这是我的New.java我在这个xml上有一个按钮，它使用Display.java重定向到另一个显示xml，但是我遇到了错误：
不幸的是，Project已停止
New.java
package com.example.pallavi.project;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
public class New extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_new);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_new, menu);
return true;
}
public void onbuttonClick(View v){
if(v.getId()==R.id.Bdisplay)
{
Intent i= new Intent(New.this,Display.class);
startActivity(i);
}
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
Display.java：
package com.example.pallavi.project;
import android.app.Activity;
import android.os.Bundle;
/**
* Created by pallavi on 11/5/15.
*/
public class Display extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.display);
}
}
的AndroidManifest.xml：
![<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.pallavi.project" >
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name=".New"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".Display">
</activity>
</application>
</manifest>][1]
我的logcat：
05-11 15:31:27.548 2130-2139/com.android.calendar W/CursorWrapperInner﹕ Cursor finalized without prior close()
05-11 15:31:29.104 1218-1236/system_process I/ActivityManager﹕ Waited long enough for: ServiceRecord{316ced65 u0 com.android.music/.MediaPlaybackService}
05-11 15:31:29.849 2130-2273/com.android.calendar I/GlobalDismissManager﹕ no sender configured
05-11 15:31:29.849 2130-2273/com.android.calendar D/AlertService﹕ Beginning updateAlertNotification
05-11 15:31:29.854 2130-2273/com.android.calendar D/AlertService﹕ No fired or scheduled alerts
05-11 15:31:29.860 2130-2273/com.android.calendar D/AlertService﹕ Scheduling next alarm with AlarmScheduler. sEventReminderReceived: null
05-11 15:31:29.863 2130-2273/com.android.calendar D/AlarmScheduler﹕ No events found starting within 1 week.
05-11 15:31:31.124 1218-1236/system_process W/ActivityManager﹕ Activity destroy timeout for ActivityRecord{1985c099 u0 com.example.pallavi.project/.New t38 f}
05-11 15:31:33.302 1218-1816/system_process I/art﹕ Explicit concurrent mark sweep GC freed 22885(1778KB) AllocSpace objects, 25(1739KB) LOS objects, 25% free, 11MB/15MB, paused 443us total 19.555ms
05-11 15:31:33.314 1765-2379/com.google.android.gms I/iu.UploadsManager﹕ End new media; added: 0, uploading: 0, time: 52 ms
05-11 15:31:34.564 1765-2251/com.google.android.gms V/ConfigFetchTask﹕ ConfigFetchTask getDeviceDataVersionInfo(): ABFEt1XXGxcq7BMFyB3VpnYqkuJ0zBLomkMGX-C8nW501WUsnb0lcC08LpquYUIsL-GGhixNWgrJLPvTVAw_4aO6pZJ-f0pws18TXBljF3PnOWeUMv_dmFylUQ4CZtISzUpjd3sHqllt34lBFjXKIeMI_haVO7k8ycBH0aKhbZ-7oKDK_0hcvD6unM9hoXvyaDf7wHyy3ZrNPoOOXkZuk9Ly00A-Wt8FbYNHg7DDJRdxoXJgHB6N2r6E_dCntd7koMlff1avPpuapg1sWuavKXB_DSp161P8SumBYofET4-62mJQZcAaLfo
05-11 15:31:34.566 1765-2251/com.google.android.gms I/GoogleURLConnFactory﹕ Using platform SSLCertificateSocketFactory
05-11 15:31:34.570 1765-2251/com.google.android.gms W/ActivityThread﹕ ClassLoader.loadClass: The class loader returned by Thread.getContextClassLoader() may fail for processes that host multiple applications. You should explicitly specify a context class loader. For example: Thread.setContextClassLoader(getClass().getClassLoader());
05-11 15:31:34.865 1765-1765/com.google.android.gms I/ConfigFetchService﹕ fetch service done; releasing wakelock
05-11 15:31:34.866 1765-1765/com.google.android.gms I/ConfigFetchService﹕ stopping self
05-11 15:31:37.824 1218-1236/system_process I/ActivityManager﹕ Waited long enough for: ServiceRecord{3483d1d4 u0 com.android.calendar/.alerts.InitAlarmsService}
05-11 15:31:39.915 1593-1593/com.google.process.gapps I/ConfigService﹕ onDestroy
05-11 15:31:42.245 1765-2105/com.google.android.gms I/CheckinService﹕ Done disabling old GoogleServicesFramework version
05-11 15:31:52.885 2130-2160/com.android.calendar D/InitAlarmsService﹕ Clearing and rescheduling alarms.
