3d503e356f
have open file references on the sdcard. We also have to check for apps on sd that are currently running. Use the new ActivityManager api to get a list of these apps before deciding to show the dialog. Change-Id: Idb00fcbd0a3f314d75ee1662cb2b10a84569527a
336 lines
14 KiB
Java
336 lines
14 KiB
Java
/*
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* Copyright (C) 2008 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.settings.deviceinfo;
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import android.app.ActivityManager;
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import android.app.AlertDialog;
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import android.app.Dialog;
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import android.content.BroadcastReceiver;
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import android.content.Context;
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import android.content.DialogInterface;
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import android.content.Intent;
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import android.content.IntentFilter;
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import android.content.DialogInterface.OnCancelListener;
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import android.content.pm.ApplicationInfo;
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import android.content.pm.PackageManager;
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import android.content.pm.PackageManager.NameNotFoundException;
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import android.content.res.Resources;
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import android.os.Bundle;
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import android.os.Handler;
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import android.os.IBinder;
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import android.os.Message;
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import android.os.RemoteException;
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import android.os.Environment;
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import android.os.storage.IMountService;
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import android.os.ServiceManager;
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import android.os.StatFs;
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import android.os.storage.StorageManager;
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import android.os.storage.StorageEventListener;
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import android.preference.Preference;
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import android.preference.PreferenceActivity;
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import android.preference.PreferenceScreen;
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import android.text.format.Formatter;
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import android.util.Log;
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import android.widget.Toast;
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import com.android.settings.R;
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import java.io.File;
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import java.util.HashSet;
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import java.util.List;
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import java.util.Set;
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public class Memory extends PreferenceActivity implements OnCancelListener {
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private static final String TAG = "Memory";
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private static final boolean localLOGV = false;
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private static final String MEMORY_SD_SIZE = "memory_sd_size";
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private static final String MEMORY_SD_AVAIL = "memory_sd_avail";
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private static final String MEMORY_SD_MOUNT_TOGGLE = "memory_sd_mount_toggle";
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private static final String MEMORY_SD_FORMAT = "memory_sd_format";
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private static final int DLG_CONFIRM_UNMOUNT = 1;
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private static final int DLG_ERROR_UNMOUNT = 2;
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private Resources mRes;
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private Preference mSdSize;
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private Preference mSdAvail;
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private Preference mSdMountToggle;
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private Preference mSdFormat;
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// Access using getMountService()
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private IMountService mMountService = null;
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private StorageManager mStorageManager = null;
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@Override
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protected void onCreate(Bundle icicle) {
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super.onCreate(icicle);
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if (mStorageManager == null) {
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mStorageManager = (StorageManager) getSystemService(Context.STORAGE_SERVICE);
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mStorageManager.registerListener(mStorageListener);
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}
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addPreferencesFromResource(R.xml.device_info_memory);
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mRes = getResources();
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mSdSize = findPreference(MEMORY_SD_SIZE);
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mSdAvail = findPreference(MEMORY_SD_AVAIL);
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mSdMountToggle = findPreference(MEMORY_SD_MOUNT_TOGGLE);
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mSdFormat = findPreference(MEMORY_SD_FORMAT);
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}
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@Override
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protected void onResume() {
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super.onResume();
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IntentFilter intentFilter = new IntentFilter(Intent.ACTION_MEDIA_SCANNER_STARTED);
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intentFilter.addAction(Intent.ACTION_MEDIA_SCANNER_FINISHED);
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intentFilter.addDataScheme("file");
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registerReceiver(mReceiver, intentFilter);
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updateMemoryStatus();
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}
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StorageEventListener mStorageListener = new StorageEventListener() {
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@Override
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public void onStorageStateChanged(String path, String oldState, String newState) {
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Log.i(TAG, "Received storage state changed notification that " +
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path + " changed state from " + oldState +
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" to " + newState);
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updateMemoryStatus();
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}
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};
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@Override
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protected void onPause() {
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super.onPause();
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unregisterReceiver(mReceiver);
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}
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@Override
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protected void onDestroy() {
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if (mStorageManager != null && mStorageListener != null) {
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mStorageManager.unregisterListener(mStorageListener);
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}
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super.onDestroy();
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}
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private synchronized IMountService getMountService() {
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if (mMountService == null) {
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IBinder service = ServiceManager.getService("mount");
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if (service != null) {
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mMountService = IMountService.Stub.asInterface(service);
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} else {
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Log.e(TAG, "Can't get mount service");
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}
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}
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return mMountService;
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}
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@Override
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public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen, Preference preference) {
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if (preference == mSdMountToggle) {
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String status = Environment.getExternalStorageState();
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if (status.equals(Environment.MEDIA_MOUNTED)) {
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unmount();
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} else {
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mount();
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}
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return true;
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} else if (preference == mSdFormat) {
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Intent intent = new Intent(Intent.ACTION_VIEW);
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intent.setClass(this, com.android.settings.MediaFormat.class);
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startActivity(intent);
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return true;
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}
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return false;
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}
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private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
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@Override
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public void onReceive(Context context, Intent intent) {
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updateMemoryStatus();
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}
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};
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@Override
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public Dialog onCreateDialog(int id, Bundle args) {
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switch (id) {
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case DLG_CONFIRM_UNMOUNT:
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return new AlertDialog.Builder(this)
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.setTitle(R.string.dlg_confirm_unmount_title)
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.setPositiveButton(R.string.dlg_ok, new DialogInterface.OnClickListener() {
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public void onClick(DialogInterface dialog, int which) {
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doUnmount(true);
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}})
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.setNegativeButton(R.string.cancel, null)
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.setMessage(R.string.dlg_confirm_unmount_text)
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.setOnCancelListener(this)
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.create();
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case DLG_ERROR_UNMOUNT:
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return new AlertDialog.Builder(this )
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.setTitle(R.string.dlg_error_unmount_title)
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.setNeutralButton(R.string.dlg_ok, null)
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.setMessage(R.string.dlg_error_unmount_text)
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.setOnCancelListener(this)
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.create();
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}
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return null;
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}
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private void doUnmount(boolean force) {
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// Present a toast here
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Toast.makeText(this, R.string.unmount_inform_text, Toast.LENGTH_SHORT).show();
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IMountService mountService = getMountService();
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String extStoragePath = Environment.getExternalStorageDirectory().toString();
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try {
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mSdMountToggle.setEnabled(false);
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mSdMountToggle.setTitle(mRes.getString(R.string.sd_ejecting_title));
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mSdMountToggle.setSummary(mRes.getString(R.string.sd_ejecting_summary));
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mountService.unmountVolume(extStoragePath, force);
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} catch (RemoteException e) {
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// Informative dialog to user that
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// unmount failed.
