Question

我正在编写一个应用程序，其上有4个视频，当我播放第一个视频时一切正常，但是当我尝试播放第二个视频时，它说应用程序已经意外停止，并且即时使用了一些代码在2个活动中。我没有发现任何错误，是我的第一个程序，非常感谢您提前我把代码放在下面：

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>

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.MenÃº_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>

Java Class :: 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.MenÃº_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

你的问题在于：

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

试试并说..

VideoView没有响应，Eclipse Android

1 个答案: