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我刚刚尝试在过去几天学习Java。我一直在跳过教程等，试图拿起一些基础知识。需要帮助解决为什么我的简单应用崩溃
目前它在启动屏幕上启动5秒钟，然后转到另一个Action（是正确的术语？），它是主页（称为StartingPoint）。然而它在这两页之间跳跃时崩溃。所以基本上，我的问题是为什么它这样做，我该如何解决它？
我首先创建了主页面，并且可以自行工作。只是在这两页之间跳转时才会发生。
清单 - 修正：
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.jonysapp.test"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="15" />
<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>
</application>
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="com.jonysapp.test.StartingPoint"
android:label="@string/app_name" >
<intent-filter>
<action android:name="com.jonysapp.test.StartingPoint" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
</application>
Splash.xml：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:background="@drawable/mirley"
>
</LinearLayout>
Splash.Java：我有一种感觉的编码是错误的在这里的某个地方。也许在Try Catch Finally？
package com.jonysapp.test;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
public class Splash extends Activity{
@Override
protected void onCreate(Bundle MirleysVariable) {
// TODO Auto-generated method stub
super.onCreate(MirleysVariable);
setContentView(R.layout.splash);
Thread timer = new Thread(){
public void run(){
try{
sleep(5000);
} catch (InterruptedException e){
e.printStackTrace();
}finally{
Intent openStartingPoint = new Intent(Splash.this, StartingPoint.class);
Splash.this.startActivity(openStartingPoint);
}
}
};
timer.start();
}
}
StartingPoint.Java
package com.jonysapp.test;
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 StartingPoint extends Activity {
int counter;
Button add, sub;
TextView display;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_starting_point);
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.starting_point, menu);
return true;
}
}
logcat的：
04-21 12:48:08.004: D/dalvikvm(31290): GC_FOR_ALLOC freed 66K, 3% free 8887K/9091K, paused 16ms
04-21 12:48:08.014: I/dalvikvm-heap(31290): Grow heap (frag case) to 10.280MB for 1639696-byte allocation
04-21 12:48:08.044: D/dalvikvm(31290): GC_CONCURRENT freed 1K, 3% free 10487K/10759K, paused 2ms+2ms
04-21 12:48:08.084: D/TextLayoutCache(31290): Using debug level: 0 - Debug Enabled: 0
04-21 12:48:08.134: D/libEGL(31290): loaded /system/lib/egl/libGLES_android.so
04-21 12:48:08.134: D/libEGL(31290): loaded /system/lib/egl/libEGL_adreno200.so
04-21 12:48:08.144: D/libEGL(31290): loaded /system/lib/egl/libGLESv1_CM_adreno200.so
04-21 12:48:08.144: D/libEGL(31290): loaded /system/lib/egl/libGLESv2_adreno200.so
04-21 12:48:08.174: D/OpenGLRenderer(31290): Enabling debug mode 0
04-21 12:48:13.094: W/dalvikvm(31290): threadid=11: thread exiting with uncaught exception (group=0x2b542210)
04-21 12:48:13.094: E/AndroidRuntime(31290): FATAL EXCEPTION: Thread-2196
04-21 12:48:13.094: E/AndroidRuntime(31290): android.content.ActivityNotFoundException: Unable to find explicit activity class {com.jonysapp.test/com.jonysapp.test.StartingPoint}; have you declared this activity in your AndroidManifest.xml?
04-21 12:48:13.094: E/AndroidRuntime(31290): at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1508)
04-21 12:48:13.094: E/AndroidRuntime(31290): at android.app.Instrumentation.execStartActivity(Instrumentation.java:1384)
04-21 12:48:13.094: E/AndroidRuntime(31290): at android.app.Activity.startActivityForResult(Activity.java:3190)
04-21 12:48:13.094: E/AndroidRuntime(31290): at android.app.Activity.startActivity(Activity.java:3297)
04-21 12:48:13.094: E/AndroidRuntime(31290): at com.jonysapp.test.Splash$1.run(Splash.java:23)
04-21 12:48:13.364: D/OpenGLRenderer(31290): Flushing caches (mode 0)
04-21 12:48:13.404: D/OpenGLRenderer(31290): Flushing caches (mode 1)
它很可能我已经发布了太多的代码这个问题，所以我道歉，如果我有这个轰炸页面太多。虽然如果我错过了任何重要的帮助，请让我知道！
作为一个侧面说明，如果您有任何提示，以阻止我进入任何不良的生活习惯与编码到目前为止，这将是又升值（但不是必要的）
感谢您的帮助！
这是上帝的方式告诉你，闪屏是邪恶的;）http://cyrilmottier.com/2012/05/03/splash-screens-are-evil-dont-use-them/ – Simon 2013-04-21 12:30:34
哈哈！那么我在这一方面当然与神同在！出于兴趣，有什么替代（和更好）的方式来做这种事情而不是闪屏？ – 2013-04-21 13:05:01
什么样的事情？故意拖延开始和用户获取UI之间的时间？使用受限资源？我可以想到很多方法，但很少有人这么做;） – Simon 2013-04-21 13:23:09