我对StackOverFlow比较陌生，所以如果我在这里格式化某些内容或其他新手错误时出错，请原谅我并随意编辑我的帖子以便说清楚。我会确保不要重蹈覆辙。
无论如何，我正在为高中的计算机科学课开发一个Android应用程序（非常基础），我相对接近完成。我真的很沮丧，因为我的应用程序的一个方面导致应用程序崩溃并给出错误“不幸的应用程序已停止”。我想知道你们是否可以帮助我。
基本上，我的意思是该人在文本字段（EditText）中输入他们的名字，然后他们选择1/2的单选按钮（英语或法语问候语）然后选择标签（TextView）下面应该根据单选按钮选择显示为Hello +“他们的名字输入”或Bonjour。但是，输入后，当我点击“显示”时，应用程序崩溃了按钮。我感谢所有可以从你们那里得到的帮助:)
请在下面找到java和xml文件：------------------------------------
import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.RadioButton;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity extends Activity {
public final static String EXTRA_MESSAGE = "com.example.myfirstapp.MESSAGE";
private EditText text;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
/** Mouse Listener AKA Called soon as user clicks the Send button */
public void sendMessage(View view) {
Intent intent = new Intent(this, DisplayMessageActivity.class);
EditText editText = (EditText) findViewById(R.id.edit_message);
String message = editText.getText().toString();
intent.putExtra(EXTRA_MESSAGE, message);
startActivity(intent);
}
public void showAboutMessage(View v){
Toast.makeText(this, "Grade 12 Student @ Bluevale Collegiate Institute!", Toast.LENGTH_LONG).show();
}
private boolean flipsided = false;
public void flipImage (View view){
ImageView portrait = (ImageView)
findViewById (R.id.faceImageView);
if(flipsided){
portrait.setImageResource(R.drawable.normal);
}else{
Toast.makeText(this, "Yes, that's me in NYC :)", Toast.LENGTH_LONG).show();
}
flipsided=!flipsided;
}
@SuppressLint("DefaultLocale")
public void onClick(View view){
RadioButton engButton = (RadioButton) findViewById(R.id.radioButton1);
RadioButton frenchButton = (RadioButton) findViewById(R.id.radioButton2);
if(text.getText().length() == 0){
Toast.makeText(this, "Please enter a valid name!",Toast.LENGTH_LONG).show();
return;
}
TextView label = (TextView) findViewById(R.id.JLabel);
if(engButton.isChecked()){
label.setText("Hello" + text.getText().toString().toUpperCase());
frenchButton.setChecked(false);
engButton.setChecked(true);
}else{
label.setText("Bonjour" + text.getText().toString().toUpperCase());
frenchButton.setChecked(false);
engButton.setChecked(true);
}
}
然后这是我的XML文件：--------------------------------------- ---
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".MainActivity" >
<CheckedTextView
android:id="@+id/checkedTextView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="10dp"
android:text="@string/my_name"
android:textSize="27sp" />
<RatingBar
android:id="@+id/ratingBar1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/checkedTextView2"
android:layout_centerHorizontal="true"
android:layout_marginTop="1dp" />
<ImageView
android:id="@+id/faceImageView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="@+id/ratingBar1"
android:layout_marginTop="20dp"
android:onClick="flipImage"
android:src="@drawable/normal" />
<CheckedTextView
android:id="@+id/checkedTextView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/button1"
android:layout_centerHorizontal="true"
android:layout_marginTop="21dp"
android:text="@string/rate" />
<Button
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignRight="@+id/faceImageView"
android:layout_below="@+id/aboutMeButton"
android:layout_marginTop="14dp"
android:onClick="sendMessage"
android:text="@string/button_send" />
<EditText
android:id="@+id/edit_message"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="@+id/button1"
android:layout_alignBottom="@+id/button1"
android:layout_alignLeft="@+id/faceImageView"
android:ems="10"
android:hint="@string/edit_message" />
<Button
