gpt4 book ai didi

java - 从启动画面到实际的应用程序。不幸的是APP已停止

转载 作者:行者123 更新时间:2023-12-02 05:53:52 26 4
gpt4 key购买 nike

我的第一个 Android 应用程序遇到问题。我不明白为什么,等待 5 秒后,应用程序退出并显示“不幸的是应用程序已停止”。该应用程序非常基本。只需添加并减去 1 个数字即可。但启动时它显示图像。

MainActivity.java

package com.example.helloworld;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

public class MainActivity extends Activity {

int counter;
Button add, sub;
TextView display;


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

counter=0;
add = (Button) findViewById(R.id.bAdd);
sub = (Button) findViewById(R.id.bSub);
display = (TextView) findViewById(R.id.tvDisplay);

add.setOnClickListener(new View.OnClickListener() {

@Override
public void onClick(View v) {
// TODO Auto-generated method stub
counter++;
display.setText("Your total is " + counter);
}
});
sub.setOnClickListener(new View.OnClickListener() {

@Override
public void onClick(View v) {
// TODO Auto-generated method stub
counter--;
display.setText("Your total is " + counter);
}
});
}


@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;
}

}

HelloWorldManifest.java

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.helloworld"
android:versionCode="1"
android:versionName="1.0" >

<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="18" />

<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name=".Splash"
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=".startingPoint"
android:label="@string/app_name" >
<intent-filter>
<action android:name="com.example.helloworld.STARTINGPOINT"/>
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>


</application>

还有 Splash.java 包 com.example.helloworld;

 import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;

public class Splash extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.splash);

Thread timer = new Thread(){
public void run() {
try {
Thread.sleep(5000);

} catch (InterruptedException e) {
e.printStackTrace();
}finally{

Intent openStartingPoint = new Intent("com.example.helloworld.STARTINGPOINT");
startActivity(openStartingPoint);
}
}

};
timer.start();
}

}

日志记录

 04-25 08:25:33.391: D/AndroidRuntime(1016): Shutting down VM
04-25 08:25:33.391: W/dalvikvm(1016): threadid=1: thread exiting with uncaught exception (group=0x41465700)
04-25 08:25:33.471: E/AndroidRuntime(1016): FATAL EXCEPTION: main
04-25 08:25:33.471: E/AndroidRuntime(1016): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.example.helloworld/com.example.helloworld.startingPoint}: java.lang.ClassNotFoundException: Didn't find class "com.example.helloworld.startingPoint" on path: DexPathList[[zip file "/data/app/com.example.helloworld-1.apk"],nativeLibraryDirectories=[/data/app-lib/com.example.helloworld-1, /system/lib]]
04-25 08:25:33.471: E/AndroidRuntime(1016): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2137)
04-25 08:25:33.471: E/AndroidRuntime(1016): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2261)
04-25 08:25:33.471: E/AndroidRuntime(1016): at android.app.ActivityThread.access$600(ActivityThread.java:141)
04-25 08:25:33.471: E/AndroidRuntime(1016): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1256)
04-25 08:25:33.471: E/AndroidRuntime(1016): at android.os.Handler.dispatchMessage(Handler.java:99)
04-25 08:25:33.471: E/AndroidRuntime(1016): at android.os.Looper.loop(Looper.java:137)
04-25 08:25:33.471: E/AndroidRuntime(1016): at android.app.ActivityThread.main(ActivityThread.java:5103)
04-25 08:25:33.471: E/AndroidRuntime(1016): at java.lang.reflect.Method.invokeNative(Native Method)
04-25 08:25:33.471: E/AndroidRuntime(1016): at java.lang.reflect.Method.invoke(Method.java:525)
04-25 08:25:33.471: E/AndroidRuntime(1016): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
04-25 08:25:33.471: E/AndroidRuntime(1016): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
04-25 08:25:33.471: E/AndroidRuntime(1016): at dalvik.system.NativeStart.main(Native Method)
04-25 08:25:33.471: E/AndroidRuntime(1016): Caused by: java.lang.ClassNotFoundException: Didn't find class "com.example.helloworld.startingPoint" on path: DexPathList[[zip file "/data/app/com.example.helloworld-1.apk"],nativeLibraryDirectories=[/data/app-lib/com.example.helloworld-1, /system/lib]]
04-25 08:25:33.471: E/AndroidRuntime(1016): at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:53)
04-25 08:25:33.471: E/AndroidRuntime(1016): at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
04-25 08:25:33.471: E/AndroidRuntime(1016): at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
04-25 08:25:33.471: E/AndroidRuntime(1016): at android.app.Instrumentation.newActivity(Instrumentation.java:1061)
04-25 08:25:33.471: E/AndroidRuntime(1016): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2128)
04-25 08:25:33.471: E/AndroidRuntime(1016): ... 11 more
04-25 08:35:02.411: D/dalvikvm(1066): GC_FOR_ALLOC freed 52K, 7% free 2631K/2800K, paused 42ms, total 44ms

问题是从启动到实际的应用程序。分开后他们都工作得很好。谢谢

编辑: list 已更改

action android:name=".STARTINGPOINT"

action android:name="com.example.helloworld.STARTINGPOINT" 

因为事情就是这样。我改变了尝试让想法发挥作用。抱歉

最佳答案

从您发布的代码来看,似乎没有“STARTINGPOINT”,只有 Splash 和 MainActivity,需要在 list 中声明。

需要将其添加到您的 list 中:

<activity
android:name=".MainActivity"
android:label="@string/app_name" >
</activity>

并且,在 Splash 中,您需要通过 Intent 启动 MainActivity,

Intent openStartingPoint = new Intent(Splash.this, MainActivity.class);  

其余部分看起来不错,您有任何名为 STARTINGPOINT 的 Activity 吗?或者只是从 list 中删除它:

 <activity
android:name=".startingPoint"
android:label="@string/app_name" >
<intent-filter>
<action android:name=".STARTINGPOINT" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>

编译器无法识别类“STARTINGPOINT”,这是您的异常(exception)情况。

关于java - 从启动画面到实际的应用程序。不幸的是APP已停止,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/23294661/

26 4 0
Copyright 2021 - 2024 cfsdn All Rights Reserved 蜀ICP备2022000587号
广告合作:1813099741@qq.com 6ren.com