[英]android: can't play video
我正在嘗試在Android應用程序上播放視頻,但是當我通過菜單列表單擊活動時,該應用程序會停留在列表上,並且不會播放視頻。 代碼如下
我的菜單
package com.example.taekwondobuddy.util;
import android.app.ListActivity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.ListView;
public class Kicks extends ListActivity {
String classes[] = {"FrontKick","RoundhouseKick","AxeKick"} ;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setListAdapter(new ArrayAdapter<String>(Kicks.this, android.R.layout.simple_list_item_1, classes));
}
@Override
protected void onListItemClick(ListView l, View v, int position, long id) {
// TODO Auto-generated method stub
super.onListItemClick(l, v, position, id);
String cheese = classes[position];
try{
Class ourclass = Class.forName("com.example.taekwondobuddy.util" + cheese);
Intent ourIntent = new Intent(Kicks.this, ourclass);
startActivity(ourIntent);
} catch(ClassNotFoundException e){
e.printStackTrace();
}
}
}
我正在嘗試播放的視頻
package com.example.taekwondobuddy.util;
import android.app.Activity;
import android.net.Uri;
import android.os.Bundle;
import android.widget.MediaController;
import android.widget.VideoView;
public class RoundhouseKick extends Activity {
private VideoView mVideoView;
@Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
setContentView(R.layout.roundhousekick);
mVideoView = (VideoView) findViewById(R.id.roundhousekick);
mVideoView.setVideoURI(Uri.parse("android.resource://" + getPackageName() +"/"+R.raw.roundhousekick));
mVideoView.setMediaController(new MediaController(this));
mVideoView.requestFocus();
}
}
xml布局
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<VideoView
android:id="@+id/roundhousekick"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
和清單
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.taekwondobuddy.util"
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="com.example.taekwondobuddy.util.Menu"
android:configChanges="orientation|keyboardHidden|screenSize"
android:label="@string/app_name"
android:theme="@style/FullscreenTheme" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name="com.example.taekwondobuddy.util.Tools"
android:configChanges="orientation|keyboardHidden|screenSize"
android:label="@string/app_name"
android:theme="@style/FullscreenTheme" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name="com.example.taekwondobuddy.util.Techniques"
android:configChanges="orientation|keyboardHidden|screenSize"
android:label="@string/app_name"
android:theme="@style/FullscreenTheme" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name="com.example.taekwondobuddy.util.Kicks"
android:configChanges="orientation|keyboardHidden|screenSize"
android:label="@string/app_name"
android:theme="@style/FullscreenTheme" >
</activity>
<activity
android:name="com.example.taekwondobuddy.util.Counter"
android:configChanges="orientation|keyboardHidden|screenSize"
android:label="@string/app_name"
android:theme="@style/FullscreenTheme" >
</activity>
<activity
android:name="com.example.taekwondobuddy.util.Time"
android:configChanges="orientation|keyboardHidden|screenSize"
android:label="@string/app_name"
android:theme="@style/FullscreenTheme" >
</activity>
<activity
android:name="com.example.taekwondobuddy.util.Accelermeter"
android:configChanges="orientation|keyboardHidden|screenSize"
android:label="@string/app_name"
android:theme="@style/FullscreenTheme" >
</activity>
<activity
android:name="com.example.taekwondobuddy.util.FrontKick"
android:configChanges="orientation|keyboardHidden|screenSize"
android:label="@string/app_name"
android:theme="@style/FullscreenTheme" >
</activity>
<activity
android:name="com.example.taekwondobuddy.util.RoundhouseKick"
android:configChanges="orientation|keyboardHidden|screenSize"
android:label="@string/app_name"
android:theme="@style/FullscreenTheme" >
</activity>
<activity
android:name="com.example.taekwondobuddy.util.AxeKick"
android:configChanges="orientation|keyboardHidden|screenSize"
android:label="@string/app_name"
android:theme="@style/FullscreenTheme" >
</activity>
</application>
</manifest>
我認為清單有問題,但我真的看不到有什么問題嗎? 再加上視頻是mp4格式的,所以它們的格式適用於android
我認為,您只是錯過了一件小事情:點(。)
在此處查看您的代碼:
Class ourclass = Class.forName("com.example.taekwondobuddy.util" + cheese);
您不認為應該是這樣的:
Class ourclass = Class.forName("com.example.taekwondobuddy.util." + cheese);
嘗試使用:
mVideoView.start();
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