java - 如何正确使用 queryUsageStats

Question

我正在尝试编写一个 android 应用程序，它会告诉我已安装应用程序的使用情况。目前我只使用当天。如何使用 queryUsageStats 获取应用程序的使用历史记录？还有其他方法吗？有人可以提供一个如何使用它的例子吗？提前致谢。

Answer 1

抱歉迟了回应。是的，我正在谈论https://developer.android.com/reference/android/app/usage/UsageStatsManager#queryUsageStats(int,%20long,%20long)。这是我的适配器，我在其中显示当天的使用情况（仅今天）。单击回收站视图对象后，我想显示每周/每月的使用情况（在此期间的每一天）。

公共类 AppListAdapter 扩展 RecyclerView.Adapter<AppListAdapter.ListViewHolder> { private ArrayList topAppsList; 私有上下文上下文；

AppListAdapter(ArrayList<HashMap> al) {
    this.topAppsList = al;
}

class ListViewHolder extends RecyclerView.ViewHolder {
    TextView appName, usageTime;
    ImageView appLogo;

    ListViewHolder(@NonNull View itemView) {
        super(itemView);
        appName = itemView.findViewById(R.id.appName);
        usageTime = itemView.findViewById(R.id.appUsageTime);
        appLogo = itemView.findViewById(R.id.appLogo);

    }
}

@NonNull
@Override
public ListViewHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int viewType) {
    View itemView;
    this.context = viewGroup.getContext();
    {
        itemView = LayoutInflater.from(this.context)
                .inflate(R.layout.usage_app_list_item, viewGroup, false);
    }

    return new ListViewHolder(itemView);
}

@Override
public void onBindViewHolder(@NonNull final ListViewHolder listViewHolder, int i) {
    HashMap<String, Long> hm = this.topAppsList.get(i);
    HashMap.Entry<String, Long> entry = hm.entrySet().iterator().next();
    final long usageTime = entry.getValue();
    final String packageName = entry.getKey();
    PackageManager pm = this.context.getPackageManager();
    ApplicationInfo applicationInfo;

    try {
        applicationInfo = pm.getApplicationInfo(packageName, 0);
    } catch (final PackageManager.NameNotFoundException e) {
        applicationInfo = null;
    }

    final String applicationName = (String) (applicationInfo != null ? pm.getApplicationLabel(applicationInfo) : packageName);
    final Drawable appIcon = applicationInfo != null ? pm.getApplicationIcon(applicationInfo) : null;
    if (appIcon != null && listViewHolder.appLogo != null) {
        listViewHolder.appLogo.setImageDrawable(appIcon);
    }

    if (listViewHolder.usageTime != null) {
        long hours = TimeUnit.MILLISECONDS.toHours(usageTime);
        long minutes = TimeUnit.MILLISECONDS.toMinutes(usageTime - TimeUnit.HOURS.toMillis(hours));
        if (hours != 0) {
            listViewHolder.usageTime.setText(String.format(Locale.getDefault(), "%dh %02dmin", (int) hours, (int) minutes));
        } else if (minutes != 0) {
            listViewHolder.usageTime.setText(String.format(Locale.getDefault(), "%dmin", (int) minutes));
        } else {
            listViewHolder.usageTime.setText(String.format(Locale.getDefault(), "Less than %dmin", 1));
        }
    }

    if (listViewHolder.usageTime != null) {
        listViewHolder.appName.setText(applicationName);
    }



    listViewHolder.itemView.setOnClickListener(new View.OnClickListener() {
      //  @SuppressLint("SetTextI18n")
        @Override
        public void onClick(View view) {
            Intent intent = new Intent(context, AppWeeklyUsageActivity.class);
            intent.putExtra("app_name",applicationName);
            long usageTimeHours = TimeUnit.MILLISECONDS.toHours(usageTime);
            long usageTimeMinutes = TimeUnit.MILLISECONDS.toMinutes(usageTime - TimeUnit.HOURS.toMillis(usageTimeHours));
            String usageTimeStringH = Long.toString(usageTimeHours);
            String usageTimeStringM = Long.toString(usageTimeMinutes);
       if (usageTimeHours < 1) {
            intent.putExtra("usageTimeM", usageTimeStringM);
        } else {
          intent.putExtra("usageTimeH", usageTimeStringH);
            intent.putExtra("usageTimeM", usageTimeStringM);
        }
            context.startActivity(intent);
        }
    });
}

@Override
public int getItemCount() {
    return topAppsList.size();
}

}