如果我运行我的项目，则表明此logcat错误...如何解决此错误。请帮帮我......
log cat：`
04-28 15:19:01.210: DEBUG/AndroidRuntime(376): >>>>>>>>>>>>>> AndroidRuntime START
<<<<<<<<<<<<<<
04-28 15:19:01.210: DEBUG/AndroidRuntime(376): CheckJNI is ON
04-28 15:19:01.619: DEBUG/AndroidRuntime(376): --- registering native functions ---
04-28 15:19:02.170: INFO/ActivityManager(60): Process com.android.email (pid 228) has
died.
04-28 15:19:03.340: DEBUG/dalvikvm(178): GC_EXPLICIT freed 78 objects / 8216 bytes in
111ms
04-28 15:19:03.439: DEBUG/PackageParser(60): Scanning package: /data/app/vmdl15137.tmp
04-28 15:19:03.469: INFO/PackageParser(60): com.isummation.igallery: compat added
android.permission.WRITE_EXTERNAL_STORAGE android.permission.READ_PHONE_STATE
04-28 15:19:03.669: INFO/PackageManager(60): Removing non-system
package:com.isummation.igallery
04-28 15:19:03.669: INFO/ActivityManager(60): Force stopping package
com.isummation.igallery uid=10062
04-28 15:19:03.689: INFO/Process(60): Sending signal. PID: 363 SIG: 9
04-28 15:19:03.779: WARN/InputManagerService(60): Window already focused, ignoring
focus gain of: com.android.internal.view.IInputMethodClient$Stub$Proxy@43f2ac48
04-28 15:19:04.599: DEBUG/PackageManager(60): Scanning package com.isummation.igallery
04-28 15:19:04.609: INFO/PackageManager(60): Package com.isummation.igallery codePath
changed from /data/app/com.isummation.igallery-1.apk to /data/app
/com.isummation.igallery-2.apk; Retaining data and using new
04-28 15:19:04.629: INFO/PackageManager(60): /data/app/com.isummation.igallery-2.apk
changed; unpacking
04-28 15:19:04.670: DEBUG/installd(35): DexInv: --- BEGIN '/data
/app/com.isummation.igallery-2.apk' ---
04-28 15:19:05.240: DEBUG/dalvikvm(383): DexOpt: load 67ms, verify 154ms, opt 4ms
04-28 15:19:05.260: DEBUG/installd(35): DexInv: --- END '/data
/app/com.isummation.igallery-2.apk' (success) ---
04-28 15:19:05.260: WARN/PackageManager(60): Code path for pkg :
com.isummation.igallery changing from /data/app/com.isummation.igallery-1.apk to
/data/app/com.isummation.igallery-2.apk
04-28 15:19:05.270: WARN/PackageManager(60): Resource path for pkg :
com.isummation.igallery changing from /data/app/com.isummation.igallery-1.apk to
/data/app/com.isummation.igallery-2.apk
04-28 15:19:05.270: DEBUG/PackageManager(60): Activities:
com.isummation.igallery.MyGallery
04-28 15:19:05.280: INFO/ActivityManager(60): Force stopping package
com.isummation.igallery uid=10062
04-28 15:19:05.839: DEBUG/dalvikvm(60): GC_FOR_MALLOC freed 7590 objects / 469992
bytes in 202ms
04-28 15:19:06.040: INFO/installd(35): move /data/dalvik-
cache/data@app@com.isummation.igallery-2.apk@classes.dex -> /data/dalvik-
cache/data@app@com.isummation.igallery-2.apk@classes.dex
04-28 15:19:06.050: DEBUG/PackageManager(60): New package installed in /data/app
/com.isummation.igallery-2.apk
04-28 15:19:06.569: INFO/ActivityManager(60): Force stopping package
com.isummation.igallery uid=10062
04-28 15:19:06.769: DEBUG/dalvikvm(127): GC_EXPLICIT freed 1464 objects / 82560 bytes
in 154ms
04-28 15:19:07.489: DEBUG/dalvikvm(60): GC_EXPLICIT freed 5017 objects / 301832
bytes in 253ms
04-28 15:19:07.499: INFO/installd(35): unlink /data/dalvik-
cache/data@app@com.isummation.igallery-1.apk@classes.dex
04-28 15:19:07.679: DEBUG/AndroidRuntime(376): Shutting down VM
04-28 15:19:07.699: DEBUG/dalvikvm(376): Debugger has detached; object registry had 1
entries
04-28 15:19:07.759: INFO/AndroidRuntime(376): NOTE: attach of thread 'Binder Thread
#3' failed
04-28 15:19:07.809: WARN/RecognitionManagerService(60): no available voice
recognition services found
04-28 15:19:09.150: DEBUG/AndroidRuntime(389): >>>>>>>>>>>>>> AndroidRuntime START
<<<<<<<<<<<<<<
04-28 15:19:09.150: DEBUG/AndroidRuntime(389): CheckJNI is ON
04-28 15:19:09.529: DEBUG/AndroidRuntime(389): --- registering native functions ---
04-28 15:19:10.929: INFO/ActivityManager(60): Starting activity: Intent {
act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10000000
cmp=com.isummation.igallery/.MyGallery }
04-28 15:19:11.050: DEBUG/AndroidRuntime(389): Shutting down VM
04-28 15:19:11.080: DEBUG/dalvikvm(389): Debugger has detached; object registry had 1
entries
04-28 15:19:11.170: INFO/AndroidRuntime(389): NOTE: attach of thread 'Binder Thread
#3' failed
04-28 15:19:11.280: INFO/ActivityManager(60): Start proc com.isummation.igallery for
activity com.isummation.igallery/.MyGallery: pid=396 uid=10062 gids={3003, 1015}
04-28 15:19:11.909: DEBUG/dalvikvm(33): GC_EXPLICIT freed 277 objects / 10608 bytes in
594ms
04-28 15:19:12.290: DEBUG/dalvikvm(33): GC_EXPLICIT freed 37 objects / 1600 bytes in
303ms
04-28 15:19:12.759: DEBUG/dalvikvm(33): GC_EXPLICIT freed 2 objects / 64 bytes in 469ms
04-28 15:19:13.560: INFO/ActivityManager(60): Displayed activity
com.isummation.igallery/.MyGallery: 2543 ms (total 2543 ms)
04-28 15:19:14.040: WARN/dalvikvm(396): threadid=7: thread exiting with uncaught
exception (group=0x4001d800)
04-28 15:19:14.080: ERROR/AndroidRuntime(396): FATAL EXCEPTION: AsyncTask #1
04-28 15:19:14.080: ERROR/AndroidRuntime(396): java.lang.RuntimeException: An error
occured while executing doInBackground()
04-28 15:19:14.080: ERROR/AndroidRuntime(396): at
android.os.AsyncTask$3.done(AsyncTask.java:200)
04-28 15:19:14.080: ERROR/AndroidRuntime(396): at
java.util.concurrent.FutureTask$Sync.innerSetException(FutureTask.java:273)
04-28 15:19:14.080: ERROR/AndroidRuntime(396): at
java.util.concurrent.FutureTask.setException(FutureTask.java:124)
04-28 15:19:14.080: ERROR/AndroidRuntime(396): at
java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:307)
04-28 15:19:14.080: ERROR/AndroidRuntime(396): at
java.util.concurrent.FutureTask.run(FutureTask.java:137)
04-28 15:19:14.080: ERROR/AndroidRuntime(396): at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1068)
04-28 15:19:14.080: ERROR/AndroidRuntime(396): at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:561)
04-28 15:19:14.080: ERROR/AndroidRuntime(396): at
java.lang.Thread.run(Thread.java:1096)
04-28 15:19:14.080: ERROR/AndroidRuntime(396): Caused by: java.lang.RuntimeException:
Can't create handler inside thread that has not called Looper.prepare()
04-28 15:19:14.080: ERROR/AndroidRuntime(396): at android.os.Handler.<init>
(Handler.java:121)
04-28 15:19:14.080: ERROR/AndroidRuntime(396): at android.widget.Toast.<init>
(Toast.java:68)
04-28 15:19:14.080: ERROR/AndroidRuntime(396): at
android.widget.Toast.makeText(Toast.java:231)
04-28 15:19:14.080: ERROR/AndroidRuntime(396): at
