Question

.method public c()Ljava/lang/String;
.locals 3

const/4 v1, 0x0

const-string v0, "wifi"

invoke-virtual {p0, v0}, Lcom/genwen/looltv/start/Appstart;->getSystemService(Ljava/lang/String;)Ljava/lang/Object;

move-result-object v0

check-cast v0, Landroid/net/wifi/WifiManager;

if-nez v0, :cond_1

move-object v0, v1

:goto_0
if-eqz v0, :cond_2

invoke-virtual {v0}, Landroid/net/wifi/WifiInfo;->getMacAddress()Ljava/lang/String;

move-result-object v0

if-eqz v0, :cond_0

const-string v1, ":"

const-string v2, ""

invoke-virtual {v0, v1, v2}, Ljava/lang/String;->replaceAll(Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;

move-result-object v0

new-instance v1, Ljava/lang/StringBuilder;

const-string v2, "8c0f"

invoke-direct {v1, v2}, Ljava/lang/StringBuilder;-><init>(Ljava/lang/String;)V

invoke-virtual {v1, v0}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

move-result-object v0

invoke-virtual {v0}, Ljava/lang/StringBuilder;->toString()Ljava/lang/String;

move-result-object v0

:cond_0
:goto_1
return-object v0

:cond_1
invoke-virtual {v0}, Landroid/net/wifi/WifiManager;->getConnectionInfo()Landroid/net/wifi/WifiInfo;

move-result-object v0

goto :goto_0

:cond_2
move-object v0, v1

goto :goto_1
.end method

这是一个简单的smali函数，它在从mac地址剥离：之后返回设备的“8c0f”的设备的mac地址。

我希望它返回一个静态mac地址，如'8c0f0f0f0f0f0f0f'而不是真正的mac地址。我怎么能这样做？

Answer 1

在return-object v0执行以下操作之前

const-string v0, "8c0f0f0f0f0f0f0f"

所以您的完整代码将会读取

const-string v0, "8c0f0f0f0f0f0f0f"
return-object v0

如果需要，您还可以注释掉使用StringBuilder的其他代码。

Answer 2

这里我使用apktool将java转换为smali。

Java代码：

private static final String TAG = "Loop";

public static String getTag()
{
    return TAG;
}

smali code：

# static fields
.field private static final TAG:Ljava/lang/String; = "Loop"

.method public static getTag()Ljava/lang/String;
    .locals 1

    .prologue
  .line 35
    const-string v0, "Loop"

  .line 38
    return-object v0
.end method

如何在smali函数中返回静态结果

2 个答案: