruptionButton);
disruptions.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent myIntent2 = new Intent(Home.this, DisruptionList.class);
startActivity(myIntent2);
}
});
}
@Override
protected boolean isRouteDisplayed() {
// TODO Auto-generated method stub
return false;
}
}
任何想法？思考？
这就是现在。
谢谢你这么多。
Any ideas? Thoughts? It's all for now. Thank you so much.
P.S。
我是一个新的Android开发者。
P.S. I'm a new android developer.
推荐答案
在情况下，任何人有同样的问题，我想我已经找到了解决办法。
In case anyone else has the same issue I think I have found a solution.
我LogCat中查找错误：
I looked up the error in LogCat:
04-06 00:27:13.510: E/AndroidRuntime(3163): android.os.NetworkOnMainThreadException
和根据此的http://developer.android.com/reference/android/os/NetworkOnMainThreadException.html
似乎有些（更新）的Android版本不允许在MainActivity或类似的东西互联网的连接请求。
it seems that some (newer) android versions don't allow internet connection requests in the MainActivity or something like that.
虽然我打靶Android版本10（2.3）我仍然有错误，所以我改变了我的项目目标8版本，它似乎是现在的好工作。
Even though I was targetting android version 10 (2.3) I still had the error so I changed my project target to version 8 and it seems to work okay now.
这篇关于我的Android应用程序将无法在2设备上运行，但适用于模拟器的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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