com.isummation.igallery.MyGallery.LoadThumbnailFromURL(MyGallery.java:115)
04-28 15:19:14.080: ERROR/AndroidRuntime(396): at
com.isummation.igallery.MyGallery.access$2(MyGallery.java:93)
04-28 15:19:14.080: ERROR/AndroidRuntime(396): at
com.isummation.igallery.MyGallery$AddImageTask.doInBackground(MyGallery.java:75)
04-28 15:19:14.080: ERROR/AndroidRuntime(396): at
com.isummation.igallery.MyGallery$AddImageTask.doInBackground(MyGallery.java:1)
04-28 15:19:14.080: ERROR/AndroidRuntime(396): at
android.os.AsyncTask$2.call(AsyncTask.java:185)
04-28 15:19:14.080: ERROR/AndroidRuntime(396): at
java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
04-28 15:19:14.080: ERROR/AndroidRuntime(396): ... 4 more
04-28 15:19:14.110: WARN/ActivityManager(60): Force finishing activity
com.isummation.igallery/.MyGallery
04-28 15:19:20.090: DEBUG/dalvikvm(178): GC_EXPLICIT freed 167 objects / 11912 bytes
in 130ms
04-28 15:19:25.110: DEBUG/dalvikvm(262): GC_EXPLICIT freed 29 objects / 1488 bytes
in 143ms
我的编码：
package com.isummation.igallery;
import java.io.InputStream;
import java.net.URL;
import java.net.URLConnection;
import java.util.ArrayList;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.entity.BufferedHttpEntity;
import org.apache.http.impl.client.DefaultHttpClient;
import android.app.Activity;
import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.BaseAdapter;
import android.widget.Gallery;
import android.widget.ImageView;
import android.widget.Toast;
public class MyGallery extends Activity {
private ImageAdapter imageAdapter;
private ArrayList<String> PhotoURLS = new ArrayList<String>();
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
imageAdapter = new ImageAdapter(this);
final ImageView imgView = (ImageView) findViewById(R.id.GalleryView);
Gallery g = (Gallery) findViewById(R.id.Gallery);
g.setAdapter(imageAdapter);
g.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View v,
int position, long id) {
imgView.setImageDrawable(LoadImageFromURL(PhotoURLS
.get(position)));
imgView.setScaleType(ImageView.ScaleType.FIT_CENTER);
}
});
// replace this code to set your image urls in list
PhotoURLS.add("http://10.0.2.2/upload/3BC52DAA-AFD8-50B5-DA5096B82422275F.jpg");
PhotoURLS.add("http://10.0.2.2/upload/B652F78D-C760-B674-7A6E61E505A05A0F.jpg");
new AddImageTask().execute();
}
class AddImageTask extends AsyncTask<Void, Void, Void> {
@Override
protected Void doInBackground(Void... unused) {
for (String url : PhotoURLS) {
String filename = url.substring(url.lastIndexOf("/") + 1,
url.length());
filename = "th_" + filename;
String thumburl = url.substring(0, url.lastIndexOf("/") + 1);
imageAdapter.addItem(LoadThumbnailFromURL(thumburl + filename));
publishProgress();
//SystemClock.sleep(200);
}
return (null);
}
@Override
protected void onProgressUpdate(Void... unused) {
imageAdapter.notifyDataSetChanged();
}
@Override
protected void onPostExecute(Void unused) {
}
}
private Drawable LoadThumbnailFromURL(String url) {
try {
URLConnection connection = new URL(url).openConnection();
String contentType = connection.getHeaderField("Content-Type");
boolean isImage = contentType.startsWith("image/");
if(isImage){
HttpGet httpRequest = new HttpGet(url);
HttpClient httpclient = new DefaultHttpClient();
HttpResponse response = (HttpResponse) httpclient