android:id="@+id/aboutMeButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/checkedTextView1"
android:layout_centerHorizontal="true"
android:onClick="showAboutMessage"
android:text="@string/about" />
</RelativeLayout>
第二个XML文件-------------------------------
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".DisplayMessageActivity" >
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/hello_world" />
<EditText
android:id="@+id/editText1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/textView1"
android:layout_centerHorizontal="true"
android:layout_marginTop="35dp"
android:ems="10"
android:hint="@string/enter_name" />
<Button
android:id="@+id/button13"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/editText1"
android:layout_centerHorizontal="true"
android:onClick="onClick"
android:text="@string/button_print" />
<RadioGroup
android:id="@+id/radioGroup1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/textView1"
android:layout_centerVertical="true" >
<RadioButton
android:id="@+id/radioButton2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/JLabel"
android:layout_below="@+id/radioGroup1"
android:layout_marginTop="23dp"
android:text="@string/radio_button2"
android:textSize="20sp" />
<RadioButton
android:id="@+id/radioButton1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBottom="@+id/radioButton2"
android:layout_alignLeft="@+id/radioButton2"
android:layout_marginBottom="40dp"
android:checked="true"
android:text="@string/radio_button1"
android:textSize="20sp" />
</RadioGroup>
<TextView
android:id="@+id/JLabel"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/radioGroup1"
android:layout_below="@+id/radioGroup1"
android:layout_marginTop="30dp"
android:text="@string/JLabel"
android:textSize="18sp" />
</RelativeLayout>
这是我的logcat文件：
06-18 21:13:04.859: D/AndroidRuntime(1826): Shutting down VM
06-18 21:13:04.859: W/dalvikvm(1826): threadid=1: thread exiting with uncaught exception (group=0xb4d14908)
06-18 21:13:04.859: E/AndroidRuntime(1826): FATAL EXCEPTION: main
06-18 21:13:04.859: E/AndroidRuntime(1826): java.lang.IllegalStateException: Could not find a method onClick(View) in the activity class com.example.bci_snsapplication.DisplayMessageActivity for onClick handler on view class android.widget.Button with id 'button13'
06-18 21:13:04.859: E/AndroidRuntime(1826): at android.view.View$1.onClick(View.java:3584)
06-18 21:13:04.859: E/AndroidRuntime(1826): at android.view.View.performClick(View.java:4202)
06-18 21:13:04.859: E/AndroidRuntime(1826): at android.view.View$PerformClick.run(View.java:17340)
06-18 21:13:04.859: E/AndroidRuntime(1826): at android.os.Handler.handleCallback(Handler.java:725)
06-18 21:13:04.859: E/AndroidRuntime(1826): at android.os.Handler.dispatchMessage(Handler.java:92)
06-18 21:13:04.859: E/AndroidRuntime(1826): at android.os.Looper.loop(Looper.java:137)
06-18 21:13:04.859: E/AndroidRuntime(1826): at android.app.ActivityThread.main(ActivityThread.java:5039)
06-18 21:13:04.859: E/AndroidRuntime(1826): at java.lang.reflect.Method.invokeNative(Native Method)
06-18 21:13:04.859: E/AndroidRuntime(1826): at java.lang.reflect.Method.invoke(Method.java:511)
06-18 21:13:04.859: E/AndroidRuntime(1826): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
06-18 21:13:04.859: E/AndroidRuntime(1826): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
06-18 21:13:04.859: E/AndroidRuntime(1826): at dalvik.system.NativeStart.main(Native Method)
06-18 21:13:04.859: E/AndroidRuntime(1826): Caused by: java.lang.NoSuchMethodException: onClick [class android.view.View]
