android 获取另一个apk的信息
16lz
2021-12-04
/**
* @return all local plaugins
*/
private List<PlauginInfo> findLocalPlugins(){
PackageManager pm=getPackageManager();
//List<PackageInfo> pkgs=pm.getInstalledPackages(PackageManager.GET_UNINSTALLED_PACKAGES);
Intent mainIntent = new Intent("com.android.uxun", null);
List<ResolveInfo> allApps=getPackageManager().queryIntentActivities(mainIntent, 0);
Log.i(TAG, "======allApps.size()==="+allApps.size());
sLoaclPlugins.clear();
for(ResolveInfo resolveInfo:allApps){
String packageName=resolveInfo.activityInfo.packageName;
ApplicationInfo applicationInfo=resolveInfo.activityInfo.applicationInfo;
String label=pm.getApplicationLabel(applicationInfo).toString();
PlauginInfo plug=new PlauginInfo();
Context context=null;
try {
context = createPackageContext(packageName,Context.CONTEXT_IGNORE_SECURITY);
if(context!=null){
plug.classId=context.getSharedPreferences("plaugin",MODE_WORLD_READABLE+MODE_WORLD_WRITEABLE).getInt("plauginId",0);
}
} catch (NameNotFoundException e) {
e.printStackTrace();
}
plug.description="";
Drawable drawable=pm.getApplicationIcon(applicationInfo);
if(drawable!=null){
plug.icon=((BitmapDrawable)drawable).getBitmap();
}
plug.intent=new Intent(packageName);
plug.itemType=0;
plug.openCount=0;
plug.postFlag=0;
plug.title=label;
int versionCode=0;
try {
versionCode = pm.getPackageInfo(packageName,0).versionCode;
} catch (NameNotFoundException e) {
e.printStackTrace();
}
plug.versionId=versionCode;
sLoaclPlugins.add(plug);
}
/*for(PackageInfo pkg:pkgs){
if("android.uxun".equals(pkg.sharedUserId)){
String packageName=pkg.packageName;
//String prcessName=pkg.applicationInfo.processName;
String label=pm.getApplicationLabel(pkg.applicationInfo).toString();
PlauginInfo plug=new PlauginInfo();
Context context=null;
try {
context = createPackageContext(packageName,Context.CONTEXT_IGNORE_SECURITY);
if(context!=null){
plug.classId=context.getSharedPreferences("plaugin",MODE_WORLD_READABLE+MODE_WORLD_WRITEABLE).getInt("plauginId",0);
}
} catch (NameNotFoundException e) {
e.printStackTrace();
}
plug.description="";
Drawable drawable=pm.getApplicationIcon(pkg.applicationInfo);
if(drawable!=null){
plug.icon=((BitmapDrawable)drawable).getBitmap();
}
plug.intent=new Intent(packageName);
plug.itemType=0;
plug.openCount=0;
plug.postFlag=0;
plug.title=label;
plug.versionId=pkg.versionCode;
sLoaclPlugins.add(plug);
}
}*/
return sLoaclPlugins;
} 前提条件是需要系统编译生成的class.jar文件 ** *Utilitymethodtogetdefaulticonforagivenpackage *@paramarchiveFilePaththeabsolutepathofthepackage *@returntheDrawableobjectofthepackage */ public DrawablegetIconFromPackage(StringarchiveFilePath){ PackageParserpackageParser= new PackageParser(archiveFilePath); FilesourceFile= new File(archiveFilePath); DisplayMetricsmetrics= new DisplayMetrics(); metrics.setToDefaults(); PackageParser.Packagepkg=packageParser.parsePackage(sourceFile, archiveFilePath,metrics, 0 ); if (pkg== null ) return mContext.getResources().getDrawable(R.drawable.android); ApplicationInfoinfo=pkg.applicationInfo; ResourcespRes=mContext.getResources(); AssetManagerassmgr= new AssetManager(); assmgr.addAssetPath(archiveFilePath); Resourcesres= new Resources(assmgr,pRes.getDisplayMetrics(), pRes.getConfiguration()); //readthedeafulticonofthepackage if (info.icon!= 0 ){ Drawableicon=res.getDrawable(info.icon); return icon; } else { return mContext.getResources().getDrawable(R.drawable.android); } } 一个apk读取另一个apk资源(前提条件是两个apk为同一个进程 主程序及要 读取的apk中AndroidManifest.xml中配置 例如:android:sharedUserId="com.android.main.chajian" //主apk的包名 ) <?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android=" http://schemas.android.com/apk/res/android"
package="com.android.main.chajian"
android:versionCode="1"
android:versionName="1.0"
android:sharedUserId="com.android.main.chajian"
> <uses-sdk android:minSdkVersion="8" /> <application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name" >
<activity
android:name=".MainchajianActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application> </manifest> package com.android.main.chajian; import android.app.Activity;
import android.content.Context;
import android.content.pm.PackageManager.NameNotFoundException;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.TextView; public class MainchajianActivity extends Activity {
/** Called when the activity is first created. */
private TextView mTextView;
private Context mSecondContext;
private void init(){
mTextView=(TextView)findViewById(R.id.tv);
try {
mSecondContext=this.createPackageContext("com.android.second.chajian",Context.CONTEXT_IGNORE_SECURITY);
} catch (NameNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
mTextView.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Drawable draw=mSecondContext.getResources().getDrawable(R.drawable.unknown_source);
mTextView.setBackgroundDrawable(draw);
}
});
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
init();
}
} 次apk================================ <?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android=" http://schemas.android.com/apk/res/android"
package="com.android.second.chajian"
android:versionCode="1"
android:versionName="1.0"
android:sharedUserId="com.android.main.chajian"
> <uses-sdk android:minSdkVersion="8" /> <application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name" >
<activity
android:name=".MainSecondChajianActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application> </manifest> 2。次apk的配置文件android:sharedUserId="com.android.main.chajian"//主apk的包名 3。com.android.main.chajian在主apk和次apk中都要有定义,而且是路径要相同 package com.android.second.chajian; import android.app.Activity;
import android.os.Bundle; public class MainSecondChajianActivity extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
}
} =========================================================================== /** * 获取未安装的apk信息 * * @param ctx * @param apkPath * @return */ public static AppInfoData getApkFileInfo(Context ctx, String apkPath) { System.out.println(apkPath); File apkFile = new File(apkPath); if (!apkFile.exists() || !apkPath.toLowerCase().endsWith(".apk")) { System.out.println("文件路径不正确"); return null; } AppInfoData appInfoData; String PATH_PackageParser = "android.content.pm.PackageParser"; String PATH_AssetManager = "android.content.res.AssetManager"; try { //反射得到pkgParserCls对象并实例化,有参数 Class<?> pkgParserCls = Class.forName(PATH_PackageParser); Class<?>[] typeArgs = {String.class}; Constructor<?> pkgParserCt = pkgParserCls.getConstructor(typeArgs); Object[] valueArgs = {apkPath}; Object pkgParser = pkgParserCt.newInstance(valueArgs); //从pkgParserCls类得到parsePackage方法 DisplayMetrics metrics = new DisplayMetrics(); metrics.setToDefaults();//这个是与显示有关的, 这边使用默认 typeArgs = new Class<?>[]{File.class,String.class, DisplayMetrics.class,int.class}; Method pkgParser_parsePackageMtd = pkgParserCls.getDeclaredMethod( "parsePackage", typeArgs); valueArgs=new Object[]{new File(apkPath),apkPath,metrics,0}; //执行pkgParser_parsePackageMtd方法并返回 Object pkgParserPkg = pkgParser_parsePackageMtd.invoke(pkgParser, valueArgs); //从返回的对象得到名为"applicationInfo"的字段对象 if (pkgParserPkg==null) { return null; } Field appInfoFld = pkgParserPkg.getClass().getDeclaredField( "applicationInfo"); //从对象"pkgParserPkg"得到字段"appInfoFld"的值 if (appInfoFld.get(pkgParserPkg)==null) { return null; } ApplicationInfo info = (ApplicationInfo) appInfoFld .get(pkgParserPkg); //反射得到assetMagCls对象并实例化,无参 Class<?> assetMagCls = Class.forName(PATH_AssetManager); Object assetMag = assetMagCls.newInstance(); //从assetMagCls类得到addAssetPath方法 typeArgs = new Class[1]; typeArgs[0] = String.class; Method assetMag_addAssetPathMtd = assetMagCls.getDeclaredMethod( "addAssetPath", typeArgs); valueArgs = new Object[1]; valueArgs[0] = apkPath; //执行assetMag_addAssetPathMtd方法 assetMag_addAssetPathMtd.invoke(assetMag, valueArgs); //得到Resources对象并实例化,有参数 Resources res = ctx.getResources(); typeArgs = new Class[3]; typeArgs[0] = assetMag.getClass(); typeArgs[1] = res.getDisplayMetrics().getClass(); typeArgs[2] = res.getConfiguration().getClass(); Constructor<Resources> 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); //读取apk文件的信息 appInfoData = new AppInfoData(); if (info!=null) { if (info.icon != 0) {/ / 图片存在,则读取相关信息 Drawable icon = res.getDrawable(info.icon);// 图标 appInfoData.setAppicon(icon); } if (info.labelRes != 0) { String neme = (String) res.getText(info.labelRes);// 名字 appInfoData.setAppname(neme); }else { String apkName=apkFile.getName(); appInfoData.setAppname(apkName.substring(0,apkName.lastIndexOf("."))); } String pkgName = info.packageName;// 包名 appInfoData.setApppackage(pkgName ); }else { return null; } PackageManager pm = ctx.getPackageManager(); PackageInfo packageInfo = pm.getPackageArchiveInfo(apkPath, PackageManager.GET_ACTIVITIES); if (packageInfo != null) { appInfoData.setAppversion(packageInfo.versionName);//版本号 appInfoData.setAppversionCode(packageInfo.versionCode+"");//版本码 } return appInfoData; } catch (Exception e) { e.printStackTrace(); } return null; } 方法一:最直接的就是知道apk的包名和启动类名, 直接启动 [java] view plain copy
方法二:如果只知道包名,在这种情况下通常也可以启动,通常调用 publicabstract Intent getLaunchIntentForPackage(String packageName) 大概意思就是返回一个程序入口的Intent,就是Java程序的Main方法。直接startActivity(返回的intent)即可。
Intent mIntent = getPackageManager() getLaunchIntentForPackage(packageName); if( mIntent != null ) startActivity(mIntent);
方法三:就是如何只提供apk,如何启动呢?在这种情况下,通常只能在sdk源代码下来编译完成
通常引入android.content.pm.PackageParser;
见code:
[java] view plain copy
这样就可以得到该apk的包名,接下来方式就和方法二一样则可
* @return all local plaugins
*/
private List<PlauginInfo> findLocalPlugins(){
PackageManager pm=getPackageManager();
//List<PackageInfo> pkgs=pm.getInstalledPackages(PackageManager.GET_UNINSTALLED_PACKAGES);
Intent mainIntent = new Intent("com.android.uxun", null);
List<ResolveInfo> allApps=getPackageManager().queryIntentActivities(mainIntent, 0);
Log.i(TAG, "======allApps.size()==="+allApps.size());
sLoaclPlugins.clear();
for(ResolveInfo resolveInfo:allApps){
String packageName=resolveInfo.activityInfo.packageName;
ApplicationInfo applicationInfo=resolveInfo.activityInfo.applicationInfo;
String label=pm.getApplicationLabel(applicationInfo).toString();
PlauginInfo plug=new PlauginInfo();
Context context=null;
try {
context = createPackageContext(packageName,Context.CONTEXT_IGNORE_SECURITY);
if(context!=null){
