Question

我正在创建一个Android应用程序来获取所有应用程序的列表，它们的内存详细信息和用于应用程序的RAM。我用过这个链接

Get installed Applications with Name, Package Name, Version and Icon

现在我想了解android应用程序的内存细节。我试试这段代码

MemoryInfo mi = new MemoryInfo();
ActivityManager activityManager = (ActivityManager) getSystemService(ACTIVITY_SERVICE);
activityManager.getMemoryInfo(mi);
long availableMegs = mi.availMem / 1048576L;

我收到的信息包括应用徽标，应用名称，版本，更新时间，套餐名称，功能，权限等。

但我想获得每个应用的内存使用，大小等（硬件信息）。

我经常搜索并从ActivityManager获得答案public int getMemoryClass ()，但它为所有应用程序提供64mb

Answer 1

试试这个： -

ActivityManager activityManager = (ActivityManager) context.getSystemService(ACTIVITY_SERVICE);
MemoryInfo memoryInfo = new ActivityManager.MemoryInfo();
activityManager.getMemoryInfo(memoryInfo);

Log.i(TAG, " memoryInfo.availMem " + memoryInfo.availMem + "\n" );
Log.i(TAG, " memoryInfo.lowMemory " + memoryInfo.lowMemory + "\n" );
Log.i(TAG, " memoryInfo.threshold " + memoryInfo.threshold + "\n" );

List<RunningAppProcessInfo> runningAppProcesses = activityManager.getRunningAppProcesses();

Map<Integer, String> pidMap = new TreeMap<Integer, String>();
for (RunningAppProcessInfo runningAppProcessInfo : runningAppProcesses)
{
    pidMap.put(runningAppProcessInfo.pid, runningAppProcessInfo.processName);
}

Collection<Integer> keys = pidMap.keySet();

for(int key : keys)
{
    int pids[] = new int[1];
    pids[0] = key;
    android.os.Debug.MemoryInfo[] memoryInfoArray = activityManager.getProcessMemoryInfo(pids);
    for(android.os.Debug.MemoryInfo pidMemoryInfo: memoryInfoArray)
    {
        Log.i(TAG, String.format("** MEMINFO in pid %d [%s] **\n",pids[0],pidMap.get(pids[0])));
        Log.i(TAG, " pidMemoryInfo.getTotalPrivateDirty(): " + pidMemoryInfo.getTotalPrivateDirty() + "\n");
        Log.i(TAG, " pidMemoryInfo.getTotalPss(): " + pidMemoryInfo.getTotalPss() + "\n");
        Log.i(TAG, " pidMemoryInfo.getTotalSharedDirty(): " + pidMemoryInfo.getTotalSharedDirty() + "\n");
    }
}

Answer 2

使用代码来获取有关设备上安装的应用程序的信息以及应用程序大小。我已经为它做了一个祝酒词。实施可能是一个要求

import android.content.pm.PackageInfo;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.util.Log;
import android.widget.Toast;

import java.io.File;
import java.util.ArrayList;
import java.util.List;


public class MainActivity extends ActionBarActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    getPackages();
}

private ArrayList<PInfo> getPackages() {
    ArrayList<PInfo> apps = getInstalledApps(false); /* false = no system packages */
    final int max = apps.size();
    for (int i=0; i<max; i++) {
        apps.get(i).prettyPrint();
    }
    return apps;
}

private ArrayList<PInfo> getInstalledApps(boolean getSysPackages) {
    ArrayList<PInfo> res = new ArrayList<PInfo>();
    List<PackageInfo> packs = getPackageManager().getInstalledPackages(0);
    for(int i=0;i<packs.size();i++) {
        PackageInfo p = packs.get(i);
        if ((!getSysPackages) && (p.versionName == null)) {
            continue ;
        }
        PInfo newInfo = new PInfo();
        newInfo.appname = p.applicationInfo.loadLabel(getPackageManager()).toString();
        newInfo.pname = p.packageName;
        newInfo.versionName = p.versionName;
        newInfo.versionCode = p.versionCode;
        newInfo.path = p.applicationInfo.sourceDir;
        newInfo.icon = p.applicationInfo.loadIcon(getPackageManager());

        File file = new File(newInfo.path);
        long sizeinByte = file.length();
        long sizeinMb = sizeinByte / (1024*1024);

        Toast.makeText(this,newInfo.appname + "\t"/*"\t" + newInfo.pname + "\t" + newInfo.versionName + "\t" + newInfo.versionCode + "\t" */+sizeinMb+"Mb",Toast.LENGTH_SHORT).show();


        res.add(newInfo);
    }
    return res;
}
private class PInfo {
    private String appname = "";
    private String pname = "";
    private String versionName = "";
    private int versionCode = 0;
    private String path = "";
    private Drawable icon;

    private void prettyPrint() {
        Log.i("Here",appname + "\t" + pname + "\t" + versionName + "\t" + versionCode + "\t" + path );
    }
}

}

获取已安装的Android应用程序的内存和RAM详细信息

2 个答案: