Android is the engineering model, using statistical data in the data can get to?

Dial interface is enter * # * # 4636 # * # * After that, there will be a use of statistical data, in writing android procedures, is there any way you can get these data? ?<-! Main posts under Banner (D4) -><-! Posts under the main text (D5) ->
Reply:
Nobody knows yet. . .
Reply:
I suggest you look at the source code. . . .

 

/ ** 
* Copyright (C) 2007 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; 

import com.android.internal.app.IUsageStats; 
import com.android.settings.R; 
import android.app.Activity; 
import android.content.Context; 
import android.content.pm.ApplicationInfo; 
import android.content.pm.PackageManager; 
import android.content.pm.PackageManager.NameNotFoundException; 
import android.os.Bundle; 
import android.os.RemoteException; 
import android.os.ServiceManager; 
import com.android.internal.os.PkgUsageStats; 
import java.util.ArrayList; 
import java.util.Collections; 
import java.util.Comparator; 
import java.util.HashMap; 
import java.util.List; 
import java.util.Map; 

import android.util.Log; 
import android.view.LayoutInflater; 
import android.view.View; 
import android.view.ViewGroup; 
import android.widget.AdapterView; 
import android.widget.BaseAdapter; 
import android.widget.ListView; 
import android.widget.Spinner; 
import android.widget.TextView; 
import android.widget.AdapterView.OnItemSelectedListener; 

/ ** 
* Activity to display package usage statistics. 
* / 
public class UsageStats extends Activity implements OnItemSelectedListener {
private static final String TAG = "UsageStatsActivity"; 
private static final boolean localLOGV = false; 
private Spinner mTypeSpinner; 
private ListView mListView; 
private IUsageStats mUsageStatsService; 
private LayoutInflater mInflater; 
private UsageStatsAdapter mAdapter; 
private PackageManager mPm; 

public static class AppNameComparator implements Comparator  {
Map  mAppLabelList; 
AppNameComparator (Map  appList) {
mAppLabelList = appList; 
} 
public final int compare (PkgUsageStats a, PkgUsageStats b) {
String alabel = mAppLabelList.get (a.packageName) toString ();. 
String blabel = mAppLabelList.get (b.packageName) toString ();. 
return alabel.compareTo (blabel); 
} 
} 

public static class LaunchCountComparator implements Comparator  {
public final int compare (PkgUsageStats a, PkgUsageStats b) {
/ / Return by descending order 
return b.launchCount - a.launchCount; 
} 
} 

public static class UsageTimeComparator implements Comparator  {
public final int compare (PkgUsageStats a, PkgUsageStats b) {
long ret = a.usageTime-b.usageTime; 
if (ret == 0) {
return 0; 
} 
if (ret <0) {
return 1; 
} 
return -1; 
} 
} 

/ / View Holder used when displaying views 
static class AppViewHolder {
TextView pkgName; 
TextView launchCount; 
TextView usageTime; 
} 

class UsageStatsAdapter extends BaseAdapter {
/ / Constants defining order for display order 
private static final int _DISPLAY_ORDER_USAGE_TIME = 0; 
private static final int _DISPLAY_ORDER_LAUNCH_COUNT = 1; 
private static final int _DISPLAY_ORDER_APP_NAME = 2; 

private int mDisplayOrder = _DISPLAY_ORDER_USAGE_TIME; 
private List  mUsageStats; 
private LaunchCountComparator mLaunchCountComparator; 
private UsageTimeComparator mUsageTimeComparator; 
private AppNameComparator mAppLabelComparator; 
private HashMap  mAppLabelMap; 

UsageStatsAdapter () {
mUsageStats = new ArrayList  (); 
mAppLabelMap = new HashMap  (); 
PkgUsageStats [] stats; 
try {
stats = mUsageStatsService.getAllPkgUsageStats (); 
} Catch (RemoteException e) {
Log.e (TAG, "Failed initializing usage stats service"); 
return; 
} 
if (stats == null) {
return; 
} 
for (PkgUsageStats ps: stats) {
mUsageStats.add (ps); 
/ / Load application labels for each application 
CharSequence label; 
try {
ApplicationInfo appInfo = mPm.getApplicationInfo (ps.packageName, 0); 
label = appInfo.loadLabel (mPm); 
} Catch (NameNotFoundException e) {
label = ps.packageName; 
} 
mAppLabelMap.put (ps.packageName, label); 
} 
/ / Sort list 
mLaunchCountComparator = new LaunchCountComparator (); 
mUsageTimeComparator = new UsageTimeComparator (); 
mAppLabelComparator = new AppNameComparator (mAppLabelMap); 
sortList (); 
} 
public int getCount () {
return mUsageStats.size (); 
} 

