android sdcard apk图标显示

package com.ddx.apk;

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 lin 766696311@.com

* */

public class ApkActivity extends Activity {

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

showUninstallAPKIcon("/sdcard/tt_app/nine.apk");

getUninatllApkInfo(this, "/sdcard/tt_app/nine.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();

}

}

}