Android 类代码防止反编译的办法

//将此函数添加到要防止被反编译的类中即可！

//注意：1.for循环不可用do{}while(false)的形式来代替，否则无效！

//　　　2.a[0-i]=0;数组下标必须为数值计算(0-i)的形式，否则无效！

privatestaticvoid//static最好保留以防被优化掉此函数

AntiDecompile()

{

chara[]={0};

for(inti=0;

i<1;

i++)

{

a[0-i]=0;

}

}

在反编译工具下会报如下错误：

$./dex2jar.shclasses.dex

12:18:14.360ERRORp.a.d.reader.DexFileReader-Failonclass

java.lang.RuntimeException:Errorinmethod:[Lcom/example/antidecompile/MainActivity;.AntiDecompile()V]

atpxb.android.dex2jar.reader.DexFileReader.visitMethod(DexFileReader.java:479)[dex2jar-0.0.7-SNAPSHOT.jar:na]

atpxb.android.dex2jar.reader.DexFileReader.acceptClass(DexFileReader.java:300)[dex2jar-0.0.7-SNAPSHOT.jar:na]

atpxb.android.dex2jar.reader.DexFileReader.accept(DexFileReader.java:175)[dex2jar-0.0.7-SNAPSHOT.jar:na]

atpxb.android.dex2jar.v3.Main.doFile(Main.java:66)[dex2jar-0.0.7-SNAPSHOT.jar:na]

atpxb.android.dex2jar.v3.Main.main(Main.java:47)[dex2jar-0.0.7-SNAPSHOT.jar:na]

Causedby:java.lang.RuntimeException:NotsupportOpcode:[0x00d9]=RSUB_INT_LIT8yet!

atpxb.android.dex2jar.v3.V3CodeAdapter.visitInInsn(V3CodeAdapter.java:816)[dex2jar-0.0.7-SNAPSHOT.jar:na]

atpxb.android.dex2jar.reader.DexOpcodeAdapter.visit(DexOpcodeAdapter.java:317)[dex2jar-0.0.7-SNAPSHOT.jar:na]

atpxb.android.dex2jar.reader.DexCodeReader.accept(DexCodeReader.java:277)[dex2jar-0.0.7-SNAPSHOT.jar:na]

atpxb.android.dex2jar.reader.DexFileReader.visitMethod(DexFileReader.java:477)[dex2jar-0.0.7-SNAPSHOT.jar:na]

...4commonframesomitted

Exceptioninthread"main"java.lang.RuntimeException:java.lang.RuntimeException:Errorinmethod:[Lcom/example/antidecompile/MainActivity;.AntiDecompile()V]

atpxb.android.dex2jar.reader.DexFileReader.accept(DexFileReader.java:179)

atpxb.android.dex2jar.v3.Main.doFile(Main.java:66)

atpxb.android.dex2jar.v3.Main.main(Main.java:47)

Causedby:java.lang.RuntimeException:Errorinmethod:[Lcom/example/antidecompile/MainActivity;.AntiDecompile()V]

atpxb.android.dex2jar.reader.DexFileReader.visitMethod(DexFileReader.java:479)

atpxb.android.dex2jar.reader.DexFileReader.acceptClass(DexFileReader.java:300)

atpxb.android.dex2jar.reader.DexFileReader.accept(DexFileReader.java:175)

...2more

Causedby:java.lang.RuntimeException:NotsupportOpcode:[0x00d9]=RSUB_INT_LIT8yet!

atpxb.android.dex2jar.v3.V3CodeAdapter.visitInInsn(V3CodeAdapter.java:816)

atpxb.android.dex2jar.reader.DexOpcodeAdapter.visit(DexOpcodeAdapter.java:317)

atpxb.android.dex2jar.reader.DexCodeReader.accept(DexCodeReader.java:277)

atpxb.android.dex2jar.reader.DexFileReader.visitMethod(DexFileReader.java:477)

...4more