[Android]获取未安装的APK图标
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网上关于"获取未安装的APK图标"的文章满天飞,但都是转帖,运行后的效果却是获取到Android的默认小机器人图标.那个暴寒....
现提供解决方法如下,废话不说,上效果图,见代码:
本方法需要使用到Java反射的知识,具体请参考:
http://java.sun.com/developer/technicalArticles/ALT/Reflection/index.html
借鉴的Android源码出处:
XXoo这个链接好长ooXX
- package lab.sodino.fetchapkicon;
- import java.io.File;
- import java.lang.reflect.Constructor;
- import java.lang.reflect.Field;
- import java.lang.reflect.Method;
- import android.app.Activity;
- import android.content.Context;
- import android.content.pm.ApplicationInfo;
- import android.content.pm.PackageInfo;
- import android.content.pm.PackageManager;
- import android.content.res.Resources;
- import android.graphics.drawable.Drawable;
- import android.os.Bundle;
- import android.util.DisplayMetrics;
- import android.util.Log;
- import android.view.View;
- import android.widget.ImageView;
- /**
- * @author Sodino sodinoopen@hotmail.com
- * @since 2011年3月1日13时00分41秒
- * */
- public class FetchAPKIconAct extends Activity {
- public void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- setContentView(R.layout.main);
- showUninstallAPKIcon("/sdcard/APK/JarodYv.FishPool.apk");
- getUninatllApkInfo(this, "/sdcard/APK/JarodYv.FishPool.apk");
- }
- /** 网传的方法,但获取不成功 */
- public void getUninatllApkInfo(Context context, String archiveFilePath) {
- PackageManager pm = context.getPackageManager();
- PackageInfo info = pm.getPackageArchiveInfo(archiveFilePath, PackageManager.GET_ACTIVITIES);
- if (info != null) {
- ApplicationInfo appInfo = info.applicationInfo;
- Drawable icon = pm.getApplicationIcon(appInfo);
- ImageView image = (ImageView) findViewById(R.id.apkIconByTradition);
- image.setVisibility(View.VISIBLE);
- image.setImageDrawable(icon);
- }
- }
- //
- private void showUninstallAPKIcon(String apkPath) {
- String PATH_PackageParser = "android.content.pm.PackageParser";
- String PATH_AssetManager = "android.content.res.AssetManager";
- try {
- // apk包的文件路径
- // 这是一个Package 解释器, 是隐藏的
- // 构造函数的参数只有一个, apk文件的路径
- // PackageParser packageParser = new PackageParser(apkPath);
- Class pkgParserCls = Class.forName(PATH_PackageParser);
- Class[] typeArgs = new Class[1];
- typeArgs[0] = String.class;
- Constructor pkgParserCt = pkgParserCls.getConstructor(typeArgs);
- Object[] valueArgs = new Object[1];
- valueArgs[0] = apkPath;
- Object pkgParser = pkgParserCt.newInstance(valueArgs);
- Log.d("ANDROID_LAB", "pkgParser:" + pkgParser.toString());
- // 这个是与显示有关的, 里面涉及到一些像素显示等等, 我们使用默认的情况
- DisplayMetrics metrics = new DisplayMetrics();
- metrics.setToDefaults();
- // PackageParser.Package mPkgInfo = packageParser.parsePackage(new
- // File(apkPath), apkPath,
- // metrics, 0);
- typeArgs = new Class[4];
- typeArgs[0] = File.class;
- typeArgs[1] = String.class;
- typeArgs[2] = DisplayMetrics.class;
- typeArgs[3] = Integer.TYPE;
- Method pkgParser_parsePackageMtd = pkgParserCls.getDeclaredMethod("parsePackage",
- typeArgs);
- valueArgs = new Object[4];
- valueArgs[0] = new File(apkPath);
- valueArgs[1] = apkPath;
- valueArgs[2] = metrics;
- valueArgs[3] = 0;
- Object pkgParserPkg = pkgParser_parsePackageMtd.invoke(pkgParser, valueArgs);
- // 应用程序信息包, 这个公开的, 不过有些函数, 变量没公开
- // ApplicationInfo info = mPkgInfo.applicationInfo;
- Field appInfoFld = pkgParserPkg.getClass().getDeclaredField("applicationInfo");
- ApplicationInfo info = (ApplicationInfo) appInfoFld.get(pkgParserPkg);
- // uid 输出为"-1",原因是未安装,系统未分配其Uid。
- Log.d("ANDROID_LAB", "pkg:" + info.packageName + " uid=" + info.uid);
- // Resources pRes = getResources();
- // AssetManager assmgr = new AssetManager();
- // assmgr.addAssetPath(apkPath);
- // Resources res = new Resources(assmgr, pRes.getDisplayMetrics(),
- // pRes.getConfiguration());
- Class assetMagCls = Class.forName(PATH_AssetManager);
- Constructor assetMagCt = assetMagCls.getConstructor((Class[]) null);
- Object assetMag = assetMagCt.newInstance((Object[]) null);
- typeArgs = new Class[1];
- typeArgs[0] = String.class;
- Method assetMag_addAssetPathMtd = assetMagCls.getDeclaredMethod("addAssetPath",
- typeArgs);
- valueArgs = new Object[1];
- valueArgs[0] = apkPath;
- assetMag_addAssetPathMtd.invoke(assetMag, valueArgs);
- Resources res = getResources();
- typeArgs = new Class[3];
- typeArgs[0] = assetMag.getClass();
- typeArgs[1] = res.getDisplayMetrics().getClass();
- typeArgs[2] = res.getConfiguration().getClass();
- Constructor resCt = Resources.class.getConstructor(typeArgs);
- valueArgs = new Object[3];
- valueArgs[0] = assetMag;
- valueArgs[1] = res.getDisplayMetrics();
- valueArgs[2] = res.getConfiguration();
- res = (Resources) resCt.newInstance(valueArgs);
- CharSequence label = null;
- if (info.labelRes != 0) {
- label = res.getText(info.labelRes);
- }
- // if (label == null) {
- // label = (info.nonLocalizedLabel != null) ? info.nonLocalizedLabel
- // : info.packageName;
- // }
- Log.d("ANDROID_LAB", "label=" + label);
- // 这里就是读取一个apk程序的图标
- if (info.icon != 0) {
- Drawable icon = res.getDrawable(info.icon);
- ImageView image = (ImageView) findViewById(R.id.apkIconBySodino);
- image.setVisibility(View.VISIBLE);
- image.setImageDrawable(icon);
- }
- } catch (Exception e) {
- e.printStackTrace();
- }
- }
- }
本文内容归CSDN博客博主Sodino 所有
转载请注明出处: http://blog.csdn.net/sodino/archive/2011/03/01/6215224.aspx
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