plug.classId=context.getSharedPreferences("plaugin",MODE_WORLD_READABLE+MODE_WORLD_WRITEABLE).getInt("plauginId",0);
}
} catch (NameNotFoundException e) {
e.printStackTrace();
}
plug.description="";
Drawable drawable=pm.getApplicationIcon(applicationInfo);
if(drawable!=null){
plug.icon=((BitmapDrawable)drawable).getBitmap();
}
plug.intent=new Intent(packageName);
plug.itemType=0;
plug.openCount=0;
plug.postFlag=0;
plug.title=label;
int versionCode=0;
try {
versionCode = pm.getPackageInfo(packageName,0).versionCode;
} catch (NameNotFoundException e) {
e.printStackTrace();
}
plug.versionId=versionCode;
sLoaclPlugins.add(plug);
}
/*for(PackageInfo pkg:pkgs){
if("android.uxun".equals(pkg.sharedUserId)){
String packageName=pkg.packageName;
//String prcessName=pkg.applicationInfo.processName;
String label=pm.getApplicationLabel(pkg.applicationInfo).toString();
PlauginInfo plug=new PlauginInfo();
Context context=null;
try {
context = createPackageContext(packageName,Context.CONTEXT_IGNORE_SECURITY);
if(context!=null){
plug.classId=context.getSharedPreferences("plaugin",MODE_WORLD_READABLE+MODE_WORLD_WRITEABLE).getInt("plauginId",0);
}
} catch (NameNotFoundException e) {
e.printStackTrace();
}
plug.description="";
Drawable drawable=pm.getApplicationIcon(pkg.applicationInfo);
if(drawable!=null){
plug.icon=((BitmapDrawable)drawable).getBitmap();
}
plug.intent=new Intent(packageName);
plug.itemType=0;
plug.openCount=0;
plug.postFlag=0;
plug.title=label;
plug.versionId=pkg.versionCode;
sLoaclPlugins.add(plug);
}
}*/
return sLoaclPlugins;
} 前提条件是需要系统编译生成的class.jar文件 ** *Utilitymethodtogetdefaulticonforagivenpackage *@paramarchiveFilePaththeabsolutepathofthepackage *@returntheDrawableobjectofthepackage */ public DrawablegetIconFromPackage(StringarchiveFilePath){ PackageParserpackageParser= new PackageParser(archiveFilePath); FilesourceFile= new File(archiveFilePath); DisplayMetricsmetrics= new DisplayMetrics(); metrics.setToDefaults(); PackageParser.Packagepkg=packageParser.parsePackage(sourceFile, archiveFilePath,metrics, 0 ); if (pkg== null ) return mContext.getResources().getDrawable(R.drawable.android); ApplicationInfoinfo=pkg.applicationInfo; ResourcespRes=mContext.getResources(); AssetManagerassmgr= new AssetManager(); assmgr.addAssetPath(archiveFilePath); Resourcesres= new Resources(assmgr,pRes.getDisplayMetrics(), pRes.getConfiguration()); //readthedeafulticonofthepackage if (info.icon!= 0 ){ Drawableicon=res.getDrawable(info.icon); return icon; } else { return mContext.getResources().getDrawable(R.drawable.android); } } 一个apk读取另一个apk资源(前提条件是两个apk为同一个进程 主程序及要 读取的apk中AndroidManifest.xml中配置 例如:android:sharedUserId="com.android.main.chajian" //主apk的包名 ) <?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android=" http://schemas.android.com/apk/res/android"
package="com.android.main.chajian"
android:versionCode="1"
android:versionName="1.0"
android:sharedUserId="com.android.main.chajian"
> <uses-sdk android:minSdkVersion="8" /> <application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name" >
<activity
android:name=".MainchajianActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application> </manifest> package com.android.main.chajian; import android.app.Activity;
import android.content.Context;
import android.content.pm.PackageManager.NameNotFoundException;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.TextView; public class MainchajianActivity extends Activity {
/** Called when the activity is first created. */
private TextView mTextView;