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showDialogInner(DLG_ERROR_UNMOUNT);
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}
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}
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private void showDialogInner(int id) {
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removeDialog(id);
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showDialog(id);
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}
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private boolean hasAppsAccessingStorage() throws RemoteException {
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String extStoragePath = Environment.getExternalStorageDirectory().toString();
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IMountService mountService = getMountService();
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boolean showPidDialog = false;
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int stUsers[] = mountService.getStorageUsers(extStoragePath);
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if (stUsers != null && stUsers.length > 0) {
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return true;
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}
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ActivityManager am = (ActivityManager)getSystemService(Context.ACTIVITY_SERVICE);
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List<ApplicationInfo> list = am.getRunningExternalApplications();
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if (list != null && list.size() > 0) {
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return true;
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}
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return false;
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}
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private void unmount() {
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// Check if external media is in use.
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try {
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if (hasAppsAccessingStorage()) {
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if (localLOGV) Log.i(TAG, "Do have storage users accessing media");
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// Present dialog to user
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showDialogInner(DLG_CONFIRM_UNMOUNT);
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} else {
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doUnmount(true);
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}
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} catch (RemoteException e) {
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// Very unlikely. But present an error dialog anyway
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Log.e(TAG, "Is MountService running?");
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showDialogInner(DLG_ERROR_UNMOUNT);
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}
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}
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private void mount() {
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IMountService mountService = getMountService();
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try {
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if (mountService != null) {
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mountService.mountVolume(Environment.getExternalStorageDirectory().toString());
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} else {
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Log.e(TAG, "Mount service is null, can't mount");
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}
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} catch (RemoteException ex) {
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}
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}
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private void updateMemoryStatus() {
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String status = Environment.getExternalStorageState();
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String readOnly = "";
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if (status.equals(Environment.MEDIA_MOUNTED_READ_ONLY)) {
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status = Environment.MEDIA_MOUNTED;
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readOnly = mRes.getString(R.string.read_only);
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}
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mSdFormat.setEnabled(false);
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if (status.equals(Environment.MEDIA_MOUNTED)) {
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try {
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File path = Environment.getExternalStorageDirectory();
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StatFs stat = new StatFs(path.getPath());
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long blockSize = stat.getBlockSize();
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long totalBlocks = stat.getBlockCount();
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long availableBlocks = stat.getAvailableBlocks();
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mSdSize.setSummary(formatSize(totalBlocks * blockSize));
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mSdAvail.setSummary(formatSize(availableBlocks * blockSize) + readOnly);
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mSdMountToggle.setEnabled(true);
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mSdMountToggle.setTitle(mRes.getString(R.string.sd_eject));
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mSdMountToggle.setSummary(mRes.getString(R.string.sd_eject_summary));
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} catch (IllegalArgumentException e) {
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// this can occur if the SD card is removed, but we haven't received the
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// ACTION_MEDIA_REMOVED Intent yet.
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status = Environment.MEDIA_REMOVED;
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}
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} else {
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mSdSize.setSummary(mRes.getString(R.string.sd_unavailable));
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mSdAvail.setSummary(mRes.getString(R.string.sd_unavailable));
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if (status.equals(Environment.MEDIA_UNMOUNTED) ||
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status.equals(Environment.MEDIA_NOFS) ||
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status.equals(Environment.MEDIA_UNMOUNTABLE) ) {
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mSdFormat.setEnabled(true);
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mSdMountToggle.setEnabled(true);
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mSdMountToggle.setTitle(mRes.getString(R.string.sd_mount));
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mSdMountToggle.setSummary(mRes.getString(R.string.sd_mount_summary));
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} else {
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mSdMountToggle.setEnabled(false);
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mSdMountToggle.setTitle(mRes.getString(R.string.sd_mount));
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mSdMountToggle.setSummary(mRes.getString(R.string.sd_insert_summary));
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}
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}
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File path = Environment.getDataDirectory();
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StatFs stat = new StatFs(path.getPath());
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long blockSize = stat.getBlockSize();
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long availableBlocks = stat.getAvailableBlocks();
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findPreference("memory_internal_avail").setSummary(formatSize(availableBlocks * blockSize));
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}
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private String formatSize(long size) {
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return Formatter.formatFileSize(this, size);
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}
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public void onCancel(DialogInterface dialog) {
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finish();
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}
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}
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