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/*
* Copyright (C) 2008 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.settings.deviceinfo;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.res.Resources;
import android.os.Bundle;
import android.os.IBinder;
import android.os.RemoteException;
import android.os.Environment;
import android.os.IMountService;
import android.os.ServiceManager;
import android.os.StatFs;
import android.preference.Preference;
import android.preference.PreferenceActivity;
import android.preference.PreferenceScreen;
import android.util.Log;
import com.android.settings.R;
import java.io.File;
import java.text.DecimalFormat;
public class Memory extends PreferenceActivity {
private static final String TAG = "Memory";
private static final String MEMORY_SD_SIZE = "memory_sd_size";
private static final String MEMORY_SD_AVAIL = "memory_sd_avail";
private static final String MEMORY_SD_UNMOUNT = "memory_sd_unmount";
private static final String MEMORY_SD_FORMAT = "memory_sd_format";
private Resources mRes;
private Preference mSdSize;
private Preference mSdAvail;
private Preference mSdUnmount;
private Preference mSdFormat;
// Access using getMountService()
private IMountService mMountService = null;
@Override
protected void onCreate(Bundle icicle) {
super.onCreate(icicle);
addPreferencesFromResource(R.xml.device_info_memory);
mRes = getResources();
mSdSize = findPreference(MEMORY_SD_SIZE);
mSdAvail = findPreference(MEMORY_SD_AVAIL);
mSdUnmount = findPreference(MEMORY_SD_UNMOUNT);
mSdFormat = findPreference(MEMORY_SD_FORMAT);
}
@Override
protected void onResume() {
super.onResume();
IntentFilter intentFilter = new IntentFilter(Intent.ACTION_MEDIA_REMOVED);
intentFilter.addAction(Intent.ACTION_MEDIA_UNMOUNTED);
intentFilter.addAction(Intent.ACTION_MEDIA_MOUNTED);
intentFilter.addAction(Intent.ACTION_MEDIA_SHARED);
intentFilter.addAction(Intent.ACTION_MEDIA_BAD_REMOVAL);
intentFilter.addAction(Intent.ACTION_MEDIA_UNMOUNTABLE);
intentFilter.addAction(Intent.ACTION_MEDIA_NOFS);
intentFilter.addAction(Intent.ACTION_MEDIA_SCANNER_STARTED);
intentFilter.addAction(Intent.ACTION_MEDIA_SCANNER_FINISHED);
intentFilter.addDataScheme("file");
registerReceiver(mReceiver, intentFilter);
updateMemoryStatus();
}
@Override
protected void onPause() {
super.onPause();
unregisterReceiver(mReceiver);
}
private synchronized IMountService getMountService() {
if (mMountService == null) {
IBinder service = ServiceManager.getService("mount");
if (service != null) {
mMountService = IMountService.Stub.asInterface(service);
} else {
Log.e(TAG, "Can't get mount service");
}
}
return mMountService;
}
@Override
public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen, Preference preference) {
if (preference == mSdUnmount) {
unmount();
return true;
} else if (preference == mSdFormat) {
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setClass(this, com.android.settings.MediaFormat.class);
startActivity(intent);
return true;
}
return false;
}
private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
updateMemoryStatus();
}
};
private void unmount() {
IMountService mountService = getMountService();
try {
if (mountService != null) {
mountService.unmountMedia(Environment.getExternalStorageDirectory().toString());
} else {
Log.e(TAG, "Mount service is null, can't unmount");
}
} catch (RemoteException ex) {
// Failed for some reason, try to update UI to actual state
updateMemoryStatus();
}
}
private void updateMemoryStatus() {
String status = Environment.getExternalStorageState();
String readOnly = "";
if (status.equals(Environment.MEDIA_MOUNTED_READ_ONLY)) {
status = Environment.MEDIA_MOUNTED;
readOnly = mRes.getString(R.string.read_only);
}
mSdFormat.setEnabled(false);
if (status.equals(Environment.MEDIA_MOUNTED)) {
try {
File path = Environment.getExternalStorageDirectory();
StatFs stat = new StatFs(path.getPath());
long blockSize = stat.getBlockSize();
long totalBlocks = stat.getBlockCount();
long availableBlocks = stat.getAvailableBlocks();
mSdSize.setSummary(formatSize(totalBlocks * blockSize));
mSdAvail.setSummary(formatSize(availableBlocks * blockSize) + readOnly);
mSdUnmount.setEnabled(true);
} catch (IllegalArgumentException e) {
// this can occur if the SD card is removed, but we haven't received the
// ACTION_MEDIA_REMOVED Intent yet.
status = Environment.MEDIA_REMOVED;
}
} else {
mSdSize.setSummary(mRes.getString(R.string.sd_unavailable));
mSdAvail.setSummary(mRes.getString(R.string.sd_unavailable));
mSdUnmount.setEnabled(false);
if (status.equals(Environment.MEDIA_UNMOUNTED) ||
status.equals(Environment.MEDIA_NOFS) ||
status.equals(Environment.MEDIA_UNMOUNTABLE) ) {
mSdFormat.setEnabled(true);
}
}
File path = Environment.getDataDirectory();
StatFs stat = new StatFs(path.getPath());
long blockSize = stat.getBlockSize();
long availableBlocks = stat.getAvailableBlocks();
findPreference("memory_internal_avail").setSummary(formatSize(availableBlocks * blockSize));
}
private String formatSize(long size) {
String suffix = null;
// add KB or MB suffix if size is greater than 1K or 1M
if (size >= 1024) {
suffix = " KB";
size /= 1024;
if (size >= 1024) {
suffix = " MB";
size /= 1024;
}
}
DecimalFormat formatter = new DecimalFormat();
formatter.setGroupingSize(3);
String result = formatter.format(size);
if (suffix != null)
result = result + suffix;
return result;
}
}
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