我在android中创建一个应用程序。在第一个活动中，它显示视频列表并在youtube上...
但是，当我点击该列表并控制转移到下一个活动时，我正在将该视频的URL转移到下一个活动。每件事情都正常但视频没有显示......我正在使用视频视图控件。但是当我看到LogCat文件时，会向我显示以下错误...
我已将互联网许可写入我的清单文件
<uses-permission android:name="android.permission.INTERNET" />
但仍然有错误。（应用程序不显示错误）
logcat的：
12-09 21:13:10.905: V/VideoViewDemo(2559): path: http://www.youtube.com/watch?v=i5Fsnv6wHJo
12-09 21:13:12.865: E/VideoViewDemo(2559): error: Permission denied
12-09 21:13:12.865: E/VideoViewDemo(2559): java.io.IOException: Permission denied
12-09 21:13:12.865: E/VideoViewDemo(2559): at java.io.File.createNewFileImpl(Native Method)
12-09 21:13:12.865: E/VideoViewDemo(2559): at java.io.File.createNewFile(File.java:1257)
12-09 21:13:12.865: E/VideoViewDemo(2559): at java.io.File.createTempFile(File.java:1322)
12-09 21:13:12.865: E/VideoViewDemo(2559): at java.io.File.createTempFile(File.java:1278)
12-09 21:13:12.865: E/VideoViewDemo(2559): at com.pxr.tutorial.xmltest.Watch_Video.getDataSource(Watch_Video.java:180)
12-09 21:13:12.865: E/VideoViewDemo(2559): at com.pxr.tutorial.xmltest.Watch_Video.playVideo(Watch_Video.java:157)
12-09 21:13:12.865: E/VideoViewDemo(2559): at com.pxr.tutorial.xmltest.Watch_Video.access$0(Watch_Video.java:141)
12-09 21:13:12.865: E/VideoViewDemo(2559): at com.pxr.tutorial.xmltest.Watch_Video$5.run(Watch_Video.java:135)
12-09 21:13:12.865: E/VideoViewDemo(2559): at android.app.Activity.runOnUiThread(Activity.java:3717)
12-09 21:13:12.865: E/VideoViewDemo(2559): at com.pxr.tutorial.xmltest.Watch_Video.onCreate(Watch_Video.java:133)
12-09 21:13:12.865: E/VideoViewDemo(2559): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
12-09 21:13:12.865: E/VideoViewDemo(2559): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1611)
12-09 21:13:12.865: E/VideoViewDemo(2559): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663)
12-09 21:13:12.865: E/VideoViewDemo(2559): at android.app.ActivityThread.access$1500(ActivityThread.java:117)
12-09 21:13:12.865: E/VideoViewDemo(2559): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931)
12-09 21:13:12.865: E/VideoViewDemo(2559): at android.os.Handler.dispatchMessage(Handler.java:99)
12-09 21:13:12.865: E/VideoViewDemo(2559): at android.os.Looper.loop(Looper.java:123)
12-09 21:13:12.865: E/VideoViewDemo(2559): at android.app.ActivityThread.main(ActivityThread.java:3683)
12-09 21:13:12.865: E/VideoViewDemo(2559): at java.lang.reflect.Method.invokeNative(Native Method)
12-09 21:13:12.865: E/VideoViewDemo(2559): at java.lang.reflect.Method.invoke(Method.java:507)
12-09 21:13:12.865: E/VideoViewDemo(2559): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
12-09 21:13:12.865: E/VideoViewDemo(2559): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
12-09 21:13:12.865: E/VideoViewDemo(2559): at dalvik.system.NativeStart.main(Native Method)
主文件代码：
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.listplaceholder);
String str=getIntent().getExtras().getString("Category").toString();
ArrayList<HashMap<String, String>> mylist = new ArrayList<HashMap<String, String>>();
String xml = XMLfunctions.getXML(str);
Document doc = XMLfunctions.XMLfromString(xml);
int numResults = XMLfunctions.numResults(doc);
if((numResults <= 0)){
Toast.makeText(CategoryDetail.this, "Geen resultaten gevonden", Toast.LENGTH_LONG).show();
finish();
}
NodeList nodes = doc.getElementsByTagName("video1");
for (int i = 0; i < nodes.getLength(); i++) {
HashMap<String, String> map = new HashMap<String, String>();
Element e = (Element)nodes.item(i);
map.put("iVid", XMLfunctions.getValue(e, "iVid"));
