我不知道为什么我得到这些堆栈跟踪错误。我的问题是现在我无法查看图像。
堆栈跟踪：
E/ImageFetcher(1309): processBitmap - java.lang.IllegalStateException:
edit didn't create file 0
E/Error(1309) : org.json.JSONException: End of input at character 2 of
E/ImageFetcher(1309): Error in downloadBitmap - java.net.ProtocolException: unexpected end of stream
E/ImageFetcher(1309): Error in downloadBitmap - java.net.ProtocolException: unexpected end of stream
E/ImageFetcher(1309): processBitmap - java.io.FileNotFoundException: /storage/sdcard/Android/data/com.gems.android/cache/http/ec1de446b4ed202c22d7c762f1746668.0.tmp: fstat failed: ENOENT (No such file or directory)
ImageFetcher.java：
package com.sit.fth.util;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileDescriptor;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import android.content.Context;
import android.graphics.Bitmap;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.os.Build;
//import android.util.Log;
import android.widget.Toast;
import com.gems.android.BuildConfig;
public class ImageFetcher extends ImageResizer {
private static final String TAG = "ImageFetcher";
private static final int HTTP_CACHE_SIZE = 10 * 1024 * 1024; // 10MB
private static final String HTTP_CACHE_DIR = "http";
private static final int IO_BUFFER_SIZE = 8 * 1024;
private DiskLruCache mHttpDiskCache;
private File mHttpCacheDir;
private boolean mHttpDiskCacheStarting = true;
private final Object mHttpDiskCacheLock = new Object();
private static final int DISK_CACHE_INDEX = 0;
public ImageFetcher(Context context, int imageWidth, int imageHeight) {
super(context, imageWidth, imageHeight);
init(context);
}
public ImageFetcher(Context context, int imageSize) {
super(context, imageSize);
init(context);
}
private void init(Context context) {
checkConnection(context);
mHttpCacheDir = ImageCache.getDiskCacheDir(context, HTTP_CACHE_DIR);
}
@Override
protected void initDiskCacheInternal() {
super.initDiskCacheInternal();
initHttpDiskCache();
}
private void initHttpDiskCache() {
if (!mHttpCacheDir.exists()) {
mHttpCacheDir.mkdirs();
}
synchronized (mHttpDiskCacheLock) {
if (ImageCache.getUsableSpace(mHttpCacheDir) > HTTP_CACHE_SIZE) {
try {
mHttpDiskCache = DiskLruCache.open(mHttpCacheDir, 1, 1, HTTP_CACHE_SIZE);
if (BuildConfig.DEBUG) {
AppLog.d(TAG, "HTTP cache initialized");
}
} catch (IOException e) {
mHttpDiskCache = null;
}
}
mHttpDiskCacheStarting = false;
mHttpDiskCacheLock.notifyAll();
}
}
@Override
protected void clearCacheInternal() {
super.clearCacheInternal();
synchronized (mHttpDiskCacheLock) {
if (mHttpDiskCache != null && !mHttpDiskCache.isClosed()) {
try {
mHttpDiskCache.delete();
if (BuildConfig.DEBUG) {
AppLog.d(TAG, "HTTP cache cleared");
}
} catch (IOException e) {
AppLog.e(TAG, "clearCacheInternal - " + e);
}
mHttpDiskCache = null;
mHttpDiskCacheStarting = true;
initHttpDiskCache();
}
}
}
@Override
protected void flushCacheInternal() {
super.flushCacheInternal();
synchronized (mHttpDiskCacheLock) {
if (mHttpDiskCache != null) {
try {
mHttpDiskCache.flush();
if (BuildConfig.DEBUG) {
AppLog.d(TAG, "HTTP cache flushed");
}
} catch (IOException e) {
AppLog.e(TAG, "flush - " + e);
}
}
}
}
@Override
protected void closeCacheInternal() {
super.closeCacheInternal();
synchronized (mHttpDiskCacheLock) {
if (mHttpDiskCache != null) {
try {
if (!mHttpDiskCache.isClosed()) {
mHttpDiskCache.close();
mHttpDiskCache = null;
if (BuildConfig.DEBUG) {
AppLog.d(TAG, "HTTP cache closed");
}
}
} catch (IOException e) {
AppLog.e(TAG, "closeCacheInternal - " + e);
}
}
}
}
private void checkConnection(Context context) {
final ConnectivityManager cm =
(ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
final NetworkInfo networkInfo = cm.getActiveNetworkInfo();
if (networkInfo == null || !networkInfo.isConnectedOrConnecting()) {
Toast.makeText(context, "Connection Error", Toast.LENGTH_LONG).show();
AppLog.e(TAG, "checkConnection - no connection found");
}
}
private Bitmap processBitmap(String data) {
if (BuildConfig.DEBUG) {
AppLog.d(TAG, "processBitmap - " + data);
}
final String key = ImageCache.hashKeyForDisk(data);
FileDescriptor fileDescriptor = null;
FileInputStream fileInputStream = null;
DiskLruCache.Snapshot snapshot;
synchronized (mHttpDiskCacheLock) {
// Wait for disk cache to initialize
while (mHttpDiskCacheStarting) {
try {
mHttpDiskCacheLock.wait();
} catch (InterruptedException e) {}
}
if (mHttpDiskCache != null) {
try {
snapshot = mHttpDiskCache.get(key);
