java 如何获取其他应用程序的图标（Android）

How to get the icon of other applications (Android)

提问by Joe

What I'm doing is getting a list of all the current running processes on the phone. Which I have done by,

我正在做的是获取手机上所有当前正在运行的进程的列表。我所做的，

private List<RunningAppProcessInfo> process;
private ActivityManager activityMan;
...
activityMan = (ActivityManager)getSystemService(Context.ACTIVITY_SERVICE);
process = activityMan.getRunningAppProcesses();

this works fine. When I call the processName field like

这工作正常。当我调用 processName 字段时

process.get(i).processName;

I get a name like com.android.mail for example.

例如，我得到一个像 com.android.mail 这样的名字。

what I'm trying to do is use this to get access to that application so I can display its icon to the user, but I cant find anything that lets me do this. Is there something that can help me?

我想要做的是使用它来访问该应用程序，以便我可以向用户显示它的图标，但我找不到任何可以让我这样做的东西。有什么可以帮助我的吗？

I'm testing this app on my hero so the api level is 3 (android 1.5).

我正在我的英雄上测试这个应用程序，所以 api 级别是 3 (android 1.5)。

Thanks.

谢谢。

回答by Joe

Ok, I figured out how to do it. In case your curious this is what I did.

好的，我想出了怎么做。如果你好奇，这就是我所做的。

private PackageManager pk;
pk = getPackageManager();
....
pk.getApplicationIcon(process.get(i).processName)

Thanks.

谢谢。

回答by j2emanue

try this way make a class called packageinformation:

尝试这种方式创建一个名为 packageinformation 的类：

public class PackageInformation{

公共类包信息{

private Context mContext;

public  PackageInformation(Context context){
    mContext=context;   
}


class InfoObject {
public String appname = "";
public String pname = "";
public String versionName = "";
public int versionCode = 0;
public Drawable icon;


public void InfoObjectAggregatePrint() {//not used yet
    Log.v(appname,appname + "\t" + pname + "\t" + versionName + "\t" + versionCode);
}

} private ArrayList getPackages() { ArrayList apps = getInstalledApps(false); /* false = no system packages */ final int max = apps.size(); for (int i=0; i

} private ArrayList getPackages() { ArrayList apps = getInstalledApps(false); /* false = 没有系统包 */ final int max = apps.size(); 对于 (int i=0; i

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


 }

tuck this away somewhere and now to access the info from your working class do this:

把它藏在某个地方，现在从你的工人阶级那里访问信息，这样做：

  PackageInformation androidPackagesInfo=new PackageInformation(this);      
    ArrayList<InfoObject> appsData=androidPackagesInfo.getInstalledApps(true);


for (InfoObject info : appsData) {


            Toast.makeText(MainActivity.this, info.appname,2).show();
                Drawable somedrawable=info.icon;

}

}

回答by Andrei Buneyeu

Since Android 3.0 you might want to get a bigger launcher icon that you can't get the way you described. If so, perhaps my answer to question below can help you: Getting App Icon in Android

从 Android 3.0 开始，您可能希望获得更大的启动器图标，而您无法按照您的描述方式获得。如果是这样，也许我对以下问题的回答可以帮助您：在 Android 中获取应用程序图标

回答by Vinay

While packagemanager.getApplicationIcon(pkagename) works for some apps but not for all.

虽然 packagemanager.getApplicationIcon(pkagename) 适用于某些应用程序，但不适用于所有应用程序。

Found better answer here: how to get running applications icon on android programmatically

在这里找到更好的答案： how to get running applications icon on android programmatically

Uses:

用途：

Drawable ico=getApplicationInfo(packagemanager,PackageManager.GET_META_DATA).loadIcon(getPackageManager());