我从服务器下载文件，然后将它们保存在内部。一旦我想播放视频，该应用就会破坏此错误日志
当它到达这一行时它会像人类一样破坏：或者在它之后，即使我删除了这一行
videoView.setVisibility(View.VISIBLE);
02-20 17:18:29.533: I/media player(26499): play media!
02-20 17:18:29.533: I/FILENAME(26499): video_tvr_webtrailer2.mp4
02-20 17:18:29.533: I/media player(26499): play video!
02-20 17:18:29.533: W/dalvikvm(26499): threadid=11: thread exiting with uncaught exception (group=0x40bf31f8)
02-20 17:18:29.533: E/AndroidRuntime(26499): FATAL EXCEPTION: Thread-7014
02-20 17:18:29.533: E/AndroidRuntime(26499): android.view.ViewRootImpl$CalledFromWrongThreadException: Only the original thread that created a view hierarchy can touch its views.
02-20 17:18:29.533: E/AndroidRuntime(26499): at android.view.ViewRootImpl.checkThread(ViewRootImpl.java:4142)
02-20 17:18:29.533: E/AndroidRuntime(26499): at android.view.ViewRootImpl.requestLayout(ViewRootImpl.java:762)
02-20 17:18:29.533: E/AndroidRuntime(26499): at android.view.View.requestLayout(View.java:12727)
02-20 17:18:29.533: E/AndroidRuntime(26499): at android.view.View.requestLayout(View.java:12727)
02-20 17:18:29.533: E/AndroidRuntime(26499): at android.view.View.requestLayout(View.java:12727)
02-20 17:18:29.533: E/AndroidRuntime(26499): at android.view.View.requestLayout(View.java:12727)
02-20 17:18:29.533: E/AndroidRuntime(26499): at android.view.View.requestLayout(View.java:12727)
02-20 17:18:29.533: E/AndroidRuntime(26499): at android.view.View.setFlags(View.java:6767)
02-20 17:18:29.533: E/AndroidRuntime(26499): at android.view.View.setVisibility(View.java:4664)
02-20 17:18:29.533: E/AndroidRuntime(26499): at android.view.SurfaceView.setVisibility(SurfaceView.java:235)
02-20 17:18:29.533: E/AndroidRuntime(26499): at com.example.tvrplayer.MainActivity.playMedia(MainActivity.java:163)
02-20 17:18:29.533: E/AndroidRuntime(26499): at com.example.tvrplayer.MainActivity.createPlayList(MainActivity.java:184)
02-20 17:18:29.533: E/AndroidRuntime(26499): at com.example.tvrplayer.MainActivity.access$1(MainActivity.java:170)
02-20 17:18:29.533: E/AndroidRuntime(26499): at com.example.tvrplayer.MainActivity$2.run(MainActivity.java:228)
02-20 17:18:34.572: D/OpenGLRenderer(26499): Flushing caches (mode 0)
02-20 17:18:36.291: D/OpenGLRenderer(26499): Flushing caches (mode 1)
这是我的代码：
package com.example.tvrplayer;
import java.io.File;
import java.io.FileDescriptor;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
import java.text.DateFormat.Field;
import java.util.ArrayList;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import android.media.MediaPlayer;
import android.media.MediaPlayer.OnCompletionListener;
import android.net.Uri;
import android.os.Bundle;
import android.os.Handler;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
import android.content.ContextWrapper;
import android.content.res.AssetFileDescriptor;
import android.graphics.drawable.AnimationDrawable;
import android.widget.ImageView;
import android.widget.VideoView;
import android.util.Log;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.view.WindowManager;
public class MainActivity extends Activity implements OnCompletionListener {
int playListIndex;
int currentMedia;
String mediaName;
ArrayList<Integer> playList = new ArrayList<Integer>();
File[] filelist;
private VideoView videoView;
private ImageView imageView;
Uri mediaPath;
private Handler mHandler = new Handler();
// Get this shit from login!
public String channelid = "5e6d-e673-46b1-9ffd-a16600d58fc9";
public String username = "sd@ere.co";
public String linkid = "70sd3f-e054-4f33-9b6b-a16600d3f7d7";
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
File mediadir = getDir("tvr", Context.MODE_PRIVATE);
// filelist = mediadir.listFiles();
try {
getProgramList();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
// Delete all files in folder
if (mediadir.isDirectory()) {
String[] children = mediadir.list();
for (int i = 0; i < children.length; i++) {
new File(mediadir, children[i]).delete();
}
}
// videoView = (VideoView) findViewById(R.id.videoView);
// videoView.setVisibility(View.VISIBLE);
// videoView.setOnCompletionListener(this);
// String path = "android.resource://" + getPackageName() + "/" + R.raw.tvr_webtrailer2;
// Uri uri = Uri.parse(path);
// videoView.setVideoURI(uri);
// videoView.start();
// currentMedia = 1;
// createPlayList(this);
// try {
// getProgramList(this);
// } catch (IOException e) {
// e.printStackTrace();
// } catch (JSONException e) {
// e.printStackTrace();
// }
// are there any files? if not download some, still not? keep checking every few seconds.
