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我正在尝试对字符串使用 split 方法。这会引发 ArrayOutOfBoundsException,我不知道为什么。我尝试了许多字符串和许多分隔符。

    String temp = "abcd&efgh&ijkl&mnop";
    String[] tempArr = temp.split("ijk");

这是错误日志:

10-13 12:20:30.619: E/AndroidRuntime(775): FATAL EXCEPTION: main
10-13 12:20:30.619: E/AndroidRuntime(775): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.lino/com.example.lino.LinesActivity}:    java.lang.ArrayIndexOutOfBoundsException
10-13 12:20:30.619: E/AndroidRuntime(775):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1647)
10-13 12:20:30.619: E/AndroidRuntime(775):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663)
10-13 12:20:30.619: E/AndroidRuntime(775):  at android.app.ActivityThread.access$1500(ActivityThread.java:117)
10-13 12:20:30.619: E/AndroidRuntime(775):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931)
10-13 12:20:30.619: E/AndroidRuntime(775):  at android.os.Handler.dispatchMessage(Handler.java:99)
10-13 12:20:30.619: E/AndroidRuntime(775):  at android.os.Looper.loop(Looper.java:123)
10-13 12:20:30.619: E/AndroidRuntime(775):  at android.app.ActivityThread.main(ActivityThread.java:3683)
10-13 12:20:30.619: E/AndroidRuntime(775):  at java.lang.reflect.Method.invokeNative(Native Method)
10-13 12:20:30.619: E/AndroidRuntime(775):  at java.lang.reflect.Method.invoke(Method.java:507)
10-13 12:20:30.619: E/AndroidRuntime(775):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
10-13 12:20:30.619: E/AndroidRuntime(775):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
10-13 12:20:30.619: E/AndroidRuntime(775):  at dalvik.system.NativeStart.main(Native Method)
10-13 12:20:30.619: E/AndroidRuntime(775): Caused by: java.lang.ArrayIndexOutOfBoundsException
10-13 12:20:30.619: E/AndroidRuntime(775):  at com.example.lino.LinesActivity.onCreate(LinesActivity.java:32)
10-13 12:20:30.619: E/AndroidRuntime(775):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
10-13 12:20:30.619: E/AndroidRuntime(775):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1611)
10-13 12:20:30.619: E/AndroidRuntime(775):  ... 11 more

编辑

这是整个班级:

    package com.example.lino;

    import java.lang.reflect.Array;
    import java.util.ArrayList;
    import java.util.List;

    import android.os.Bundle;
    import android.app.Activity;
    import android.util.TypedValue;
    import android.view.ViewGroup.LayoutParams;
    import android.widget.LinearLayout;
    import android.widget.TextView;


    public class LinesActivity extends Activity {

        TextView tvTitle;
        String bussinessId, bussinessTitle;
        String[] passedString;
        List<Line> linesList;

        @Override
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.lines_layout);

            tvTitle = (TextView) findViewById(R.id.tvMainTitle);

            Bundle passedBundle = getIntent().getExtras();
            passedString = passedBundle.getString("BussinessName").split(":");

            bussinessId = passedString[0];
            bussinessTitle = passedString[1]; // THIS IS LINE 32, BUT IT'S WORKING WELL

            tvTitle.setText(bussinessTitle);

            try {
                String temp = "abcd&efgh&ijkl&mnop";
                String[] tempArr = temp.split("ijk");

            } catch (Exception e) {
                e.printStackTrace();

            }
        }
    }
4

3 回答 3

4

跑步 :

String temp = "abcd&efgh&ijkl&mnop";
String[] tempArr = temp.split("ijk");
System.out.println(Arrays.toString(tempArr));

我明白了

[abcd&efgh&, l&mnop]

没有例外。

在我的编辑器中,第 32 行实际上显示为:

bussinessId = passedString[0];

这将表明第一个String.split

passedString = passedBundle.getString("BussinessName").split(":");

不是你想要的。

检查 的内容,passedBundle.getString("BussinessName")看它是否包含:字符。

于 2012-10-13T12:38:52.940 回答
3
passedString = passedBundle.getString("BussinessName").split(":");

我猜你的passedBundle.getString("BussinessName").split(":");

正在返回,only one element您正在尝试second使用passedStringbussinessTitle = passedString[1];

fetching在打印元素之前,您的日志中passedString array的长度或passedString

System.out.println(passedString.length);

并且在从传递的字符串数组中访问元素之前,最好设置一个条件

if(passedString.length>0)
{
bussinessId = passedString[0];
bussinessTitle = passedString[1]; 

}
于 2012-10-13T13:12:54.173 回答
1

您给出的代码不能抛出异常和崩溃。

我猜你忘记复制代码 LinesActivity 的第 32 行,如 logcat 中所述。

我很确定您正在阅读不存在的数组行:tempArr

于 2012-10-13T12:39:35.977 回答