PawletOS/app_Settings
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

am d2136f7e: Create a shared preference setting and use it before loading/unloading cache and disable cache if file operations failed in the last launch. A simple if check when reading buffer size from file

Browse Source 
Merge commit 'd2136f7e5da6d36a685f5bed2727f0abdafb70bf' into eclair

* commit 'd2136f7e5da6d36a685f5bed2727f0abdafb70bf':
  Create a shared preference setting and use it before loading/unloading cache
This commit is contained in:
Suchi Amalapurapu
2009-08-18 19:51:39 -07:00
committed by Android Git Automerger
parent 1858ccd804 d2136f7e5d
commit 2c9b21f048
1 changed files with 41 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

50
src/com/android/settings/ManageApplications.java
View File

@@ -27,6 +27,7 @@ import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.SharedPreferences;
import android.content.pm.ApplicationInfo;
import android.content.pm.IPackageStatsObserver;
import android.content.pm.PackageManager;
@@ -103,6 +104,8 @@ public class ManageApplications extends ListActivity implements
DialogInterface.OnClickListener {
// TAG for this activity
private static final String TAG = "ManageApplications";
private static final String PREFS_NAME = "ManageAppsInfo.prefs";
private static final String PREF_DISABLE_CACHE = "disableCache";
// Log information boolean
private boolean localLOGV = Config.LOGV || false;
@@ -1533,7 +1536,7 @@ public class ManageApplications extends ListActivity implements
private static final String mFileCacheName="ManageAppsInfo.txt";
private static final int FILE_BUFFER_SIZE = 1024;
private static final boolean DEBUG_CACHE = false;
private static final boolean DEBUG_CACHE_TIME = true;
private static final boolean DEBUG_CACHE_TIME = false;
private Map<String, AppInfo> mAppPropCache = new HashMap<String, AppInfo>();
private boolean isEmpty() {
@@ -1581,6 +1584,10 @@ public class ManageApplications extends ListActivity implements
while(fis.available() > 0) {
fis.read(lenBytes, 0, 2);
int buffLen = (lenBytes[0] << 8) | lenBytes[1];
if ((buffLen <= 0) || (buffLen > byteBuff.length)) {
err = true;
break;
}
// Buffer length cannot be great then max.
fis.read(byteBuff, 0, buffLen);
String buffStr = new String(byteBuff);
@@ -1617,17 +1624,18 @@ public class ManageApplications extends ListActivity implements
fis.close();
} catch (IOException e) {
Log.w(TAG, "Failed to close file " + cacheFile + " with exception : " +e);
err = true;
}
}
}
if (err) {
Log.i(TAG, "Failed to load cache. Not using cache for now.");
// Clear cache and bail out
mAppPropCache.clear();
if (err) {
Log.i(TAG, "Failed to load cache. Not using cache for now.");
// Clear cache and bail out
mAppPropCache.clear();
}
}
}
void writeToFile() {
boolean writeToFile() {
File cacheFile = new File(getFilesDir(), mFileCacheName);
FileOutputStream fos = null;
try {
@@ -1662,34 +1670,58 @@ public class ManageApplications extends ListActivity implements
fos.write(byteBuff, 0, len);
} catch (IOException e) {
Log.w(TAG, "Failed to write to file : " + cacheFile + " with exception : " + e);
return false;
}
}
if (DEBUG_CACHE_TIME) {
Log.i(TAG, "Took " + (SystemClock.uptimeMillis() - opStartTime) + " ms to write and process from file");
}
return true;
} catch (FileNotFoundException e) {
Log.w(TAG, "Error opening file for write operation : " + cacheFile+
" with exception : " + e);
return false;
} finally {
if (fos != null) {
try {
fos.close();
} catch (IOException e) {
Log.w(TAG, "Failed closing file : " + cacheFile + " with exception : " + e);
return false;
}
}
}
}
private void loadCache() {
if (FILE_CACHE) {
// Restore preferences
SharedPreferences settings = getSharedPreferences(PREFS_NAME, 0);
boolean disable = settings.getBoolean(PREF_DISABLE_CACHE, true);
if (disable) Log.w(TAG, "Cache has been disabled");
// Disable cache till the data is loaded successfully
SharedPreferences.Editor editor = settings.edit();
editor.putBoolean(PREF_DISABLE_CACHE, true);
editor.commit();
if (FILE_CACHE && !disable) {
readFromFile();
// Enable cache since the file has been read successfully
editor.putBoolean(PREF_DISABLE_CACHE, false);
editor.commit();
}
}
private void updateCache() {
SharedPreferences settings = getSharedPreferences(PREFS_NAME, 0);
SharedPreferences.Editor editor = settings.edit();
editor.putBoolean(PREF_DISABLE_CACHE, true);
editor.commit();
if (FILE_CACHE) {
writeToFile();
boolean writeStatus = writeToFile();
mAppPropCache.clear();
if (writeStatus) {
// Enable cache since the file has been read successfully
editor.putBoolean(PREF_DISABLE_CACHE, false);
editor.commit();
}
}
}
}