map.put("vVName", XMLfunctions.getValue(e, "vVName"));
map.put("vSource", XMLfunctions.getValue(e, "vSource"));
mylist.add(map);
}
ListAdapter adapter = new SimpleAdapter(this, mylist , R.layout.category_detail,
new String[] { "vVName" },
new int[] { R.id.item_title });
setListAdapter(adapter);
final ListView lv = getListView();
lv.setTextFilterEnabled(true);
lv.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
@SuppressWarnings("unchecked")
HashMap<String, String> o = (HashMap<String, String>) lv.getItemAtPosition(position);
//Toast.makeText(CategoryDetail.this, "Video '" + o.get("vVName") + "' is just clicked.", Toast.LENGTH_LONG).show();
Intent intent=new Intent(CategoryDetail.this, Watch_Video.class);
intent.putExtra("url", o.get("vSource"));
startActivity(intent);
//Toast.makeText(CategoryDetail.this,"This is Url" + o.get("vSource"), Toast.LENGTH_LONG).show();
//Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse("http://www.youtube.com/watch?v=nLJYkat4HpE"));
//startActivity(intent);
}
});
}
第二个活动文件：
mVideoView = (VideoView) findViewById(R.id.surface_view);
mPath=getIntent().getExtras().getString("url");
//mPath = (EditText) findViewById(R.id.path);
//mPath.setText("http://daily3gp.com/vids/747.3gp");
Toast.makeText(Watch_Video.this,"This is Url" + mPath.toString(), Toast.LENGTH_LONG).show();
mPlay = (ImageButton) findViewById(R.id.play);
mPause = (ImageButton) findViewById(R.id.pause);
mReset = (ImageButton) findViewById(R.id.reset);
mStop = (ImageButton) findViewById(R.id.stop);
mPlay.setOnClickListener(new OnClickListener() {
public void onClick(View view) {
playVideo();
}
});
mPause.setOnClickListener(new OnClickListener() {
public void onClick(View view) {
if (mVideoView != null) {
mVideoView.pause();
}
}
});
mReset.setOnClickListener(new OnClickListener() {
public void onClick(View view) {
if (mVideoView != null) {
mVideoView.seekTo(0);
}
}
});
mStop.setOnClickListener(new OnClickListener() {
public void onClick(View view) {
if (mVideoView != null) {
current = null;
mVideoView.stopPlayback();
}
}
});
runOnUiThread(new Runnable(){
public void run() {
playVideo();
}});
}
private void playVideo() {
try {
final String path = mPath.toString();
Log.v(TAG, "path: " + path);
if (path == null || path.length() == 0) {
Toast.makeText(Watch_Video.this, "File URL/path is empty",
Toast.LENGTH_LONG).show();
} else {
// If the path has not changed, just start the media player
if (path.equals(current) && mVideoView != null) {
mVideoView.start();
mVideoView.requestFocus();
return;
}
current = path;
mVideoView.setVideoPath(getDataSource(path));
mVideoView.start();
mVideoView.requestFocus();
}
} catch (Exception e) {
Log.e(TAG, "error: " + e.getMessage(), e);
if (mVideoView != null) {
mVideoView.stopPlayback();
}
}
}
private String getDataSource(String path) throws IOException {
if (!URLUtil.isNetworkUrl(path)) {
return path;
} else {
URL url = new URL(path);
URLConnection cn = url.openConnection();
cn.connect();
InputStream stream = cn.getInputStream();
if (stream == null)
throw new RuntimeException("stream is null");
File temp = File.createTempFile("mediaplayertmp", "dat");
temp.deleteOnExit();
String tempPath = temp.getAbsolutePath();
FileOutputStream out = new FileOutputStream(temp);
byte buf[] = new byte[128];
do {
int numread = stream.read(buf);
if (numread <= 0)
break;
out.write(buf, 0, numread);
} while (true);
try {
stream.close();
} catch (IOException ex) {
Log.e(TAG, "error: " + ex.getMessage(), ex);
}
return tempPath;
}
答案 0 :(得分：7)
尝试将以下权限添加到清单文件中：
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />