机器人工作室我的HelloWorld项目已经停止 [英] android studio my helloWorld project has stopped

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问题描述

我只是灌输Android的工作室,当我在模拟器中运行示例项目的Hello World它给了我,我的项目已经停止,这是行不通的。

myActivity.java

 包b3du.im.myapplication;进口android.support.v7.app.ActionBarActivity;
进口android.os.Bundle;
公共类MyActivity扩展ActionBarActivity {    @覆盖
    保护无效的onCreate(捆绑savedInstanceState){
        super.onCreate(savedInstanceState);
        的setContentView(R.layout.activity_my);    }
}

activity_my.xml

 <的RelativeLayout的xmlns:机器人=htt​​p://schemas.android.com/apk/res/android
    的xmlns:工具=htt​​p://schemas.android.com/tool​​s
    机器人:layout_width =match_parent
    机器人:layout_height =match_parent
    机器人:paddingLeft =@扪/ activity_horizo​​ntal_margin
    机器人:paddingRight =@扪/ activity_horizo​​ntal_margin
    机器人:paddingTop =@扪/ activity_vertical_margin
    机器人:paddingBottom会=@扪/ activity_vertical_margin
    工具:上下文=MyActivity。>    <的TextView
        机器人:文字=@字符串/参考hello world
        机器人:layout_width =WRAP_CONTENT
        机器人:layout_height =WRAP_CONTENT/>< / RelativeLayout的>

AndroidManifest.xml中

 <?XML版本=1.0编码=UTF-8&GT?;
<清单的xmlns:机器人=htt​​p://schemas.android.com/apk/res/android
    包=b3du.im.myapplication>    <应用
        机器人:图标=@绘制/ ic_launcher
        机器人:标签=@字符串/ APP_NAME
        机器人:主题=@风格/ AppTheme>
        <活动
            机器人:MyActivityNAME =
            机器人:标签=@字符串/ APP_NAME>
            &所述;意图滤光器>
                <作用机器人:名字=android.intent.action.MAIN/>                <类机器人:名字=android.intent.category.LAUNCHER/>
            &所述; /意图滤光器>
        < /活性GT;
    < /用途>< /清单>

logcat的误差

  5月8日至1日:13:56.557 1884年至1884年/ b3du.im.myapplication I /工艺:发送信号。 PID:1884年SIG:9
5月8日至一日:21:26.244 1944年至1944年/ b3du.im.myapplication D / AndroidRuntime:关闭VM
5月8日至一日:21:26.244 1944年至1944年/ b3du.im.myapplication W / dalvikvm:主题ID = 1:螺纹未捕获的异常退出(组= 0xb2cc9b20)
5月8日至一日:21:26.284 1944年至1944年/ b3du.im.myapplication E / AndroidRuntime:致命异常:主要
    工艺:b3du.im.myapplication,PID:1944年
    了java.lang.RuntimeException:无法启动活动ComponentInfo {b3du.im.myapplication / b3du.im.myapplication.MyActivity}:java.lang.IllegalStateException:您需要使用Theme.AppCompat主题(或后代)与本次活动。
            在android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2195)
            在android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
            在android.app.ActivityThread.access $ 800(ActivityThread.java:135)
            在android.app.ActivityThread $ H.handleMessage(ActivityThread.java:1196)
            在android.os.Handler.dispatchMessage(Handler.java:102)
            在android.os.Looper.loop(Looper.java:136)
            在android.app.ActivityThread.main(ActivityThread.java:5017)
            在java.lang.reflect.Method.invokeNative(本机方法)
            在java.lang.reflect.Method.invoke(Method.java:515)
            在com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:779)
            在com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
            在dalvik.system.NativeStart.main(本机方法)
     java.lang.IllegalStateException:引起你需要使用一个Theme.AppCompat主题(或后代)与本次活动。
            在android.support.v7.app.ActionBarActivityDelegate.onCreate(ActionBarActivityDelegate.java:108)
            在android.support.v7.app.ActionBarActivityDelegateICS.onCreate(ActionBarActivityDelegateICS.java:57)
            在android.support.v7.app.ActionBarActivity.onCreate(ActionBarActivity.java:98)
            在b3du.im.myapplication.MyActivity.onCreate(MyActivity.java:11)
            在android.app.Activity.performCreate(Activity.java:5231)
            在android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
            在android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2159)
在android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
在android.app.ActivityThread.access $ 800(ActivityThread.java:135)
在android.app.ActivityThread $ H.handleMessage(ActivityThread.java:1196)
在android.os.Handler.dispatchMessage(Handler.java:102)
在android.os.Looper.loop(Looper.java:136)
在android.app.ActivityThread.main(ActivityThread.java:5017)
在java.lang.reflect.Method.invokeNative(本机方法)
在java.lang.reflect.Method.invoke(Method.java:515)
在com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:779)
在com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
在dalvik.system.NativeStart.main(本机方法)


