Android - 如何获取应用程序的图标？

Question

我正在尝试以这种方式显示任务列表 -

图标 |应用名称 |复选框

因为我发现没有 listview 适配器支持这一点，所以我决定开发一个自定义适配器，但我无法获取应用程序的图标。到目前为止，我尝试过这个：-

public View getView(int position, View convertView, ViewGroup parent)
{
    View v = convertView;
    View row = inflater.inflate(R.layout.item, parent, false);
    CheckedTextView ctb = (CheckedTextView)row.findViewById(R.id.checkText);
    String pkgName = "com.abc.abc";

    ctb.setText("bla bla");
    ImageView iv = (ImageView)row.findViewById(R.id.image);
    List<PackageInfo> pkgs = activity.getPackageManager().getInstalledPackages(0);
    for(PackageInfo p : pkgs)
    {
       if(p.packageName.equals(pkgName))
       {
          Drawable d =  p.applicationInfo.loadIcon(pm);
           iv.setImageDrawable(d);
       }
    }

     return row;
}
}

我确信我在这段代码中尝试了一些愚蠢的事情。请尝试抓住我做错的任何事情。

谢谢。

Answer 1

您可以通过以下方式获取应用（包）的图标：

String pkg = "com.app.my";
Drawable icon = getContext().getPackageManager().getApplicationIcon(pkg);

Answer 2

请查看我的获取应用程序图标列表的解决方案

在此获取所有应用程序的ResolveInfo 列表。

resolveInfo 类包含从针对 IntentFilter 解析意图返回的信息。这部分对应于从 AndroidManifest.xml 的标签中收集的信息

这是在android中获取应用程序图标列表的方法，希望这个例子对你有所帮助

    import java.util.List;


import android.app.ListActivity;
import android.content.Context;
import android.content.Intent;
import android.content.pm.ResolveInfo;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;

import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;

public class IconListActivity extends ListActivity {



    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        loadApps();  

    }



    private void loadApps() {
        Intent mainIntent = new Intent(Intent.ACTION_MAIN, null);
        mainIntent.addCategory(Intent.CATEGORY_LAUNCHER);

        List<ResolveInfo> mApps = getPackageManager().queryIntentActivities(mainIntent, 0);

        ListView listView = getListView();
        listView.setAdapter(new AppsAdapter(this,mApps));
     }

    public class AppsAdapter extends BaseAdapter {
        private LayoutInflater inflater;
        private List<ResolveInfo> mApps;

        public AppsAdapter(Context context, List<ResolveInfo> mApps) {
            this.inflater = LayoutInflater.from(context);
            this.mApps = mApps;
        }

        public View getView(int position, View convertView, ViewGroup parent) {

            ViewHendler hendler;
            if (convertView == null) {
                convertView = inflater.inflate(R.layout.row_view, null);
                hendler = new ViewHendler();
                hendler.textLable = (TextView)convertView.findViewById(R.id.textViewLable);
                hendler.iconImage = (ImageView)convertView.findViewById(R.id.imageViewIcon);
                convertView.setTag(hendler);
            } else {
                hendler = (ViewHendler)convertView.getTag();
            }
            ResolveInfo info = this.mApps.get(position);
            hendler.iconImage.setImageDrawable(info.loadIcon(getPackageManager()));
            hendler.textLable.setText(info.loadLabel(getPackageManager()));

            return convertView;

        }
        class ViewHendler{
            TextView textLable;
            ImageView iconImage;
        }


        public final int getCount() {
            return mApps.size();
        }

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

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

}