.execute(httpRequest);
HttpEntity entity = response.getEntity();
BufferedHttpEntity bufferedHttpEntity = new BufferedHttpEntity(entity);
InputStream is = bufferedHttpEntity.getContent();
Drawable d = Drawable.createFromStream(is, "src Name");
return d;
} else {
Bitmap b = BitmapFactory.decodeResource(getResources(),
R.drawable.no_image);
Drawable d = new BitmapDrawable(b);
return d;
}
} catch (Exception e) {
Toast.makeText(getApplicationContext(), "error", Toast.LENGTH_LONG)
.show();
Log.e(e.getClass().getName(), e.getMessage(), e);
return null;
}
}
private Drawable LoadImageFromURL(String url) {
try {
URLConnection connection = new URL(url).openConnection();
String contentType = connection.getHeaderField("Content-Type");
boolean isImage = contentType.startsWith("image/");
if(isImage){
HttpGet httpRequest = new HttpGet(url);
HttpClient httpclient = new DefaultHttpClient();
HttpResponse response = (HttpResponse) httpclient
.execute(httpRequest);
HttpEntity entity = response.getEntity();
BufferedHttpEntity bufferedHttpEntity = new BufferedHttpEntity(
entity);
InputStream is = bufferedHttpEntity.getContent();
// Decode image size
BitmapFactory.Options o = new BitmapFactory.Options();
o.inJustDecodeBounds = true;
BitmapFactory.decodeStream(is, null, o);
// The new size we want to scale to
final int REQUIRED_SIZE = 150;
// Find the correct scale value. It should be the power of 2.
int width_tmp = o.outWidth, height_tmp = o.outHeight;
int scale = 1;
while (true) {
if (width_tmp / 2 < REQUIRED_SIZE
|| height_tmp / 2 < REQUIRED_SIZE)
break;
width_tmp /= 2;
height_tmp /= 2;
scale *= 2;
}
// Decode with inSampleSize
is = bufferedHttpEntity.getContent();
BitmapFactory.Options o2 = new BitmapFactory.Options();
o2.inSampleSize = scale;
Bitmap b = BitmapFactory.decodeStream(is, null, o2);
Drawable d = new BitmapDrawable(b);
return d;
} else {
Bitmap b = BitmapFactory.decodeResource(getResources(),
R.drawable.no_image);
Drawable d = new BitmapDrawable(b);
return d;
}
} catch (Exception e) {
Toast.makeText(getApplicationContext(), "error", Toast.LENGTH_LONG)
.show();
Log.e(e.getClass().getName(), e.getMessage(), e);
return null;
}
}
public class ImageAdapter extends BaseAdapter {
int mGalleryItemBackground;
private Context mContext;
ArrayList<Drawable> drawablesFromUrl = new ArrayList<Drawable>();
public ImageAdapter(Context c) {
mContext = c;
TypedArray a = obtainStyledAttributes(R.styleable.GalleryTheme);
mGalleryItemBackground = a.getResourceId(
R.styleable.GalleryTheme_android_galleryItemBackground, 0);
a.recycle();
}
public void addItem(Drawable item) {
drawablesFromUrl.add(item);
}
public int getCount() {
return drawablesFromUrl.size();
}
public Drawable getItem(int position) {
return drawablesFromUrl.get(position);
}
public long getItemId(int position) {
return position;
}
public View getView(int position, View convertView, ViewGroup parent) {
ImageView i = new ImageView(mContext);
i.setImageDrawable(drawablesFromUrl.get(position));
i.setLayoutParams(new Gallery.LayoutParams(80, 70));
i.setScaleType(ImageView.ScaleType.FIT_CENTER);
i.setBackgroundResource(mGalleryItemBackground);
return i;
}
}
}
答案 0 :(得分：1)
您无法从UI线程显示非Toast（并且通常会修改UI）。在AsyncTask中，您有特殊的方法：onPreExecute（），onPostExecute和onProgressUpdate()。