06-18 21:13:04.859: E/AndroidRuntime(1826): at java.lang.Class.getConstructorOrMethod(Class.java:460)
06-18 21:13:04.859: E/AndroidRuntime(1826): at java.lang.Class.getMethod(Class.java:915)
06-18 21:13:04.859: E/AndroidRuntime(1826): at android.view.View$1.onClick(View.java:3577)
06-18 21:13:04.859: E/AndroidRuntime(1826): ... 11 more
06-18 21:13:04.899: E/DropBoxManagerService(1192): Can't write: data_app_crash
06-18 21:13:04.899: E/DropBoxManagerService(1192): java.io.IOException: Can't mkdir: /data/system/dropbox
06-18 21:13:04.899: E/DropBoxManagerService(1192): at com.android.server.DropBoxManagerService.init(DropBoxManagerService.java:582)
06-18 21:13:04.899: E/DropBoxManagerService(1192): at com.android.server.DropBoxManagerService.add(DropBoxManagerService.java:185)
06-18 21:13:04.899: E/DropBoxManagerService(1192): at android.os.DropBoxManager.addText(DropBoxManager.java:272)
06-18 21:13:04.899: E/DropBoxManagerService(1192): at com.android.server.am.ActivityManagerService$12.run(ActivityManagerService.java:8545)
06-18 21:13:04.909: W/ActivityManager(1192): Force finishing activity com.example.bci_snsapplication/.DisplayMessageActivity
06-18 21:13:05.219: W/Trace(1192): Unexpected value from nativeGetEnabledTags: 0
06-18 21:13:05.219: W/Trace(1192): Unexpected value from nativeGetEnabledTags: 0
更多LOGCAT DETAILS -------------------------------------------- -------------
06-18 22:47:25.029: W/Trace(1663): Unexpected value from nativeGetEnabledTags: 0
06-18 22:47:25.029: D/ExchangeService(1663): !!! EAS ExchangeService, onStartCommand, startingUp = true, running = false
06-18 22:47:25.029: W/Trace(1663): Unexpected value from nativeGetEnabledTags: 0
06-18 22:47:25.029: W/ActivityManager(1193): Unable to start service Intent { act=com.android.email.ACCOUNT_INTENT } U=0: not found
06-18 22:47:25.036: D/ExchangeService(1663): !!! Email application not found; stopping self
06-18 22:47:25.036: W/Trace(1663): Unexpected value from nativeGetEnabledTags: 0
06-18 22:47:25.056: W/ActivityManager(1193): Unable to start service Intent { act=com.android.email.ACCOUNT_INTENT } U=0: not found
06-18 22:47:25.056: W/Trace(1663): Unexpected value from nativeGetEnabledTags: 0
06-18 22:47:25.056: E/ActivityThread(1663): Service com.android.exchange.ExchangeService has leaked ServiceConnection com.android.emailcommon.service.ServiceProxy$ProxyConnection@b5036390 that was originally bound here
06-18 22:47:25.056: E/ActivityThread(1663): android.app.ServiceConnectionLeaked: Service com.android.exchange.ExchangeService has leaked ServiceConnection com.android.emailcommon.service.ServiceProxy$ProxyConnection@b5036390 that was originally bound here
06-18 22:47:25.056: E/ActivityThread(1663): at android.app.LoadedApk$ServiceDispatcher.<init>(LoadedApk.java:969)
06-18 22:47:25.056: E/ActivityThread(1663): at android.app.LoadedApk.getServiceDispatcher(LoadedApk.java:863)
06-18 22:47:25.056: E/ActivityThread(1663): at android.app.ContextImpl.bindService(ContextImpl.java:1418)
06-18 22:47:25.056: E/ActivityThread(1663): at com.android.exchange.ExchangeService$7.run(ExchangeService.java:1850)
06-18 22:47:25.056: E/ActivityThread(1663): at java.util.concurrent.FutureTask.run(FutureTask.java:234)
06-18 22:47:25.056: E/ActivityThread(1663): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
06-18 22:47:25.056: E/ActivityThread(1663): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
06-18 22:47:25.056: E/ActivityThread(1663): at java.lang.Thread.run(Thread.java:856)
06-18 22:47:25.088: E/StrictMode(1663): null