// try {
// getProgramList(this);
// } catch (IOException e1) {
// // TODO Auto-generated catch block
// e1.printStackTrace();
// } catch (JSONException e1) {
// // TODO Auto-generated catch block
// e1.printStackTrace();
// }
// createPlayList(this);
// currentMedia = 1;
// try {
////
// playMedia(this, currentMedia);
// } catch (IOException e) {
// // TODO Auto-generated catch block
// e.printStackTrace();
// }
}
@Override
public void onCompletion(MediaPlayer mp) {
Log.i("media player", "play next please!");
if (mp != null) {
videoView.setVisibility(View.GONE);
}
// play next video
currentMedia++;
if (currentMedia > playList.size() - 1) {
currentMedia = 0;
}
Log.d("MEDIA_COUNTER", String.format("%d", currentMedia));
try {
playMedia(currentMedia);
} catch (IOException e) {
e.printStackTrace();
}
}
private void playMedia(int playListIndex) throws IOException {
Log.i("media player", "play media!");
// int resourceID = filelist.get(playListIndex); // This is the resource id
// String path = "android.resource://" + getPackageName() + "/" + resourceID;
String path = filelist[playListIndex].getAbsolutePath();
final Uri uri = Uri.parse(path);
String filename = filelist[playListIndex].getName();
Log.i("FILENAME",filename);
if (filename.contains("image")) {
imageView = (ImageView)findViewById(R.id.imageView);
imageView.setVisibility(View.VISIBLE);
// imageView.setImageURI(uri);
mHandler.postDelayed(new Runnable() {
public void run() {
imageView.setVisibility(View.GONE);
imageView.setImageURI(uri);
onCompletion(null);
}
}, 3000);
} else if (filename.contains("video")) {
Log.i("media player", "play video!");
videoView = (VideoView) findViewById(R.id.videoView);
videoView.setVisibility(View.VISIBLE);
videoView.setOnCompletionListener(this);
videoView.setVideoPath(path);
videoView.start();
}
}
private void createPlayList(Context context) {
ContextWrapper cw = new ContextWrapper(context);
File mediadir = cw.getDir("tvr", Context.MODE_PRIVATE);
filelist = mediadir.listFiles();
if (filelist != null)
{
for ( int i = 0;i<filelist.length;i++)
{
Log.i("FOKKER", filelist[i].getName());
Log.i("FOKKER", filelist[i].getAbsolutePath());
}
}
currentMedia = 0;
try {
playMedia(currentMedia);
} catch (IOException e) {
e.printStackTrace();
}
// java.lang.reflect.Field[] fields = R.raw.class.getFields();
// for(java.lang.reflect.Field f : fields)
// try {
// playList.add(f.getInt(null));
// } catch (IllegalArgumentException e) {
// } catch (IllegalAccessException e) { }
}
private void downloadMedia() throws IOException, JSONException {
getProgramList();
}
private void getProgramList () throws IOException, JSONException {
Thread thread = new Thread() {
@Override
public void run() {
ContextWrapper cw = new ContextWrapper(getBaseContext());
File mediadir = cw.getDir("tvr", Context.MODE_PRIVATE);
JSONArray json = Json.getJson("http://192.168.2.136:8080/rest/program/"+ linkid +"/"+ username +"/" + channelid, "GET");
try {
for (int i=0; i < json.length(); i++) {
JSONObject json_data = json.getJSONObject(i);
String name = json_data.getString("Name").toLowerCase();
name = name.replace("-", "_");
if (name.contains("mp4")) {
name = "/video_"+name;
} else if (name.contains("png") || name.contains("jpg") || name.contains("jpeg")) {
name = "/image_"+name;
}
File file = new File(mediadir, name);
if(file.exists()) {} else {
download(this, name, "http://192.168.2.136:8080/rest/transfer/"+ linkid +"/"+ username +"/" + json_data.getString("ID"));
}
}
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
createPlayList(cw);
}
private void download(Thread thread, String name, String urlString) {
File mediadir = getDir("tvr", Context.MODE_PRIVATE);
try {
URL url = new URL(urlString);
URLConnection conexion = url.openConnection();
conexion.connect();
int lenghtOfFile = conexion.getContentLength();
InputStream is = url.openStream();
Log.d("DOWNLOAD NAME",name);
FileOutputStream fos = new FileOutputStream(mediadir+name);
byte data[] = new byte[1024];
int count = 0;
long total = 0;
int progress = 0;
while ((count=is.read(data)) != -1){
total += count;
int progress_temp = (int)total*100/lenghtOfFile;
if(progress_temp%10 == 0 && progress != progress_temp){
progress = progress_temp;
}
fos.write(data, 0, count);
}
is.close();
fos.close();
} catch (Exception e) {
// TODO Auto-generated catch block
Log.e("DOWNLOAD", e.toString());
}
}
};
thread.start();
}
}
答案 0 :(得分：1)
这意味着从您的线程中，您似乎触摸或使用您的ui中的视图。 我不确定它会是什么，我需要好好看看。
最好的办法是将所有UI内容保留在线程之外。
答案 1 :(得分：1)
试试这个：
MainActivity.this.runOnUiThread(new Runnable()
{
public void run()
{
Log.i("media player", "play video!");
videoView = (VideoView) findViewById(R.id.videoView);
videoView.setVisibility(View.VISIBLE);
videoView.setOnCompletionListener(this);
videoView.setVideoPath(path);
videoView.start();
}
});
如果它有效，那么你可能想尝试重构一下你的代码，以使其更好。