使用AXMLPrinter2,smali,baksmali来实现Android 编译，反编
一、前言：
诸如layout里的布局及权限<LinearLayout?
??? xmlns:android="http://schemas.android.com/apk/res/android"?
??? android:orientation="1"?
??? android:layout_width="-1"?
??? android:layout_height="-1"?
??? >?
??? <WebView?
??????? android:id="@7F050000"?
??????? android:layout_width="-1"?
??????? android:layout_height="-2"?
??????? >?
??? </WebView>?
</LinearLayout>
为了比对打开源程序中的main.xml代码如下(大家比对一下吧):
<?xml version="1.0" encoding="utf-8"?>?
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"?
??? android:orientation="vertical"?
??? android:layout_width="fill_parent"?
??? android:layout_height="fill_parent"?
??? >?
<WebView?
??? android:id="@+id/apk_web"?
??? android:layout_height="wrap_content"?
??? android:layout_width="fill_parent"?
?????
/>?
</LinearLayout>
2.用baksmali.jar反编译classes.dex:将ApkInstaller.apk里的classes.dex解压到tools目录里，然后baksmali.jar就派上用场了，在cmd命令行里输入如下命令:java -jar baksmali.jar -o classout/ classes.dex .
下面我们看一下ApkInstaller.smali内容是什么，如以下代码：
.class public Lcom/tutor/apkinstaller/ApkInstaller;?
.super Landroid/app/Activity;?
.source "ApkInstaller.java"?
# instance fields?
.field private apkWeb:Landroid/webkit/WebView;?
# direct methods?
.method public constructor <init>()V?
??? .registers 1?
??? .prologue?
??? .line 8?
??? invoke-direct {p0}, Landroid/app/Activity;-><init>()V?
??? return-void?
.end method?
# virtual methods?
.method public onCreate(Landroid/os/Bundle;)V?
??? .registers 5?
??? .parameter "savedInstanceState"?
??? .prologue?
??? .line 13?
??? invoke-super {p0, p1}, Landroid/app/Activity;->onCreate(Landroid/os/Bundle;)V?
??? .line 14?
??? const/high16 v2, 0x7f03?
??? invoke-virtual {p0, v2}, Lcom/tutor/apkinstaller/ApkInstaller;->setContentView(I)V?
??? .line 15?
??? const/high16 v2, 0x7f05?
??? invoke-virtual {p0, v2}, Lcom/tutor/apkinstaller/ApkInstaller;->findViewById(I)Landroid/view/View;?
??? move-result-object v2?
??? check-cast v2, Landroid/webkit/WebView;?
??? iput-object v2, p0, Lcom/tutor/apkinstaller/ApkInstaller;->apkWeb:Landroid/webkit/WebView;?
??? .line 16?
??? iget-object v2, p0, Lcom/tutor/apkinstaller/ApkInstaller;->apkWeb:Landroid/webkit/WebView;?
??? invoke-virtual {v2}, Landroid/webkit/WebView;->getSettings()Landroid/webkit/WebSettings;?
??? move-result-object v1?
??? .line 17?
??? .local v1, webSettings:Landroid/webkit/WebSettings;?
??? const/4 v2, 0x1?
??? invoke-virtual {v1, v2}, Landroid/webkit/WebSettings;->setJavaScriptEnabled(Z)V?
??? .line 19?
??? const-string v0, "http://frankiewei.net/apk/demos/main/index.html#home"?
??? .line 20?
??? .local v0, apkUrl:Ljava/lang/String;?
??? iget-object v2, p0, Lcom/tutor/apkinstaller/ApkInstaller;->apkWeb:Landroid/webkit/WebView;?
??? invoke-virtual {v2, v0}, Landroid/webkit/WebView;->loadUrl(Ljava/lang/String;)V?
??? .line 21?
??? return-void?
.end method?
同样为了比对我们看一下ApkInstaller.java的源代码如下:
package com.tutor.apkinstaller;?
import android.app.Activity;?
import android.os.Bundle;?
import android.webkit.WebSettings;?
import android.webkit.WebView;?
public class ApkInstaller extends Activity {?
????
??? private WebView apkWeb;?
??? @Override?
??? public void onCreate(Bundle savedInstanceState) {?
??????? super.onCreate(savedInstanceState);?
??????? setContentView(R.layout.main);?
?????? apkWeb = (WebView)findViewById(R.id.apk_web);?
?????? WebSettings webSettings = apkWeb.getSettings();?
?????? webSettings.setJavaScriptEnabled(true);?
???????
?????? String apkUrl = "http://frankiewei.net/apk/demos/main/index.html#home";?
?????? apkWeb.loadUrl(apkUrl);?
??? }?
}?
我相信大家 已经能看出来门道来了吧，hoho~3.用smali.jar编译classout成classes.dex:我们上一步已经将classes.dex反编译成了.smali文件，好了，我们看看smali文件看够了，在偿试把它编译成classes.dex吧，输入如下命令:java -jar smali.jar classout/ -o
我们可以将新生成的classes.dex塞入ApkInstaller.apk里覆盖原来的classes.dex文件，这样我们的apk还是一样能用的哦
