如何以编程方式获取在Android上的应用程序所花费的时间

我想获得我今天使用的所有应用程序的使用时间.

我通过拨打*#*#4636#*#*来获取这些详细信息.
但我想在android中以编程方式获取这些细节.
请帮我解决这个问题.

我们可以看到这些Play商店应用程序如何显示使用统计信息

Break free

App Usage

解决方法:

具有使用权限设置的应用

活动类： –

package com.example.android.appusagestatistics;

import android.app.Activity;
import android.app.usage.UsageStats;
import android.app.usage.UsageStatsManager;
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 java.text.DateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
import java.util.Map;

import android.text.format.DateUtils;
import android.util.ArrayMap;
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 UsageStatsActivity extends Activity implements OnItemSelectedListener {
    private static final String TAG = "UsageStatsActivity";
    private static final boolean localLOGV = false;
    private UsageStatsManager mUsageStatsManager;
    private LayoutInflater mInflater;
    private UsageStatsAdapter mAdapter;
    private PackageManager mPm;

    public static class AppNameComparator implements Comparator<UsageStats> {
        private Map<String, String> mAppLabelList;

        AppNameComparator(Map<String, String> appList) {
            mAppLabelList = appList;
        }

        @Override
        public final int compare(UsageStats a, UsageStats b) {
            String alabel = mAppLabelList.get(a.getPackageName());
            String blabel = mAppLabelList.get(b.getPackageName());
            return alabel.compareTo(blabel);
        }
    }

    public static class LastTimeUsedComparator implements Comparator<UsageStats> {
        @Override
        public final int compare(UsageStats a, UsageStats b) {
            // return by descending order
            return (int)(b.getLastTimeUsed() - a.getLastTimeUsed());
        }
    }

    public static class UsageTimeComparator implements Comparator<UsageStats> {
        @Override
        public final int compare(UsageStats a, UsageStats b) {
            return (int)(b.getTotalTimeInForeground() - a.getTotalTimeInForeground());
        }
    }

    // View Holder used when displaying views
    static class AppViewHolder {
        TextView pkgName;
        TextView lastTimeUsed;
        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_LAST_TIME_USED = 1;
        private static final int _DISPLAY_ORDER_APP_NAME = 2;

        private int mDisplayOrder = _DISPLAY_ORDER_USAGE_TIME;
        private LastTimeUsedComparator mLastTimeUsedComparator = new LastTimeUsedComparator();
        private UsageTimeComparator mUsageTimeComparator = new UsageTimeComparator();
        private AppNameComparator mAppLabelComparator;
        private final ArrayMap<String, String> mAppLabelMap = new ArrayMap<>();
        private final ArrayList<UsageStats> mPackageStats = new ArrayList<>();

        UsageStatsAdapter() {
            Calendar cal = Calendar.getInstance();
            cal.add(Calendar.DAY_OF_YEAR, -5);

            final List<UsageStats> stats =
                    mUsageStatsManager.queryUsageStats(UsageStatsManager.INTERVAL_BEST,
                            cal.getTimeInMillis(), System.currentTimeMillis());
            if (stats == null) {
                return;
            }

            ArrayMap<String, UsageStats> map = new ArrayMap<>();
            final int statCount = stats.size();
            for (int i = 0; i < statCount; i  ) {
                final android.app.usage.UsageStats pkgStats = stats.get(i);

                // load application labels for each application
                try {
                    ApplicationInfo appInfo = mPm.getApplicationInfo(pkgStats.getPackageName(), 0);
                    String label = appInfo.loadLabel(mPm).toString();
                    mAppLabelMap.put(pkgStats.getPackageName(), label);

                    UsageStats existingStats =
                            map.get(pkgStats.getPackageName());
                    if (existingStats == null) {
                        map.put(pkgStats.getPackageName(), pkgStats);
                    } else {
                        existingStats.add(pkgStats);
                    }

                } catch (NameNotFoundException e) {
                    // This package may be gone.
                }
            }
            mPackageStats.addAll(map.values());

            // Sort list
            mAppLabelComparator = new AppNameComparator(mAppLabelMap);
            sortList();
        }

        @Override
        public int getCount() {
            return mPackageStats.size();
        }

        @Override
        public Object getItem(int position) {
            return mPackageStats.get(position);
        }

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

        @Override
        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.lastTimeUsed = (TextView) convertView.findViewById(R.id.last_time_used);
                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
            UsageStats pkgStats = mPackageStats.get(position);
            if (pkgStats != null) {
                String label = mAppLabelMap.get(pkgStats.getPackageName());
                holder.pkgName.setText(label);
                holder.lastTimeUsed.setText(DateUtils.formatSameDayTime(pkgStats.getLastTimeUsed(),
                        System.currentTimeMillis(), DateFormat.MEDIUM, DateFormat.MEDIUM));
                holder.usageTime.setText(
                        DateUtils.formatElapsedTime(pkgStats.getTotalTimeInForeground() / 1000));
            } 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(mPackageStats, mUsageTimeComparator);
            } else if (mDisplayOrder == _DISPLAY_ORDER_LAST_TIME_USED) {
                if (localLOGV) Log.i(TAG, "Sorting by last time used");
                Collections.sort(mPackageStats, mLastTimeUsedComparator);
            } else if (mDisplayOrder == _DISPLAY_ORDER_APP_NAME) {
                if (localLOGV) Log.i(TAG, "Sorting by application name");
                Collections.sort(mPackageStats, mAppLabelComparator);
            }
            notifyDataSetChanged();
        }
    }

    /** Called when the activity is first created. */
    @Override
    protected void onCreate(Bundle icicle) {
        super.onCreate(icicle);
        setContentView(R.layout.usage_stats);

        mUsageStatsManager = (UsageStatsManager) getSystemService(Context.USAGE_STATS_SERVICE);
        mInflater = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        mPm = getPackageManager();

        Spinner typeSpinner = (Spinner) findViewById(R.id.typeSpinner);
        typeSpinner.setOnItemSelectedListener(this);

        ListView listView = (ListView) findViewById(R.id.pkg_list);
        mAdapter = new UsageStatsAdapter();
        listView.setAdapter(mAdapter);
    }

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

    @Override
    public void onNothingSelected(AdapterView<?> parent) {
        // do nothing
    }
}

布局： –

1. usage_stats.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas./apk/res/android"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <TextView
        android:text="@string/display_order_text"
        android:textAppearance="?android:attr/textAppearanceLarge"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

    <Spinner
        android:id="@ id/typeSpinner"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:entries="@array/usage_stats_display_order_types" />

    <LinearLayout
        android:orientation="horizontal"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" >
        <TextView
            android:text="@string/app_name_label"
            android:textAppearance="?android:attr/textAppearanceMedium"
            android:layout_width="wrap_content"
            android:paddingEnd="6dip"
            android:layout_height="wrap_content" />
        <TextView
            android:text="@string/last_time_used_label"
            android:paddingEnd="6dip"
            android:textAppearance="?android:attr/textAppearanceMedium"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />
        <TextView
            android:text="@string/usage_time_label"
            android:textAppearance="?android:attr/textAppearanceMedium"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />
    </LinearLayout>
    <ListView android:id="@ id/pkg_list"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:drawSelectorOnTop="false" />
</LinearLayout> 

2. usage_stats_item.xml

<?xml version="1.0" encoding="utf-8"?><!--
/*
** Copyright 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./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.
*/
-->

<LinearLayout xmlns:android="http://schemas./apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:minHeight="?android:attr/listPreferredItemHeight"
    android:orientation="horizontal">

    <TextView
        android:id="@ id/package_name"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:maxLines="1"
        android:paddingEnd="6dip"
        android:paddingStart="12dip"
        android:textAppearance="?android:attr/textAppearanceMedium" />

    <TextView
        android:id="@ id/last_time_used"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:maxLines="1"
        android:paddingEnd="6dip"
        android:paddingStart="12dip"
        android:textAppearance="?android:attr/textAppearanceMedium" />

    <TextView
        android:id="@ id/usage_time"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:maxLines="1"
        android:paddingEnd="6dip"
        android:paddingStart="12dip"
        android:textAppearance="?android:attr/textAppearanceMedium" />
</LinearLayout>

价值观： –

arrays.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>


    <string-array name="usage_stats_display_order_types">
        <item>Usage time</item>
        <item>Last time used</item>
        <item>App name</item>
    </string-array>
</resources>

string.xml

 <string name="open_app_usage_setting">Open Apps with usage access settings</string>
<string name="last_time_used">"Last time used: "</string>
<string name="time_span">"Time span: "</string>

<string name="display_order_text">Sort by:</string>
<string name="app_name_label">App</string>
<string name="last_time_used_label">Last time used</string>
<!-- label for usage time -->
<string name="usage_time_label">Usage time</string> 

用户权限： –

<uses-permission android:name="android.permission.PACKAGE_USAGE_STATS"/>

来源：https://www./content-1-473101.html