06-18 22:47:25.088: E/StrictMode(1663): android.app.ServiceConnectionLeaked: Service com.android.exchange.ExchangeService has leaked ServiceConnection com.android.emailcommon.service.ServiceProxy$ProxyConnection@b5036390 that was originally bound here
06-18 22:47:25.088: E/StrictMode(1663): at android.app.LoadedApk$ServiceDispatcher.<init>(LoadedApk.java:969)
06-18 22:47:25.088: E/StrictMode(1663): at android.app.LoadedApk.getServiceDispatcher(LoadedApk.java:863)
06-18 22:47:25.088: E/StrictMode(1663): at android.app.ContextImpl.bindService(ContextImpl.java:1418)
06-18 22:47:25.088: E/StrictMode(1663): at android.app.ContextImpl.bindService(ContextImpl.java:1407)
06-18 22:47:25.088: E/StrictMode(1663): at android.content.ContextWrapper.bindService(ContextWrapper.java:473)
06-18 22:47:25.088: E/StrictMode(1663): at com.android.emailcommon.service.ServiceProxy.setTask(ServiceProxy.java:157)
06-18 22:47:25.088: E/StrictMode(1663): at com.android.emailcommon.service.ServiceProxy.setTask(ServiceProxy.java:145)
06-18 22:47:25.088: E/StrictMode(1663): at com.android.emailcommon.service.ServiceProxy.test(ServiceProxy.java:191)
06-18 22:47:25.088: E/StrictMode(1663): at com.android.exchange.ExchangeService$7.run(ExchangeService.java:1850)
06-18 22:47:25.088: E/StrictMode(1663): at com.android.emailcommon.utility.Utility$2.doInBackground(Utility.java:551)
06-18 22:47:25.088: E/StrictMode(1663): at com.android.emailcommon.utility.Utility$2.doInBackground(Utility.java:549)
06-18 22:47:25.088: E/StrictMode(1663): at android.os.AsyncTask$2.call(AsyncTask.java:287)
06-18 22:47:25.088: E/StrictMode(1663): at java.util.concurrent.FutureTask.run(FutureTask.java:234)
06-18 22:47:25.088: E/StrictMode(1663): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
06-18 22:47:25.088: E/StrictMode(1663): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
06-18 22:47:25.088: E/StrictMode(1663): at java.lang.Thread.run(Thread.java:856)
06-18 22:47:25.088: W/ActivityManager(1193): Unbind failed: could not find connection for android.os.BinderProxy@b51f0d58
06-18 22:47:25.096: E/ActivityThread(1663): Service com.android.exchange.ExchangeService has leaked ServiceConnection com.android.emailcommon.service.ServiceProxy$ProxyConnection@b50238c8 that was originally bound here
06-18 22:47:25.096: E/ActivityThread(1663): android.app.ServiceConnectionLeaked: Service com.android.exchange.ExchangeService has leaked ServiceConnection com.android.emailcommon.service.ServiceProxy$ProxyConnection@b50238c8 that was originally bound here
06-18 22:47:25.096: E/ActivityThread(1663): at android.app.LoadedApk$ServiceDispatcher.<init>(LoadedApk.java:969)
06-18 22:47:25.096: E/ActivityThread(1663): at android.app.LoadedApk.getServiceDispatcher(LoadedApk.java:863)
06-18 22:47:25.096: E/ActivityThread(1663): at android.app.ContextImpl.bindService(ContextImpl.java:1418)
06-18 22:47:25.096: E/ActivityThread(1663): at android.app.ContextImpl.bindService(ContextImpl.java:1407)
06-18 22:47:25.096: E/ActivityThread(1663): at android.content.ContextWrapper.bindService(ContextWrapper.java:473)
06-18 22:47:25.096: E/ActivityThread(1663): at com.android.emailcommon.service.ServiceProxy.setTask(ServiceProxy.java:157)
06-18 22:47:25.096: E/ActivityThread(1663): at com.android.emailcommon.service.ServiceProxy.setTask(ServiceProxy.java:145)
06-18 22:47:25.096: E/ActivityThread(1663): at com.android.emailcommon.service.AccountServiceProxy.getDeviceId(AccountServiceProxy.java:116)
06-18 22:47:25.096: E/ActivityThread(1663): at com.android.exchange.ExchangeService.getDeviceId(ExchangeService.java:1249)