private Context mSecondContext;
private void init(){
mTextView=(TextView)findViewById(R.id.tv);
try {
mSecondContext=this.createPackageContext("com.android.second.chajian",Context.CONTEXT_IGNORE_SECURITY);
} catch (NameNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
mTextView.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Drawable draw=mSecondContext.getResources().getDrawable(R.drawable.unknown_source);
mTextView.setBackgroundDrawable(draw);
}
});
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
init();
}
} 次apk================================ <?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android=" http://schemas.android.com/apk/res/android"
package="com.android.second.chajian"
android:versionCode="1"
android:versionName="1.0"
android:sharedUserId="com.android.main.chajian"
> <uses-sdk android:minSdkVersion="8" /> <application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name" >
<activity
android:name=".MainSecondChajianActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application> </manifest> 2。次apk的配置文件android:sharedUserId="com.android.main.chajian"//主apk的包名 3。com.android.main.chajian在主apk和次apk中都要有定义,而且是路径要相同 package com.android.second.chajian; import android.app.Activity;
import android.os.Bundle; public class MainSecondChajianActivity extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
}
} =========================================================================== /** * 获取未安装的apk信息 * * @param ctx * @param apkPath * @return */ public static AppInfoData getApkFileInfo(Context ctx, String apkPath) { System.out.println(apkPath); File apkFile = new File(apkPath); if (!apkFile.exists() || !apkPath.toLowerCase().endsWith(".apk")) { System.out.println("文件路径不正确"); return null; } AppInfoData appInfoData; String PATH_PackageParser = "android.content.pm.PackageParser"; String PATH_AssetManager = "android.content.res.AssetManager"; try { //反射得到pkgParserCls对象并实例化,有参数 Class<?> pkgParserCls = Class.forName(PATH_PackageParser); Class<?>[] typeArgs = {String.class}; Constructor<?> pkgParserCt = pkgParserCls.getConstructor(typeArgs); Object[] valueArgs = {apkPath}; Object pkgParser = pkgParserCt.newInstance(valueArgs); //从pkgParserCls类得到parsePackage方法 DisplayMetrics metrics = new DisplayMetrics(); metrics.setToDefaults();//这个是与显示有关的, 这边使用默认 typeArgs = new Class<?>[]{File.class,String.class, DisplayMetrics.class,int.class}; Method pkgParser_parsePackageMtd = pkgParserCls.getDeclaredMethod( "parsePackage", typeArgs); valueArgs=new Object[]{new File(apkPath),apkPath,metrics,0}; //执行pkgParser_parsePackageMtd方法并返回 Object pkgParserPkg = pkgParser_parsePackageMtd.invoke(pkgParser, valueArgs); //从返回的对象得到名为"applicationInfo"的字段对象 if (pkgParserPkg==null) { return null; } Field appInfoFld = pkgParserPkg.getClass().getDeclaredField( "applicationInfo"); //从对象"pkgParserPkg"得到字段"appInfoFld"的值 if (appInfoFld.get(pkgParserPkg)==null) { return null; } ApplicationInfo info = (ApplicationInfo) appInfoFld .get(pkgParserPkg); //反射得到assetMagCls对象并实例化,无参 Class<?> assetMagCls = Class.forName(PATH_AssetManager); Object assetMag = assetMagCls.newInstance(); //从assetMagCls类得到addAssetPath方法 typeArgs = new Class[1]; typeArgs[0] = String.class; Method assetMag_addAssetPathMtd = assetMagCls.getDeclaredMethod( "addAssetPath", typeArgs); valueArgs = new Object[1]; valueArgs[0] = apkPath; //执行assetMag_addAssetPathMtd方法 assetMag_addAssetPathMtd.invoke(assetMag, valueArgs); //得到Resources对象并实例化,有参数 Resources res = ctx.getResources(); typeArgs = new Class[3]; typeArgs[0] = assetMag.getClass(); typeArgs[1] = res.getDisplayMetrics().getClass(); typeArgs[2] = res.getConfiguration().getClass(); Constructor<Resources> 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); //读取apk文件的信息 appInfoData = new AppInfoData(); if (info!=null) { if (info.icon != 0) {/ / 图片存在,则读取相关信息 Drawable icon = res.getDrawable(info.icon);// 图标 appInfoData.setAppicon(icon); } if (info.labelRes != 0) { String neme = (String) res.getText(info.labelRes);// 名字 appInfoData.setAppname(neme); }else { String apkName=apkFile.getName(); appInfoData.setAppname(apkName.substring(0,apkName.lastIndexOf("."))); } String pkgName = info.packageName;// 包名 appInfoData.setApppackage(pkgName ); }else { return null; } PackageManager pm = ctx.getPackageManager(); PackageInfo packageInfo = pm.getPackageArchiveInfo(apkPath, PackageManager.GET_ACTIVITIES); if (packageInfo != null) { appInfoData.setAppversion(packageInfo.versionName);//版本号 appInfoData.setAppversionCode(packageInfo.versionCode+"");//版本码 } return appInfoData; } catch (Exception e) { e.printStackTrace(); } return null; } 方法一:最直接的就是知道apk的包名和启动类名, 直接启动 [java] view plain copy
- IntentmIntent=newIntent();
- ComponentNamecomp=newComponentName("包名","类名");
- mIntent.setComponent(comp);
- mIntent.setAction("android.intent.action.VIEW");
- startActivity(mIntent);
方法二:如果只知道包名,在这种情况下通常也可以启动,通常调用 publicabstract Intent getLaunchIntentForPackage(String packageName) 大概意思就是返回一个程序入口的Intent,就是Java程序的Main方法。直接startActivity(返回的intent)即可。
Intent mIntent = getPackageManager() getLaunchIntentForPackage(packageName); if( mIntent != null ) startActivity(mIntent);
方法三:就是如何只提供apk,如何启动呢?在这种情况下,通常只能在sdk源代码下来编译完成
通常引入android.content.pm.PackageParser;
见code:
[java] view plain copy
- /*
- *UtilitymethodtogetapplicationinformationforagivenpackageURI
- */
- publicApplicationInfogetApplicationInfo(UripackageURI){
- finalStringarchiveFilePath=packageURI.getPath();
- PackageParserpackageParser=newPackageParser(archiveFilePath);
- FilesourceFile=newFile(archiveFilePath);
- DisplayMetricsmetrics=newDisplayMetrics();
- metrics.setToDefaults();
- PackageParser.Packagepkg=packageParser.parsePackage(sourceFile,archiveFilePath,metrics,0);
- if(pkg==null){
- returnnull;
- }
- returnpkg.applicationInfo;
- }
这样就可以得到该apk的包名,接下来方式就和方法二一样则可
DexClassLoader dLoader = new DexClassLoader("/sdcard/download/test.apk","/sdcard/download",null,ClassLoader.getSystemClassLoader().getParent()); Class calledClass = dLoader.loadClass("com.test.classname"); Intent it=new Intent(this, calledClass); it.setClassName("com.test", "com.test.classname"); startActivity(it);
PathClassLoader:String packagePath = "com.mypackage"; String classPath = "com.mypackage.ExternalClass";String apkName = null; try {apkName = getPackageManager().getApplicationInfo(packagePath,0).sourceDir;} catch (PackageManager.NameNotFoundException e) { // catch this }// add path to apk that contains classes you wish to loadString extraApkPath = apkName + ":/path/to/extraLib.apk"PathClassLoader pathClassLoader = new dalvik.system.PathClassLoader(apkName, ClassLoader.getSystemClassLoader());try {Class<?> handler = Class.forName(classPath, true, pathClassLoader);} catch (ClassNotFoundException e) {// catch this }.获取SD卡上的APK安装文件后,要用代码读出APK里面的信息,如icon等,的主要代码如下: Java代码private void getUninatllApkInfo(Context context, 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(); 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); 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 = context.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); } Log.d("ANDROID_LAB", "label=" + label); // 这里就是读取一个apk程序的图标 if (info.icon != 0) {this.icon = res.getDrawable(info.icon);appName = label.toString();packageName = info.packageName; }} catch (Exception e) { e.printStackTrace();} }