解决方案

这是因为你使用 ActionBarActivity ,这就要求程序兼容性主题加以应用。

要么使用该主题,或使用简单的活动。见<一href=\"http://stackoverflow.com/questions/18063395/actionbarcompat-java-lang-illegalstateexception-you-need-to-use-a-theme-appcom\">a类似的问题

I just instilled Android Studio and when I run the sample project hello world in the emulator it gives me my project has stopped and it doesn't work

myActivity.java

    package b3du.im.myapplication;

import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;


public class MyActivity extends ActionBarActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_my);

    }
}

activity_my.xml

<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:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:paddingBottom="@dimen/activity_vertical_margin"
    tools:context=".MyActivity">

    <TextView
        android:text="@string/hello_world"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

</RelativeLayout>

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="b3du.im.myapplication" >

    <application
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name=".MyActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

logcat error

08-01 05:13:56.557    1884-1884/b3du.im.myapplication I/Process﹕ Sending signal. PID: 1884 SIG: 9
08-01 05:21:26.244    1944-1944/b3du.im.myapplication D/AndroidRuntime﹕ Shutting down VM
08-01 05:21:26.244    1944-1944/b3du.im.myapplication W/dalvikvm﹕ threadid=1: thread exiting with uncaught exception (group=0xb2cc9b20)
08-01 05:21:26.284    1944-1944/b3du.im.myapplication E/AndroidRuntime﹕ FATAL EXCEPTION: main
    Process: b3du.im.myapplication, PID: 1944
    java.lang.RuntimeException: Unable to start activity ComponentInfo{b3du.im.myapplication/b3du.im.myapplication.MyActivity}: java.lang.IllegalStateException: You need to use a Theme.AppCompat theme (or descendant) with this activity.
            at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2195)
            at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
            at android.app.ActivityThread.access$800(ActivityThread.java:135)
            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
            at android.os.Handler.dispatchMessage(Handler.java:102)
            at android.os.Looper.loop(Looper.java:136)
            at android.app.ActivityThread.main(ActivityThread.java:5017)
            at java.lang.reflect.Method.invokeNative(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:515)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
            at dalvik.system.NativeStart.main(Native Method)
     Caused by: java.lang.IllegalStateException: You need to use a Theme.AppCompat theme (or descendant) with this activity.
            at android.support.v7.app.ActionBarActivityDelegate.onCreate(ActionBarActivityDelegate.java:108)
            at android.support.v7.app.ActionBarActivityDelegateICS.onCreate(ActionBarActivityDelegateICS.java:57)
            at android.support.v7.app.ActionBarActivity.onCreate(ActionBarActivity.java:98)
            at b3du.im.myapplication.MyActivity.onCreate(MyActivity.java:11)
            at android.app.Activity.performCreate(Activity.java:5231)
            at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
            at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2159)
            at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
            at android.app.ActivityThread.access$800(ActivityThread.java:135)
            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
            at android.os.Handler.dispatchMessage(Handler.java:102)
            at android.os.Looper.loop(Looper.java:136)
            at android.app.ActivityThread.main(ActivityThread.java:5017)
            at java.lang.reflect.Method.invokeNative(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:515)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
            at dalvik.system.NativeStart.main(Native Method)

解决方案

This is because you are using ActionBarActivity, which requires the AppCompat theme to be applied.

Either use that theme, Or use simple Activity. See a similar issue

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