VideoView它没有响应，Eclipse Android

Question

当我播放第一个视频时，编程一个应用程序，它有4个视频，一切正常，但是当我尝试播放第二个视频时，它说应用程序意外停止，并即时使用2个活动中的一些代码。我没有发现任何错误，是我的第一个程序，预先感谢您 非常喜欢，我把代码波纹管：

布局XML：primeraventana.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" > 

<TextView 
android:id="@+id/textview1" 
android:layout_width="fill_parent" 
android:layout_height="wrap_content" 
android:text="@string/Escala_Uno" /> 

<VideoView 
android:id="@+id/videoView1" 
android:layout_width="match_parent" 
android:layout_height="254dp" /> 

<Button 
android:id="@+id/boton3" 
android:layout_width="fill_parent" 
android:layout_height="wrap_content" 
android:text="@string/Menú_Principal" /> 

</LinearLayout> 

的Java类：primeraventana.java

package gabrielrojas.com; 



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


import android.view.View; 
import android.view.View.OnClickListener; 
import android.widget.Button; 
import android.widget.MediaController; 
import android.widget.TextView; 
import android.widget.VideoView; 
import android.net.Uri; 

public class primeraventana extends Activity { 

@Override 
public void onCreate(Bundle savedInstanceState) { 
super.onCreate(savedInstanceState); 
setContentView(R.layout.primeraventana); 

VideoView mVideoView = (VideoView) findViewById(R.id.videoView1); 
mVideoView.setVideoURI(Uri.parse("android.resource://" + getPackageName() 
+"/"+R.raw.test)); 
mVideoView.setMediaController(new MediaController(this)); 
mVideoView.requestFocus(); 
mVideoView.start();  
mVideoView.isPlaying(); 
mVideoView.stopPlayback(); 
mVideoView.clearFocus(); 

TextView text = (TextView) findViewById(R.id.textview1); 
Button boton3 = (Button) findViewById(R.id.boton3); 

text.setText(R.string.Escala_Uno); 

boton3.setText(R.string.Menú_Principal); 


boton3.setOnClickListener(new OnClickListener() { 
     public void onClick(View v) { 
      finish(); 

}}); }} 

布局XML :: segundaventana.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" > 

<TextView 
android:id="@+id/textview2" 
android:layout_width="fill_parent" 
android:layout_height="wrap_content" 
android:text="@string/Escala_Dos"/> 

<VideoView 
android:id="@+id/videoView2" 
android:layout_width="match_parent" 
android:layout_height="254dp" /> 

<Button 
android:id="@+id/boton4" 
android:layout_width="fill_parent" 
android:layout_height="wrap_content" 
android:text="@string/Menú_Principal"/> 


</LinearLayout> 

的Javaç姑娘:: segundaventana.java

package gabrielrojas.com; 



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


import android.view.View; 
import android.view.View.OnClickListener; 
import android.widget.Button; 
import android.widget.MediaController; 
import android.widget.TextView; 
import android.widget.VideoView; 
import android.net.Uri; 

public class segundaventana extends Activity { 

@Override 
public void onCreate(Bundle savedInstanceState) { 
super.onCreate(savedInstanceState); 
setContentView(R.layout.primeraventana); 

VideoView mVideoView = (VideoView) findViewById(R.id.videoView2); 
mVideoView.setVideoURI(Uri.parse("android.resource://" + getPackageName() 
+"/"+R.raw.test)); 
mVideoView.setMediaController(new MediaController(this)); 
mVideoView.requestFocus(); 
mVideoView.start();  
mVideoView.isPlaying(); 
mVideoView.stopPlayback(); 
mVideoView.clearFocus(); 

TextView text = (TextView) findViewById(R.id.textview2); 
Button boton4 = (Button) findViewById(R.id.boton4); 

text.setText(R.string.Escala_Dos); 

boton4.setText(R.string.Menú_Principal); 


boton4.setOnClickListener(new OnClickListener() { 
     public void onClick(View v) { 
      finish(); 

}}); }} 

AndroidManifest

<manifest xmlns:android="http://schemas.android.com/apk/res/android" 
package="gabrielrojas.com" 
android:versionCode="1" 
android:versionName="1.0" > 

<uses-sdk 
    android:minSdkVersion="7" 
    android:targetSdkVersion="15" /> 

<application 
    android:icon="@drawable/ic_launcher" 
    android:label="@string/app_name" 
    android:theme="@style/AppTheme" > 
    <activity 
     android:name=".PruebaNumero3" 
     android:label="@string/title_activity_prueba_numero3" > 
     <intent-filter> 
      <action android:name="android.intent.action.MAIN" /> 

      <category android:name="android.intent.category.LAUNCHER" /> 
     </intent-filter> 
    </activity> 
    <activity android:name=".primeraventana"/> 
    <activity android:name=".segundaventana" /> 
    <activity android:name=".terceraventana" /> 
    <activity android:name=".cuartaventana" /> 
    <activity android:name=".VideoActivity" 
       android:label="@string/app_name" 
       android:screenOrientation="landscape" 
       android:theme="@android:style/Theme.NoTitleBar" 
       android:noHistory="true"/> 
</application> 

</manifest> 

Answer 1

你的问题就在这里：

Setting the layout: 



public class segundaventana extends Activity { 

@Override 
public void onCreate(Bundle savedInstanceState) { 
super.onCreate(savedInstanceState); 
setContentView(R.layout.primeraventana);-------------------------> Here lies your problem 

更改为：

public class segundaventana extends Activity { 

    @Override 
    public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.segundaventana);---------------------->this layout contains your videoview2 

试试吧，说..