java - Android-无法解决java.lang.StringIndexOutOfBoundsException

Question

我在寻找解决方案甚至找不到此错误的原因时遇到了麻烦。此错误在Eclipse中的同一代码中不存在(用于测试)，但在Android Studio应用中使用时会因错误而崩溃。

从Logcat:

 java.lang.IllegalStateException: Could not execute method of the activity
            at android.view.View$1.onClick(View.java:4020)
            at android.view.View.performClick(View.java:4780)
            at android.view.View$PerformClick.run(View.java:19866)
            at android.os.Handler.handleCallback(Handler.java:739)
            at android.os.Handler.dispatchMessage(Handler.java:95)
            at android.os.Looper.loop(Looper.java:135)
            at android.app.ActivityThread.main(ActivityThread.java:5257)
            at java.lang.reflect.Method.invoke(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:372)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
     Caused by: java.lang.reflect.InvocationTargetException
            at java.lang.reflect.Method.invoke(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:372)
            at android.view.View$1.onClick(View.java:4015)
            at android.view.View.performClick(View.java:4780)
            at android.view.View$PerformClick.run(View.java:19866)
            at android.os.Handler.handleCallback(Handler.java:739)
            at android.os.Handler.dispatchMessage(Handler.java:95)
            at android.os.Looper.loop(Looper.java:135)
            at android.app.ActivityThread.main(ActivityThread.java:5257)
            at java.lang.reflect.Method.invoke(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:372)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
     Caused by: java.lang.ExceptionInInitializerError
            at com.bmc.thirdparty.org.apache.commons.lang.builder.ToStringStyle$MultiLineToStringStyle.<init>(ToStringStyle.java:2135)
            at com.bmc.thirdparty.org.apache.commons.lang.builder.ToStringStyle.<clinit>(ToStringStyle.java:79)
            at java.lang.Class.classForName(Native Method)
            at java.lang.Class.forName(Class.java:309)
            at java.lang.Class.forName(Class.java:273)
            at com.bmc.arsys.api.Config.if(Unknown Source)
            at com.bmc.arsys.api.Config.applyDefaults(Unknown Source)
            at com.bmc.arsys.apitransport.ApiConfig.<init>(Unknown Source)
            at com.bmc.arsys.api.Config.<init>(Unknown Source)
            at com.bmc.arsys.api.Config.<clinit>(Unknown Source)
            at com.bmc.arsys.api.session.a.a(Unknown Source)
            at com.bmc.arsys.api.session.a.<init>(Unknown Source)
            at com.bmc.arsys.api.ARServerUser.<clinit>(Unknown Source)
            at flashmanagment.app.ARS.initializeServer(ARS.java:41)
            at flashmanagment.app.MainActivity.loadData(MainActivity.java:51)
            at java.lang.reflect.Method.invoke(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:372)
            at android.view.View$1.onClick(View.java:4015)
            at android.view.View.performClick(View.java:4780)
            at android.view.View$PerformClick.run(View.java:19866)
            at android.os.Handler.handleCallback(Handler.java:739)
            at android.os.Handler.dispatchMessage(Handler.java:95)
            at android.os.Looper.loop(Looper.java:135)
            at android.app.ActivityThread.main(ActivityThread.java:5257)
            at java.lang.reflect.Method.invoke(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:372)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
     Caused by: java.lang.StringIndexOutOfBoundsException: length=1; regionStart=0; regionLength=3
            at java.lang.String.startEndAndLength(String.java:504)
            at java.lang.String.substring(String.java:1333)
            at com.bmc.thirdparty.org.apache.commons.lang.SystemUtils.getJavaVersionAsFloat(SystemUtils.java:1122)
            at com.bmc.thirdparty.org.apache.commons.lang.SystemUtils.<clinit>(SystemUtils.java:818)
            at com.bmc.thirdparty.org.apache.commons.lang.builder.ToStringStyle$MultiLineToStringStyle.<init>(ToStringStyle.java:2135)
            at com.bmc.thirdparty.org.apache.commons.lang.builder.ToStringStyle.<clinit>(ToStringStyle.java:79)
            at java.lang.Class.classForName(Native Method)
            at java.lang.Class.forName(Class.java:309)
            at java.lang.Class.forName(Class.java:273)
            at com.bmc.arsys.api.Config.if(Unknown Source)
            at com.bmc.arsys.api.Config.applyDefaults(Unknown Source)
            at com.bmc.arsys.apitransport.ApiConfig.<init>(Unknown Source)
            at com.bmc.arsys.api.Config.<init>(Unknown Source)
            at com.bmc.arsys.api.Config.<clinit>(Unknown Source)
            at com.bmc.arsys.api.session.a.a(Unknown Source)
            at com.bmc.arsys.api.session.a.<init>(Unknown Source)
            at com.bmc.arsys.api.ARServerUser.<clinit>(Unknown Source)
            at flashmanagment.app.ARS.initializeServer(ARS.java:41)
            at flashmanagment.app.MainActivity.loadData(MainActivity.java:51)
            at java.lang.reflect.Method.invoke(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:372)
            at android.view.View$1.onClick(View.java:4015)
            at android.view.View.performClick(View.java:4780)
            at android.view.View$PerformClick.run(View.java:19866)
            at android.os.Handler.handleCallback(Handler.java:739)
            at android.os.Handler.dispatchMessage(Handler.java:95)
            at android.os.Looper.loop(Looper.java:135)
            at android.app.ActivityThread.main(ActivityThread.java:5257)
            at java.lang.reflect.Method.invoke(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:372)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)

我从bmc导入的库是否出错？

来自主 Activity 的相关代码，通过单击按钮调用:

   public void loadData(View v){
        ARS.getInstance().initializeServer("username","password");   
    }   

从Java类:

public class ARS {

public static ARS instance = new ARS();

public static ARServerUser server;
public static ARS getInstance(){
    return instance;
}

public void initializeServer(String user, String password){
    server = new ARServerUser(user,password,null,"serverStringHere",portNumberHere);

}

同样，在Eclipse中使用了相同的代码，没有错误。任何帮助将不胜感激。

编辑SystemUtils.java:1122

    1118    private static float More ...getJavaVersionAsFloat() {
1119        if (JAVA_VERSION_TRIMMED == null) {
1120            return 0f;
1121        }
1122        String str = JAVA_VERSION_TRIMMED.substring(0, 3);
1123        if (JAVA_VERSION_TRIMMED.length() >= 5) {
1124            str = str + JAVA_VERSION_TRIMMED.substring(4, 5);
1125        }
1126        try {
1127            return Float.parseFloat(str);
1128        } catch (Exception ex) {
1129            return 0;
1130        }
1131    }

Answer 1

您应该提供有关程序的更多信息，因为此代码不是完整的图片。您正在尝试调用按钮单击，但是您的应用程序处于不正确的状态。