icon就是这个APK的图标,appName就是这个apk的名称,packageName就是这个apk的包名。
2.下面是如何获取所有的已经安装的非系统app的代码:
Java代码private ArrayList<InstalledAppInfo> getInstalledApps() {ArrayList<InstalledAppInfo> res = new ArrayList<InstalledAppInfo>();List<PackageInfo> packs = getPackageManager().getInstalledPackages(0);for (int i = 0; i < packs.size(); i++) { PackageInfo p = packs.get(i); if((p.applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) > 0){continue; } InstalledAppInfo newInfo = new InstalledAppInfo(); newInfo.setAppname(p.applicationInfo.loadLabel(getPackageManager()) .toString()); newInfo.setPname(p.packageName); newInfo.setVersionName(p.versionName); newInfo.setVersionCode(p.versionCode); newInfo.setIcon(p.applicationInfo.loadIcon(getPackageManager())); res.add(newInfo);}return res; }
其中的
Java代码if((p.applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) > 0){continue; }
用是过滤掉system app。好了, 虽然我们不能安装, 但用api去查看apk总该可以了吧?Google没有公开这个Api, 但又了上面这个方法, 我们可以使用了 //apk包的文件路径String apkPath = "/sdcard/qq.apk";//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);//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();//这里就是解析了, 四个参数, //源文件File, //目的文件路径(这个我也没搞清楚怎么回事, 看Android安装器源码, 用的是源文件路径, 但名字却是destFileName) //显示, DisplayMetrics metrics//flags, 这个真不知道是啥PackageParser.Package mPkgInfo = packageParser.parsePackage(new File(apkPath),apkPath, metrics, 0);//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;//Resources 是用来获取资源的 , 而这里获取的资源是在本程序之外的//至于为什么这么弄, 我搞不懂.Resources pRes = getResources();AssetManager assmgr = new AssetManager();assmgr.addAssetPath(apkPath);Resources res = new Resources(assmgr, pRes.getDisplayMetrics(), pRes.getConfiguration());CharSequence label = null;if (info.labelRes != 0) {try {label = res.getText(info.labelRes);} catch (Resources.NotFoundException e) {}}if (label == null) {label = (info.nonLocalizedLabel != null) ?info.nonLocalizedLabel : info.packageName;}//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.iv_test);image.setVisibility(View.VISIBLE);image.setImageDrawable(icon);}}应用安装是智能机的主要特点,即用户可以把各种应用(如游戏等)安装到手机上,并可以对其进行卸载等管理操作。APK是Android Package的缩写,即Android安装包。APK是类似Symbian Sis或Sisx的文件格式。通过将APK文件直接传到Android模拟器或Android手机中执行即可安装。 Android应用安装有如下四种方式 1. 系统应用安装�D�D开机时完成,没有安装界面 2. 网络下载应用安装�D�D通过market应用完成,没有安装界面 3. ADB工具安装�D�D没有安装界面。 4. 第三方应用安装�D�D通过SD卡里的APK文件安装,有安装界面,由packageinstaller.apk应用处理安装及卸载过程的界面。 应用安装的流程及路径 应用安装涉及到如下几个目录: system/app 系统自带的应用程序,无法删除data/app用户程序安装的目录,有删除权限。 安装时把apk文件复制到此目录data/data存放应用程序的数据Data/dalvik-cache将apk中的dex文件安装到dalvik-cache目录下(dex文件是dalvik虚拟机的可执行文件,其大小约为原始apk文件大小的四分之一) 安装过程:复制APK安装包到data/app目录下,解压并扫描安装包,把dex文件(Dalvik字节码)保存到dalvik-cache目录,并data/data目录下创建对应的应用数据目录。 卸载过程:删除安装过程中在上述三个目录下创建的文件及目录。 一、系统应用安装: PackageManagerService处理各种应用的安装,卸载,管理等工作,开机时由systemServer启动此服务 (源文件路径:androidframeworksaseservicesjavacomandroidserverPackageManagerService.java) PackageManagerService服务启动的流程: 1. 首先扫描安装“systemframework”目录下的jar包 1. scanDirLI(mFrameworkDir, PackageParser.PARSE_IS_SYSTEM, scanMode | SCAN_NO_DEX); 2.