05-11 15:31:52.890 1218-1586/system_process I/ActivityManager﹕ Killing 1503:com.android.printspooler/u0a42 (adj 15): empty #17
05-11 15:31:52.896 1218-1412/system_process W/libprocessgroup﹕ failed to open /acct/uid_10042/pid_1503/cgroup.procs: No such file or directory
05-11 15:32:15.076 1218-1816/system_process I/MediaFocusControl﹕ AudioFocus abandonAudioFocus() from android.media.AudioManager@af8ca39com.android.music.MediaPlaybackService$3@1aa1a87e
05-11 15:32:15.077 1218-1817/system_process I/ActivityManager﹕ Killing 1684:com.android.music/u0a36 (adj 15): empty #17
05-11 15:32:15.085 1218-1402/system_process W/libprocessgroup﹕ failed to open /acct/uid_10036/pid_1684/cgroup.procs: No such file or directory
05-11 15:33:25.507 1593-3249/com.google.process.gapps I/GoogleURLConnFactory﹕ Using platform SSLCertificateSocketFactory
05-11 15:33:25.513 1593-3249/com.google.process.gapps W/Uploader﹕ No account for auth token provided
05-11 15:33:26.236 1593-3249/com.google.process.gapps W/Uploader﹕ no longer exists, so no auth token.
05-11 15:33:26.494 1593-3249/com.google.process.gapps W/Uploader﹕ No account for auth token provided
05-11 15:33:26.705 1593-3249/com.google.process.gapps W/Uploader﹕ No account for auth token provided
05-11 15:33:26.947 1593-1602/com.google.process.gapps E/StrictMode﹕ A resource was acquired at attached stack trace but never released. See java.io.Closeable for information on avoiding resource leaks.
java.lang.Throwable: Explicit termination method 'end' not called
at dalvik.system.CloseGuard.open(CloseGuard.java:184)
at java.util.zip.Inflater.<init>(Inflater.java:82)
at com.android.okio.GzipSource.<init>(GzipSource.java:57)
at com.android.okhttp.internal.http.HttpEngine.initContentStream(HttpEngine.java:478)
at com.android.okhttp.internal.http.HttpEngine.readResponse(HttpEngine.java:668)
at com.android.okhttp.internal.http.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:379)
at com.android.okhttp.internal.http.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:323)
at com.android.okhttp.internal.http.HttpURLConnectionImpl.getResponseCode(HttpURLConnectionImpl.java:491)
at com.android.okhttp.internal.http.DelegatingHttpsURLConnection.getResponseCode(DelegatingHttpsURLConnection.java:105)
at com.android.okhttp.internal.http.HttpsURLConnectionImpl.getResponseCode(HttpsURLConnectionImpl.java:25)
at com.google.android.gms.http.GoogleHttpClient.a(SourceFile:795)
at com.google.android.gms.http.GoogleHttpClient.b(SourceFile:764)
at com.google.android.gms.http.GoogleHttpClient.execute(SourceFile:667)
at com.google.android.gms.http.GoogleHttpClient.execute(SourceFile:658)
at com.google.android.gms.playlog.uploader.e.a(SourceFile:370)
at com.google.android.gms.playlog.uploader.e.a(SourceFile:251)
at com.google.android.gms.playlog.uploader.e.a(SourceFile:223)
at com.google.android.gms.playlog.uploader.UploaderService.b(SourceFile:61)
at com.google.android.gms.playlog.uploader.UploaderService.a(SourceFile:35)
at com.google.android.gms.gcm.ar.run(SourceFile:131)
05-11 15:36:20.289 1869-1869/? I/Process﹕ Sending signal. PID: 1869 SIG: 9
05-11 15:36:20.296 1218-1412/system_process W/InputMethodManagerService﹕ Got RemoteException sending setActive(false) notification to pid 1869 uid 10058
05-11 15:36:20.299 1218-1586/system_process I/ActivityManager﹕ Process com.example.pallavi.project (pid 1869) has died
05-11 15:43:41.403 1218-1266/system_process W/AudioTrack﹕ AUDIO_OUTPUT_FLAG_FAST denied by client
