/** * 获取apk包的信息：版本号，名称，图标等 * @param absPath apk包的绝对路径 * @param context  */  public void apkInfo(String absPath,Context context) {      PackageManager pm = context.getPackageManager();      PackageInfo pkgInfo = pm.getPackageArchiveInfo(absPath,PackageManager.GET_ACTIVITIES);      if (pkgInfo != null) {          ApplicationInfo appInfo = pkgInfo.applicationInfo;          /* 必须加这两句，不然下面icon获取是default icon而不是应用包的icon */          appInfo.sourceDir = absPath;          appInfo.publicSourceDir = absPath;          String appName = pm.getApplicationLabel(appInfo).toString();// 得到应用名          String packageName = appInfo.packageName; // 得到包名          String version = pkgInfo.versionName; // 得到版本信息          /* icon1和icon2其实是一样的 */          Drawable icon1 = pm.getApplicationIcon(appInfo);// 得到图标信息          Drawable icon2 = appInfo.loadIcon(pm);          String pkgInfoStr = String.format("PackageName:%s, Vesion: %s, AppName: %s", packageName, version, appName);          Log.i(TAG, String.format("PkgInfo: %s", pkgInfoStr));      }  }

public class TestActivity extends Activity {  @Override  public void onCreate(Bundle savedInstanceState) {   super.onCreate(savedInstanceState);   setContentView(R.layout.main);   String archiveFilePath="sdcard/jb51.net.apk";//安装包路径   PackageManager pm = getPackageManager();    PackageInfo info = pm.getPackageArchiveInfo(archiveFilePath, PackageManager.GET_ACTIVITIES);     if(info != null){      ApplicationInfo appInfo = info.applicationInfo;      String appName = pm.getApplicationLabel(appInfo).toString();      String packageName = appInfo.packageName; //得到安装包名称      String version=info.versionName; //得到版本信息      // Toast.makeText(TestActivity.this, , Toast.LENGTH_LONG).show();      Drawable icon = pm.getApplicationIcon(appInfo);//得到图标信息      TextView tv = (TextView)findViewById(R.id.tv);      tv.setText("appName:"+appName+"---packageName:"+packageName);      //显示图标      ImageView tu=(ImageView)findViewById(R.id.imageView1);      tu.setBackgroundDrawable(icon);     }    }   }  } }