public Object getItem (int position) {
return mUsageStats.get (position); 
} 

public long getItemId (int position) {
return position; 
} 

public View getView (int position, View convertView, ViewGroup parent) {
/ / A ViewHolder keeps references to children views to avoid unneccessary calls 
/ / To findViewById () on each row. 
AppViewHolder holder; 

/ / When convertView is not null, we can reuse it directly, there is no need 
/ / To reinflate it. We only inflate a new View when the convertView supplied 
/ / By ListView is null. 
if (convertView == null) {
convertView = mInflater.inflate (R.layout.usage_stats_item, null); 

/ / Creates a ViewHolder and store references to the two children views 
/ / We want to bind data to. 
holder = new AppViewHolder (); 
holder.pkgName = (TextView) convertView.findViewById (R.id.package_name); 
holder.launchCount = (TextView) convertView.findViewById (R.id.launch_count); 
holder.usageTime = (TextView) convertView.findViewById (R.id.usage_time); 
convertView.setTag (holder); 
} Else {
/ / Get the ViewHolder back to get fast access to the TextView 
/ / And the ImageView. 
holder = (AppViewHolder) convertView.getTag (); 
} 

/ / Bind the data efficiently with the holder 
PkgUsageStats pkgStats = mUsageStats.get (position); 
if (pkgStats! = null) {
CharSequence label = mAppLabelMap.get (pkgStats.packageName); 
holder.pkgName.setText (label); 
holder.launchCount.setText (String.valueOf (pkgStats.launchCount)); 
holder.usageTime.setText (String.valueOf (pkgStats.usageTime) + "ms"); 
} Else {
Log.w (TAG, "No usage stats info for package:" + position); 
} 
return convertView; 
} 

void sortList (int sortOrder) {
if (mDisplayOrder == sortOrder) {
/ / Do nothing 
return; 
} 
mDisplayOrder = sortOrder; 
sortList (); 
} 
private void sortList () {
if (mDisplayOrder == _DISPLAY_ORDER_USAGE_TIME) {
if (localLOGV) Log.i (TAG, "Sorting by usage time"); 
Collections.sort (mUsageStats, mUsageTimeComparator); 
} Else if (mDisplayOrder == _DISPLAY_ORDER_LAUNCH_COUNT) {
if (localLOGV) Log.i (TAG, "Sorting launch count"); 
Collections.sort (mUsageStats, mLaunchCountComparator); 
} Else if (mDisplayOrder == _DISPLAY_ORDER_APP_NAME) {
if (localLOGV) Log.i (TAG, "Sorting by application name"); 
Collections.sort (mUsageStats, mAppLabelComparator); 
} 
notifyDataSetChanged (); 
} 
} 

/ ** Called when the activity is first created. * / 
protected void onCreate (Bundle icicle) {
super.onCreate (icicle); 
mUsageStatsService = IUsageStats.Stub.asInterface (ServiceManager.getService ("usagestats")); 
if (mUsageStatsService == null) {
Log.e (TAG, "Failed to retrieve usagestats service"); 
return; 
} 
mInflater = (LayoutInflater) getSystemService (Context.LAYOUT_INFLATER_SERVICE); 
mPm = getPackageManager (); 

setContentView (R.layout.usage_stats); 
mTypeSpinner = (Spinner) findViewById (R.id.typeSpinner); 
mTypeSpinner.setOnItemSelectedListener (this); 

mListView = (ListView) findViewById (R.id.pkg_list); 
/ / Initialize the inflater 

mAdapter = new UsageStatsAdapter (); 
mListView.setAdapter (mAdapter); 
} 

public void onItemSelected (AdapterView  parent, View view, int position, 
long id) {
mAdapter.sortList (position); 
} 

public void onNothingSelected (AdapterView  parent) {
/ / Do nothing 
} 
} 

Reply:
The actual system is to take the data file, the data file system management
Reply:
LZ problem is resolved
Brother is also encountered the same demand