简单实现Android获取已安装APP清单列表显示

àì夳堔傛蜴生んèń 2021-10-19 07:46 827阅读 0赞

activity代码：

import android.app.ListActivity;
    import android.content.pm.ApplicationInfo;
    import android.content.pm.PackageInfo;
    import android.content.pm.PackageManager;
    import android.graphics.drawable.Drawable;
    import android.os.Bundle;
    import android.widget.SimpleAdapter;
    
    import com.mob.at.demo.util.AppInfo;
    
    import java.util.ArrayList;
    import java.util.HashMap;
    import java.util.List;
    
    public class AppListActivity extends ListActivity {
    
        private SimpleAdapter listItemAdapter;
    
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
    
            setContentView(R.layout.activity_applist);
            initListView();
            this.setListAdapter(listItemAdapter);
        }
        
        private void initListView()   {
    
            PackageManager pm = getPackageManager();
            List<PackageInfo> installedPackages = pm.getInstalledPackages(0);  // 获取所以已安装的包
            ArrayList<HashMap<String, Object>> listItems = new ArrayList<HashMap<String, Object>>();
            ArrayList<AppInfo> list = new ArrayList<AppInfo>();
            for (PackageInfo packageInfo : installedPackages) {
                AppInfo info = new AppInfo();
                String packageName = packageInfo.packageName;  // 包名
                ApplicationInfo applicationInfo = packageInfo.applicationInfo;  // 应用信息
                String name = applicationInfo.loadLabel(pm).toString();  // 应用名称
                Drawable icon = applicationInfo.loadIcon(pm);  // 应用图标
                System.out.println("name=========="+name);
                System.out.println("packageName=========="+packageName);
                info.name = name;
                info.packageName = packageName;
                info.icon = icon;
                // 状态机,通过01状态来表示是否具备某些属性和功能
                int flags = applicationInfo.flags;  // 获取应用标记
                if ((flags & ApplicationInfo.FLAG_EXTERNAL_STORAGE) == ApplicationInfo
                        .FLAG_EXTERNAL_STORAGE) {
                    //安装在sdcard
                    info.isRom = false;
    
                } else {
                    //安装在手机
                    info.isRom = true;
                }
    
                if ((flags & ApplicationInfo.FLAG_SYSTEM) == ApplicationInfo
                        .FLAG_SYSTEM) {
                    //系统应用
                    info.isUser = false;
    
                } else {
                    //用户应用
                    info.isUser = true;
                }
    
                if (info.isUser) {
                    HashMap<String, Object> map = new HashMap<String, Object>();
                    map.put("ItemTitle", name);    //文字
                    map.put("ItemImage", icon);   //图片
                    listItems.add(map);
                }
    
            }
    
            System.out.println("listItems=========="+listItems.size());
    
            listItemAdapter = new SimpleAdapter(this, listItems,
                    R.layout.list_item,
                    new String[] {"ItemTitle", "ItemImage"},
                    new int[ ] {R.id.ItemTitle, R.id.ItemImage}
            );
        }
    
    }

list_item布局文件代码：

<?xml version="1.0" encoding="utf-8"?>
    <RelativeLayout android:id="@+id/LinearLayout01"
        android:layout_width="fill_parent"
        xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_height="wrap_content">
        <ImageView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:src="@mipmap/ic_launcher"
            android:layout_alignParentLeft="true"
            android:id="@+id/ItemImage" />
        <TextView
            android:layout_height="wrap_content"
            android:textSize="20dip"
            android:layout_width="wrap_content"
            android:layout_alignParentRight="true"
            android:text="123"
            android:id="@+id/ItemTitle" />
    
    </RelativeLayout>