06-18 22:47:25.096: E/ActivityThread(1663): at com.android.exchange.ExchangeService$7.run(ExchangeService.java:1856)
06-18 22:47:25.096: E/ActivityThread(1663): at com.android.emailcommon.utility.Utility$2.doInBackground(Utility.java:551)
06-18 22:47:25.096: E/ActivityThread(1663): at com.android.emailcommon.utility.Utility$2.doInBackground(Utility.java:549)
06-18 22:47:25.096: E/ActivityThread(1663): at android.os.AsyncTask$2.call(AsyncTask.java:287)
06-18 22:47:25.096: E/ActivityThread(1663): at java.util.concurrent.FutureTask.run(FutureTask.java:234)
06-18 22:47:25.096: E/ActivityThread(1663): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
06-18 22:47:25.096: E/ActivityThread(1663): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
06-18 22:47:25.096: E/ActivityThread(1663): at java.lang.Thread.run(Thread.java:856)
06-18 22:47:25.108: E/StrictMode(1663): null
06-18 22:47:25.108: E/StrictMode(1663): android.app.ServiceConnectionLeaked: Service com.android.exchange.ExchangeService has leaked ServiceConnection com.android.emailcommon.service.ServiceProxy$ProxyConnection@b50238c8 that was originally bound here
06-18 22:47:25.108: E/StrictMode(1663): at android.app.LoadedApk$ServiceDispatcher.<init>(LoadedApk.java:969)
06-18 22:47:25.108: E/StrictMode(1663): at android.app.LoadedApk.getServiceDispatcher(LoadedApk.java:863)
06-18 22:47:25.108: E/StrictMode(1663): at android.app.ContextImpl.bindService(ContextImpl.java:1418)
06-18 22:47:25.108: E/StrictMode(1663): at android.app.ContextImpl.bindService(ContextImpl.java:1407)
06-18 22:47:25.108: E/StrictMode(1663): at android.content.ContextWrapper.bindService(ContextWrapper.java:473)
06-18 22:47:25.108: E/StrictMode(1663): at com.android.emailcommon.service.ServiceProxy.setTask(ServiceProxy.java:157)
06-18 22:47:25.108: E/StrictMode(1663): at com.android.emailcommon.service.ServiceProxy.setTask(ServiceProxy.java:145)
06-18 22:47:25.108: E/StrictMode(1663): at com.android.emailcommon.service.AccountServiceProxy.getDeviceId(AccountServiceProxy.java:116)
06-18 22:47:25.108: E/StrictMode(1663): at com.android.exchange.ExchangeService.getDeviceId(ExchangeService.java:1249)
06-18 22:47:25.108: E/StrictMode(1663): at com.android.exchange.ExchangeService$7.run(ExchangeService.java:1856)
06-18 22:47:25.108: E/StrictMode(1663): at com.android.emailcommon.utility.Utility$2.doInBackground(Utility.java:551)
06-18 22:47:25.108: E/StrictMode(1663): at com.android.emailcommon.utility.Utility$2.doInBackground(Utility.java:549)
06-18 22:47:25.108: E/StrictMode(1663): at android.os.AsyncTask$2.call(AsyncTask.java:287)
06-18 22:47:25.108: E/StrictMode(1663): at java.util.concurrent.FutureTask.run(FutureTask.java:234)
06-18 22:47:25.108: E/StrictMode(1663): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
06-18 22:47:25.108: E/StrictMode(1663): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
06-18 22:47:25.108: E/StrictMode(1663): at java.lang.Thread.run(Thread.java:856)
06-18 22:47:25.108: W/ActivityManager(1193): Unbind failed: could not find connection for android.os.BinderProxy@b539b310
06-18 22:47:25.436: W/Trace(1964): Unexpected value from nativeGetEnabledTags: 0
06-18 22:49:05.357: E/ActivityThread(1663): Service com.android.exchange.ExchangeService has leaked ServiceConnection com.android.emailcommon.service.ServiceProxy$ProxyConnection@b5085b08 that was originally bound here
06-18 22:49:05.357: E/ActivityThread(1663): android.app.ServiceConnectionLeaked: Service com.android.exchange.ExchangeService has leaked ServiceConnection com.android.emailcommon.service.ServiceProxy$ProxyConnection@b5085b08 that was originally bound here
06-18 22:49:05.357: E/ActivityThread(1663): at android.app.LoadedApk$ServiceDispatcher.<init>(LoadedApk.java:969)
06-18 22:49:05.357: E/ActivityThread(1663): at android.app.LoadedApk.getServiceDispatcher(LoadedApk.java:863)
06-18 22:49:05.357: E/ActivityThread(1663): at android.app.ContextImpl.bindService(ContextImpl.java:1418)
06-18 22:49:05.357: E/ActivityThread(1663): at android.app.ContextImpl.bindService(ContextImpl.java:1407)
06-18 22:49:05.357: E/ActivityThread(1663): at android.content.ContextWrapper.bindService(ContextWrapper.java:473)
06-18 22:49:05.357: E/ActivityThread(1663): at com.android.emailcommon.service.ServiceProxy.setTask(ServiceProxy.java:157)
06-18 22:49:05.357: E/ActivityThread(1663): at com.android.emailcommon.service.ServiceProxy.setTask(ServiceProxy.java:145)
06-18 22:49:05.357: E/ActivityThread(1663): at com.android.emailcommon.service.ServiceProxy.test(ServiceProxy.java:191)
06-18 22:49:05.357: E/ActivityThread(1663): at com.android.exchange.ExchangeService$7.run(ExchangeService.java:1850)
06-18 22:49:05.357: E/ActivityThread(1663): at com.android.emailcommon.utility.Utility$2.doInBackground(Utility.java:551)
06-18 22:49:05.357: E/ActivityThread(1663): at com.android.emailcommon.utility.Utility$2.doInBackground(Utility.java:549)
06-18 22:49:05.357: E/ActivityThread(1663): at android.os.AsyncTask$2.call(AsyncTask.java:287)
06-18 22:49:05.357: E/ActivityThread(1663): at java.util.concurrent.FutureTask.run(FutureTask.java:234)
06-18 22:49:05.357: E/ActivityThread(1663): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
06-18 22:49:05.357: E/ActivityThread(1663): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
06-18 22:49:05.357: E/ActivityThread(1663): at java.lang.Thread.run(Thread.java:856)
06-18 22:49:05.357: E/StrictMode(1663): null
06-18 22:49:05.357: E/StrictMode(1663): android.app.ServiceConnectionLeaked: Service com.android.exchange.ExchangeService has leaked ServiceConnection com.android.emailcommon.service.ServiceProxy$ProxyConnection@b5085b08 that was originally bound here
06-18 22:49:05.357: E/StrictMode(1663): at android.app.LoadedApk$ServiceDispatcher.<init>(LoadedApk.java:969)
06-18 22:49:05.357: E/StrictMode(1663): at android.app.LoadedApk.getServiceDispatcher(LoadedApk.java:863)
06-18 22:49:05.357: E/StrictMode(1663): at android.app.ContextImpl.bindService(ContextImpl.java:1418)
06-18 22:49:05.357: E/StrictMode(1663): at android.app.ContextImpl.bindService(ContextImpl.java:1407)
06-18 22:49:05.357: E/StrictMode(1663): at android.content.ContextWrapper.bindService(ContextWrapper.java:473)
06-18 22:49:05.357: E/StrictMode(1663): at com.android.emailcommon.service.ServiceProxy.setTask(ServiceProxy.java:157)
06-18 22:49:05.357: E/StrictMode(1663): at com.android.emailcommon.service.ServiceProxy.setTask(ServiceProxy.java:145)
06-18 22:49:05.357: E/StrictMode(1663): at com.android.emailcommon.service.ServiceProxy.test(ServiceProxy.java:191)
06-18 22:49:05.357: E/StrictMode(1663): at com.android.exchange.ExchangeService$7.run(ExchangeService.java:1850)
06-18 22:49:05.357: E/StrictMode(1663): at
答案 0 :(得分：2)
问题出在您的DisplayMessageActivity课程中。您似乎没有onClick()方法。所以当你点击Button它崩溃了。由于你的xml android:onClick="onClick"中有一个函数，比如
public void onClick(View v)
{
// put code here
}
看起来你错误地命名了EditText，除非这是一个复制/粘贴错误。
private EditText text;
但是你要初始化
EditText editText = (EditText) findViewById(R.id.edit_message);
然后你尝试在未初始化的text
if(text.getText().length() == 0){
产生NPE。我不知道这些是不是两个不同的，但无论如何，我都没有看到text在任何地方初始化