if (snapshot == null) {
if (BuildConfig.DEBUG) {
AppLog.d(TAG, "processBitmap, not found in http cache, downloading...");
}
DiskLruCache.Editor editor = mHttpDiskCache.edit(key);
if (editor != null) {
if (downloadUrlToStream(data,
editor.newOutputStream(DISK_CACHE_INDEX))) {
editor.commit();
} else {
editor.abort();
}
}
snapshot = mHttpDiskCache.get(key);
}
if (snapshot != null) {
fileInputStream =
(FileInputStream) snapshot.getInputStream(DISK_CACHE_INDEX);
fileDescriptor = fileInputStream.getFD();
}
} catch (IOException e) {
AppLog.e(TAG, "processBitmap - " + e);
} catch (IllegalStateException e) {
AppLog.e(TAG, "processBitmap - " + e);
} finally {
if (fileDescriptor == null && fileInputStream != null) {
try {
fileInputStream.close();
} catch (IOException e) {}
}
}
}
}
Bitmap bitmap = null;
if (fileDescriptor != null) {
bitmap = decodeSampledBitmapFromDescriptor(fileDescriptor, mImageWidth,
mImageHeight, getImageCache());
}
if (fileInputStream != null) {
try {
fileInputStream.close();
} catch (IOException e) {}
}
return bitmap;
}
@Override
protected Bitmap processBitmap(Object data) {
return processBitmap(String.valueOf(data));
}
public boolean downloadUrlToStream(String urlString, OutputStream outputStream) {
disableConnectionReuseIfNecessary();
HttpURLConnection urlConnection = null;
BufferedOutputStream out = null;
BufferedInputStream in = null;
try {
final URL url = new URL(urlString);
urlConnection = (HttpURLConnection) url.openConnection();
in = new BufferedInputStream(urlConnection.getInputStream(), IO_BUFFER_SIZE);
out = new BufferedOutputStream(outputStream, IO_BUFFER_SIZE);
int b;
while ((b = in.read()) != -1) {
out.write(b);
}
return true;
} catch (final IOException e) {
AppLog.e(TAG, "Error in downloadBitmap - " + e);
} finally {
if (urlConnection != null) {
urlConnection.disconnect();
}
try {
if (out != null) {
out.close();
}
if (in != null) {
in.close();
}
} catch (final IOException e) {}
}
return false;
}
public static void disableConnectionReuseIfNecessary() {
// HTTP connection reuse which was buggy pre-froyo
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.FROYO) {
System.setProperty("http.keepAlive", "false");
}
}
}
清单：
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.gems.android"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="14"
android:targetSdkVersion="19" />
<uses-feature
android:name="android.hardware.touchscreen"
android:required="false" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
<permission
android:name="com.gems.android.permission.C2D_MESSAGE"
android:protectionLevel="signature" />
<uses-permission android:name="com.gems.android.permission.C2D_MESSAGE" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<!-- App receives GCM messages. -->
<uses-permission android:name="com.google.android.c2dm.permission.RECEIVE" />
<!-- GCM connects to Google Services. -->
<uses-permission android:name="android.permission.INTERNET" />
<!-- GCM requires a Google account. -->
<uses-permission android:name="android.permission.GET_ACCOUNTS" />
<!-- Keeps the processor from sleeping when a message is received. -->
<uses-permission android:name="android.permission.WAKE_LOCK" />
<uses-permission android:name="android.permission.VIBRATE" />
<application
android:name="com.sit.fth.app.GemsApplication"
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@android:style/Theme.Holo.Light" >
<activity
android:name="com.sit.fth.activity.SplashActivity"
android:label="@string/app_name"
android:screenOrientation="portrait"
android:theme="@android:style/Theme.Black.NoTitleBar.Fullscreen" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name="com.sit.fth.activity.HomeActivity" >
</activity>
<!-- Parent activity meta-data to support 4.0 and lower -->
<activity android:name="com.sit.fth.activity.GalleryActivity" >
</activity>
<activity android:name="com.sit.fth.activity.AnnouncementActivity" >
</activity>
<activity android:name="com.sit.fth.activity.MagazineActivity" >
</activity>
<activity android:name="com.sit.fth.activity.YoutubePlayActivity" >
</activity>
</application>
</manifest>
它没有显示图像。它似乎总是加载图像。最后我不能将实际图像作为输出。
如果您知道如何解决这些问题，任何人都可以帮助我。谢谢。
答案 0 :(得分：0)
首先在我的emulator two app中有一个same name。我不知道。
这就是我在RunTime获得这些异常的原因。
java.io.FileNotFoundException： /storage/sdcard/Android/data/com.gems.android/cache/http/ec1de446b4ed202c22d7c76 2f1746668.0.tmp： fstat失败：ENOENT（没有这样的文件或目录）
我通过卸载两个相同的应用程序名称并安装当前工作的项目来解决这些问题。