获取未安装的APK图标

001

package

lab.sodino.fetchapkicon;

002

003

import

java.io.File;

004

import

java.lang.reflect.Constructor;

005

import

java.lang.reflect.Field;

006

import

java.lang.reflect.Method;

007

import

android.app.Activity;

008

import

android.content.Context;

009

import

android.content.pm.ApplicationInfo;

010

import

android.content.pm.PackageInfo;

011

import

android.content.pm.PackageManager;

012

import

android.content.res.Resources;

013

import

android.graphics.drawable.Drawable;

014

import

android.os.Bundle;

015

import

android.util.DisplayMetrics;

016

import

android.util.Log;

017

import

android.view.View;

018

import

android.widget.ImageView;

019

020

public

class

FetchAPKIconAct

extends

Activity{

021

public

void

onCreate(BundlesavedInstanceState){

022

super

.onCreate(savedInstanceState);

023

setContentView(R.layout.main);

024

showUninstallAPKIcon(

"/sdcard/APK/JarodYv.FishPool.apk"

);

025

getUninatllApkInfo(

this

,

"/sdcard/APK/JarodYv.FishPool.apk"

);

026

}

027

028

public

void

getUninatllApkInfo(Contextcontext,StringarchiveFilePath){

029

PackageManagerpm=context.getPackageManager();

030

PackageInfoinfo=pm.getPackageArchiveInfo(archiveFilePath,PackageManager.GET_ACTIVITIES);

031

if

(info!=

null

){

032

ApplicationInfoappInfo=info.applicationInfo;

033

Drawableicon=pm.getApplicationIcon(appInfo);

034

ImageViewimage=(ImageView)findViewById(R.id.apkIconByTradition);

035

image.setVisibility(View.VISIBLE);

036

image.setImageDrawable(icon);

037

}

038

}

039

//

040

private

void

showUninstallAPKIcon(StringapkPath){

041

StringPATH_PackageParser=

"android.content.pm.PackageParser"

;

042

StringPATH_AssetManager=

"android.content.res.AssetManager"

;

043

try

{

044

//apk包的文件路径

045

//这是一个Package解释器,是隐藏的

046

//构造函数的参数只有一个,apk文件的路径

047

//PackageParserpackageParser=newPackageParser(apkPath);

048

ClasspkgParserCls=Class.forName(PATH_PackageParser);

049

Class[]typeArgs=

new

Class[

1

];

050

typeArgs[

0

]=String.

class

;

051

ConstructorpkgParserCt=pkgParserCls.getConstructor(typeArgs);

052

Object[]valueArgs=

new

Object[

1

];

053

valueArgs[

0

]=apkPath;

054

ObjectpkgParser=pkgParserCt.newInstance(valueArgs);

055

Log.d(

"ANDROID_LAB"

,

"pkgParser:"

+pkgParser.toString());

056

//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

057

DisplayMetricsmetrics=

new

DisplayMetrics();

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metrics.setToDefaults();

059

//PackageParser.PackagemPkgInfo=packageParser.parsePackage(new

060

//File(apkPath),apkPath,

061

//metrics,0);

062

typeArgs=

new

Class[

4

];

063

typeArgs[

0

]=File.

class

;

064

typeArgs[

1

]=String.

class

;

065

typeArgs[

2

]=DisplayMetrics.

class

;

066

typeArgs[

3

]=Integer.TYPE;

067

MethodpkgParser_parsePackageMtd=pkgParserCls.getDeclaredMethod(

"parsePackage"

,

068

typeArgs);

069

valueArgs=

new

Object[

4

];

070

valueArgs[

0

]=

new

File(apkPath);

071

valueArgs[

1

]=apkPath;

072

valueArgs[

2

]=metrics;

073

valueArgs[

3

]=

0

;

074

ObjectpkgParserPkg=pkgParser_parsePackageMtd.invoke(pkgParser,valueArgs);

075

//应用程序信息包,这个公开的,不过有些函数,变量没公开

076

//ApplicationInfoinfo=mPkgInfo.applicationInfo;

077

FieldappInfoFld=pkgParserPkg.getClass().getDeclaredField(

"applicationInfo"

);

078

ApplicationInfoinfo=(ApplicationInfo)appInfoFld.get(pkgParserPkg);

079

//uid输出为"-1"，原因是未安装，系统未分配其Uid。

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Log.d(

"ANDROID_LAB"

,

"pkg:"

+info.packageName+

"uid="

+info.uid);

081

//ResourcespRes=getResources();

082

//AssetManagerassmgr=newAssetManager();

083

//assmgr.addAssetPath(apkPath);

084

//Resourcesres=newResources(assmgr,pRes.getDisplayMetrics(),

085

//pRes.getConfiguration());

086

ClassassetMagCls=Class.forName(PATH_AssetManager);

087

ConstructorassetMagCt=assetMagCls.getConstructor((Class[])

null

);

088

ObjectassetMag=assetMagCt.newInstance((Object[])

null

);

089

typeArgs=

new

Class[

1

];

090

typeArgs[

0

]=String.

class

;

091

MethodassetMag_addAssetPathMtd=assetMagCls.getDeclaredMethod(

"addAssetPath"

,

092

typeArgs);

093

valueArgs=

new

Object[

1

];

094

valueArgs[

0

]=apkPath;

095

assetMag_addAssetPathMtd.invoke(assetMag,valueArgs);

096

Resourcesres=getResources();

097

typeArgs=

new

Class[

3

];

098

typeArgs[

0

]=assetMag.getClass();

099

typeArgs[

1

]=res.getDisplayMetrics().getClass();

100

typeArgs[

2

]=res.getConfiguration().getClass();

101

ConstructorresCt=Resources.

class

.getConstructor(typeArgs);

102

valueArgs=

new

Object[

3

];

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valueArgs[

0

]=assetMag;

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valueArgs[

1

]=res.getDisplayMetrics();

105

valueArgs[

2

]=res.getConfiguration();

106

res=(Resources)resCt.newInstance(valueArgs);

107

CharSequencelabel=

null

;

108

if

(info.labelRes!=

0

){

109

label=res.getText(info.labelRes);

110

}

111

//if(label==null){

112

//label=(info.nonLocalizedLabel!=null)?info.nonLocalizedLabel

113

//:info.packageName;

114

//}

115

Log.d(

"ANDROID_LAB"

,

"label="

+label);

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//这里就是读取一个apk程序的图标

117

if

(info.icon!=

0

){

118

Drawableicon=res.getDrawable(info.icon);

119

ImageViewimage=(ImageView)findViewById(R.id.apkIconBySodino);

120

image.setVisibility(View.VISIBLE);

121

image.setImageDrawable(icon);

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}

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}

catch

(Exceptione){

124

e.printStackTrace();

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}

126

}

127

}