第二步扫描安装“systemapp”目录下的各个系统应用 scanDirLI(mSystemAppDir, PackageParser.PARSE_IS_SYSTEM, scanMode); 3.第三步扫描“dataapp”目录,即用户安装的第三方应用 scanDirLI(mAppInstallDir, 0, scanMode); 4.第四步扫描" dataapp-private"目录,即安装DRM保护的APK文件(目前没有遇到过此类的应用)。 scanDirLI(mDrmAppPrivateInstallDir,0, scanMode | SCAN_FORWARD_LOCKED); 安装应用的过程 1.scanDirLI(Filedir, int flags, int scanMode) 遍历安装指定目录下的文件 2.scanPackageLI(FilescanFile, File destCodeFile, FiledestResourceFile, int parseFlags, int scanMode) 安装package文件 3.scanPackageLI( File scanFile, File destCodeFile, FiledestResourceFile, PackageParser.Package pkg, intparseFlags, int scanMode) 通过解析安装包parsePackage获取到安装包的信息结构 4.mInstaller.install(pkgName,pkg.applicationInfo.uid, pkg.applicationInfo.uid); 实现文件复制的安装过程 (源文件路径:frameworksasecmdsinstalldinstalld.install) 二、从market上下载应用: Google Market应用需要使用gmail账户登录才可以使用,选择某一应用后,开始下载安装包,此过程中,在手机的信号区有进度条提示,下载完成后,会自动调用Packagemanager的接口安装,调用接口如下: public voidinstallPackage(final Uri packageURI, final IPackageInstallObserver observer,final int flags) final Uri packageURI:文件下载完成后保存的路径 final IPackageInstallObserver observer:处理返回的安装结果 final int flags:安装的参数,从market上下载的应用,安装参数为-r (replace) installPackage接口函数的安装过程: 1.public voidinstallPackage( final Uri packageURI, final IPackageInstallObserverobserver, final int flags, final String installerPackageName) final StringinstallerPackageName:安装完成后此名称保存在settings里,一般为null,不是关键参数 2.FiletmpPackageFile = copyTempInstallFile(packageURI, res); 把apk文件复制到临时目录下的临时文件 3.private voidinstallPackageLI(Uri pPackageURI, int pFlags, boolean newInstall,String installerPackageName, File tmpPackageFile, PackageInstalledInfo res) 解析临时文件,获取应用包名pkgName = PackageParser.parsePackageName( tmpPackageFile.getAbsolutePath(), 0); 4.判断如果带有参数INSTALL_REPLACE_EXISTING,则调用replacePackageLI(pkgName, tmpPackageFile, destFilePath,destPackageFile, destResourceFile, pkg, forwardLocked,newInstall, installerPackageName, res) 5.如果没有,则调用installNewPackageLI(pkgName, tmpPackageFile, destFilePath,destPackageFile, destResourceFile, pkg,forwardLocked, newInstall, installerPackageName, res); 6.privatePackageParser.Package scanPackageLI( File scanFile, File destCodeFile, FiledestResourceFile, PackageParser.Package pkg, intparseFlags, int scanMode) scanPackageLI以后的流程,与开机时的应用安装流程相同。 三、从ADB工具安装 Android Debug Bridge (adb) 是SDK自带的管理设备的工具,通过ADB命令行的方式也可以为手机或模拟器安装应用,其入口函数源文件为pm.java (源文件路径:androidframeworksasecmdspmsrccomandroidcommandspmpm.java) ADB命令行的形式为adb install <path_to_apk> ,还可以带安装参数如:"-l""-r" "-i" "-t" 函数runInstall()中判断参数 "-l"�D�DINSTALL_FORWARD_LOCK "-r"――INSTALL_REPLACE_EXISTING "-i" ――installerPackageName "-t"――INSTALL_ALLOW_TEST 我们常用的参数为-r,表示覆盖安装手机上已安装的同名应用。从market上下载的应用,也是直接传入这个参数安装的。 runInstall与market调用同样的接口完成应用安装。 public voidinstallPackage(android.net.Uri packageURI,android.content.pm.IPackageInstallObserver observer, int flags,java.lang.String installerPackageName) 四、第三方应用安装�D�D通过SD卡里的APK文件安装 把APK安装包保存在SD卡中,从手机里访问SD卡中的APK安装包,点击就可以启动安装界面,系统应用Packageinstaller.apk处理这种方式下的安装及卸载界面流程,如下图: PackageInstallerActivity负责解析包,判断是否是可用的Apk文件 创建临时安装文件/data/data/com.android.packageinstaller/files/ApiDemos.apk 并启动安装确认界面startInstallConfirm,列出解析得到的该应用基本信息。如果手机上已安装有同名应用,则需要用户确认是否要替换安装。 确认安装后,启动InstallAppProgress,调用安装接口完成安装。 pm.installPackage(mPackageURI,observer, installFlags); 其它: 1. PackageManagerService.java的内部类AppDirObserver实现了监听app目录的功能:当把某个APK拖到app目录下时,可以直接调用scanPackageLI完成安装。 2.手机数据区目录“data/system/packages.xml”文件中,包含了手机上所有已安装应用的基本信息,如安装路径,申请的permission等信息。
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