05-11 15:43:41.427 1461-1461/com.android.launcher W/View﹕ requestLayout() improperly called by com.android.launcher2.PagedViewIcon{25575d45 VFED..CL ......ID 0,0-222,276 #0} during layout: running second layout pass
05-11 15:43:41.427 1461-1461/com.android.launcher W/View﹕ requestLayout() improperly called by com.android.launcher2.PagedViewIcon{2cfbec9a VFED..CL ......ID 270,0-492,276 #1} during layout: running second layout pass
05-11 15:43:41.427 1461-1461/com.android.launcher W/View﹕ requestLayout() improperly called by com.android.launcher2.PagedViewIcon{276d9cb VFED..CL ......ID 540,0-762,276 #2} during layout: running second layout pass
05-11 15:43:41.427 1461-1461/com.android.launcher W/View﹕ requestLayout() improperly called by com.android.launcher2.PagedViewIcon{f8c5a8 VFED..CL ......ID 810,0-1032,276 #3} during layout: running second layout pass
05-11 15:43:41.427 1461-1461/com.android.launcher W/View﹕ requestLayout() improperly called by com.android.launcher2.PagedViewIcon{3e1588c1 VFED..CL ......ID 0,290-222,566 #4} during layout: running second layout pass
05-11 15:43:41.427 1461-1461/com.android.launcher W/View﹕ requestLayout() improperly called by com.android.launcher2.PagedViewIcon{51c3866 VFED..CL ......ID 270,290-492,566 #5} during layout: running second layout pass
05-11 15:43:41.427 1461-1461/com.android.launcher W/View﹕ requestLayout() improperly called by com.android.launcher2.PagedViewIcon{b1747a7 VFED..CL ......ID 540,290-762,566 #6} during layout: running second layout pass
05-11 15:43:41.427 1461-1461/com.android.launcher W/View﹕ requestLayout() improperly called by com.android.launcher2.PagedViewIcon{22e89454 VFED..CL ......ID 810,290-1032,566 #7} during layout: running second layout pass
05-11 15:43:41.427 1461-1461/com.android.launcher W/View﹕ requestLayout() improperly called by com.android.launcher2.PagedViewIcon{730effd VFED..CL ......ID 0,580-222,856 #8} during layout: running second layout pass
05-11 15:43:41.427 1461-1461/com.android.launcher W/View﹕ requestLayout() improperly called by com.android.launcher2.PagedViewIcon{13a374f2 VFED..CL ......ID 270,580-492,856 #9} during layout: running second layout pass
05-11 15:43:41.427 1461-1461/com.android.launcher W/View﹕ requestLayout() improperly called by com.android.launcher2.PagedViewIcon{f66b743 VFED..CL ......ID 540,580-762,856 #a} during layout: running second layout pass
05-11 15:43:41.427 1461-1461/com.android.launcher W/View﹕ requestLayout() improperly called by com.android.launcher2.PagedViewIcon{1b64a1c0 VFED..CL ......ID 810,580-1032,856 #b} during layout: running second layout pass
05-11 15:43:41.427 1461-1461/com.android.launcher W/View﹕ requestLayout() improperly called by com.android.launcher2.PagedViewIcon{2da18ef9 VFED..CL ......ID 0,870-222,1146 #c} during layout: running second layout pass
05-11 15:43:41.428 1461-1461/com.android.launcher W/View﹕ requestLayout() improperly called by com.android.launcher2.PagedViewIcon{34efee3e VFED..CL ......ID 270,870-492,1146 #d} during layout: running second layout pass
05-11 15:43:41.428 1461-1461/com.android.launcher W/View﹕ requestLayout() improperly called by com.android.launcher2.PagedViewIcon{26b3849f VFED..CL ......ID 540,870-762,1146 #e} during layout: running second layout pass
05-11 15:43:41.428 1461-1461/com.android.launcher W/View﹕ requestLayout() improperly called by com.android.launcher2.PagedViewIcon{1ed219ec VFED..CL ......ID 810,870-1032,1146 #f} during layout: running second layout pass
05-11 15:43:41.428 1461-1461/com.android.launcher W/View﹕ requestLayout() improperly called by com.android.launcher2.PagedViewIcon{1be321b5 VFED..CL ......ID 0,1160-222,1436 #10} during layout: running second layout pass
05-11 15:43:41.428 1461-1461/com.android.launcher W/View﹕ requestLayout() improperly called by com.android.launcher2.PagedViewIcon{1af8b04a VFED..CL ......ID 270,1160-492,1436 #11} during layout: running second layout pass
05-11 15:43:41.428 1461-1461/com.android.launcher W/View﹕ requestLayout() improperly called by com.android.launcher2.PagedViewIcon{24d5cbbb VFED..CL ......ID 540,1160-762,1436 #12} during layout: running second layout pass
05-11 15:43:41.428 1461-1461/com.android.launcher W/View﹕ requestLayout() improperly called by com.android.launcher2.PagedViewIcon{20bce8d8 VFED..CL ......ID 810,1160-1032,1436 #13} during layout: running second layout pass
05-11 15:43:45.307 1218-1266/system_process W/AudioTrack﹕ AUDIO_OUTPUT_FLAG_FAST denied by client
05-11 15:43:45.314 1218-1231/system_process I/ActivityManager﹕ START u0 {act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10000000 cmp=com.example.pallavi.project/.New (has extras)} from uid 10008 on display 0
05-11 15:43:45.345 1218-1232/system_process I/ActivityManager﹕ Start proc com.example.pallavi.project for activity com.example.pallavi.project/.New: pid=7984 uid=10058 gids={50058, 9997} abi=x86
05-11 15:43:45.352 7984-7984/? I/art﹕ Not late-enabling -Xcheck:jni (already on)
05-11 15:43:45.453 7984-7999/com.example.pallavi.project D/OpenGLRenderer﹕ Render dirty regions requested: true
05-11 15:43:45.455 7984-7984/com.example.pallavi.project D/﹕ HostConnection::get() New Host Connection established 0xae1ef650, tid 7984
05-11 15:43:45.458 7984-7984/com.example.pallavi.project D/Atlas﹕ Validating map...
05-11 15:43:45.492 7984-7999/com.example.pallavi.project D/﹕ HostConnection::get() New Host Connection established 0xae1ef900, tid 7999
05-11 15:43:45.495 7984-7999/com.example.pallavi.project I/OpenGLRenderer﹕ Initialized EGL, version 1.4
05-11 15:43:45.510 7984-7999/com.example.pallavi.project D/OpenGLRenderer﹕ Enabling debug mode 0
05-11 15:43:45.526 7984-7999/com.example.pallavi.project W/EGL_emulation﹕ eglSurfaceAttrib not implemented
05-11 15:43:45.526 7984-7999/com.example.pallavi.project W/OpenGLRenderer﹕ Failed to set EGL_SWAP_BEHAVIOR on surface 0xa6c32280, error=EGL_SUCCESS
05-11 15:43:45.771 1218-1241/system_process I/ActivityManager﹕ Displayed com.example.pallavi.project/.New: +437ms
05-11 15:43:46.593 1218-1266/system_process W/AudioTrack﹕ AUDIO_OUTPUT_FLAG_FAST denied by client
05-11 15:43:46.599 7984-7984/com.example.pallavi.project D/AndroidRuntime﹕ Shutting down VM
05-11 15:43:46.600 7984-7984/com.example.pallavi.project E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: com.example.pallavi.project, PID: 7984
java.lang.IllegalStateException: Could not find a method onButtonClick(View) in the activity class com.example.pallavi.project.New for onClick handler on view class android.widget.Button with id 'Bdisplay'
at android.view.View$1.onClick(View.java:3994)
at android.view.View.performClick(View.java:4756)
at android.view.View$PerformClick.run(View.java:19749)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5221)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)
Caused by: java.lang.NoSuchMethodException: onButtonClick [class android.view.View]
at java.lang.Class.getMethod(Class.java:664)
at java.lang.Class.getMethod(Class.java:643)
at android.view.View$1.onClick(View.java:3987)
at android.view.View.performClick(View.java:4756)
at android.view.View$PerformClick.run(View.java:19749)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5221)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)
05-11 15:43:46.602 1218-1502/system_process W/ActivityManager﹕ Force finishing activity com.example.pallavi.project/.New
05-11 15:43:46.607 1218-1502/system_process D/﹕ HostConnection::get() New Host Connection established 0xa2e2c750, tid 1502
05-11 15:43:46.609 920-920/? E/EGL_emulation﹕ tid 920: eglCreateSyncKHR(1237): error 0x3004 (EGL_BAD_ATTRIBUTE)
05-11 15:43:46.668 1218-2023/system_process I/OpenGLRenderer﹕ Initialized EGL, version 1.4
05-11 15:43:46.681 1218-2023/system_process W/EGL_emulation﹕ eglSurfaceAttrib not implemented
05-11 15:43:46.681 1218-2023/system_process W/OpenGLRenderer﹕ Failed to set EGL_SWAP_BEHAVIOR on surface 0x9e306b80, error=EGL_SUCCESS
05-11 15:43:47.135 1218-1236/system_process W/ActivityManager﹕ Activity pause timeout for ActivityRecord{46ec2fd u0 com.example.pallavi.project/.New t39 f}
05-11 15:43:47.180 1461-1619/com.android.launcher W/EGL_emulation﹕ eglSurfaceAttrib not implemented
05-11 15:43:47.180 1461-1619/com.android.launcher W/OpenGLRenderer﹕ Failed to set EGL_SWAP_BEHAVIOR on surface 0xb0a9dcc0, error=EGL_SUCCESS
05-11 15:43:49.897 1218-1277/system_process D/TaskPersister﹕ removeObsoleteFile: deleting file=38_task.xml
05-11 15:43:49.897 1218-1277/system_process D/TaskPersister﹕ removeObsoleteFile: deleting file=38_task_thumbnail.png
05-11 15:43:57.526 1218-1236/system_process W/ActivityManager﹕ Activity destroy timeout for ActivityRecord{46ec2fd u0 com.example.pallavi.project/.New t39 f}
05-11 15:44:00.036 1461-1619/com.android.launcher W/OpenGLRenderer﹕ Incorrectly called buildLayer on View: ShortcutAndWidgetContainer, destroying layer...
05-11 15:44:09.049 1765-8185/com.google.android.gms I/EventLogService﹕ Aggregate from 1431337234018 (log), 1431337234018 (data)
05-11 15:48:46.671 7984-7984/? I/Process﹕ Sending signal. PID: 7984 SIG: 9
05-11 15:48:46.678 1218-1412/system_process W/InputMethodManagerService﹕ Got RemoteException sending setActive(false) notification to pid 7984 uid 10058
05-11 15:48:46.680 1218-1231/system_process I/ActivityManager﹕ Process com.example.pallavi.project (pid 7984) has died
05-11 15:51:07.942 1218-1235/system_process I/UsageStatsService﹕ User[0] Flushing usage stats to disk
答案 0 :(得分：3)
更改此
public void onbuttonClick(View v)
通过
public void onButtonClick(View v)
实际上，你已经定义了
android:onClick="onButtonClick" in your xml
并且，您在java中使用onbuttonClick（），这就是为什么它会给你一个例外。
答案 1 :(得分：1)
您必须在New.java中将onbuttonClick更改为onButtonClick
答案 2 :(得分：1)
你Stacktrace清楚地说：没有这样的方法onButtonClick。所以，我假设你已经在你的xml布局中添加了这个
android:onClick="onButtonClick"
但是New类中的方法被称为：
public void onbuttonClick(View v){
if(v.getId()==R.id.Bdisplay)
{
Intent i= new Intent(New.this,Display.class);
startActivity(i);
}
}
所以你必须在你的xml布局中更改属性：
android:onClick="onbuttonClick"
或将java类更改为
public void onButtonClick(View v){
if(v.getId()==R.id.Bdisplay)
{
Intent i= new Intent(New.this,Display.class);
startActivity(i);
}
}
答案 3 :(得分：-1)
首先在oncreate方法中转换按钮。并且还实现了onclicklistener并且也喜欢
button_name.setOnClickListener(this);
谢谢