Question

我正在使用代码用数组中的字符串填充EditText视图。然后我使用.setSelection（）函数将光标移动到视图的末尾，以便更容易地允许用户将字符附加到字符串。这适用于8个字符或更少字符的所有字符串。但是，如果数组中的字符串大于8个字符，我收到以下错误消息：

java.lang.IndexOutOfBoundsException: setSpan (9 ... 9) ends beyond length 8

以下是代码：

TransactionDataView = (EditText) findViewById(R.id.etTransactionData);
TransactionDataView.setText(TransactionData[TransactionDataIndex]);
TransactionDataView.setSelection(TransactionData[TransactionDataIndex].length());

从LogCat我可以看到数组下标是什么，字符串值和字符串的长度。在尝试设置选择后，我立即收到IndexOutOfBoundsException。

06-14 10:18:52.244: D/DataEntry(706): TransactionDataIndex = 0
06-14 10:18:52.244: D/DataEntry(706): TransactionData = 123456789
06-14 10:18:52.244: D/DataEntry(706): TransactionData.Length = 9
06-14 10:18:52.244: W/dalvikvm(706): threadid=1: thread exiting with uncaught exception (group=0x42065438)
06-14 10:18:52.264: E/AndroidRuntime(706): FATAL EXCEPTION: main
06-14 10:18:52.264: E/AndroidRuntime(706): java.lang.IllegalStateException: Could not execute method of the activity
06-14 10:18:52.264: E/AndroidRuntime(706):  at android.view.View$1.onClick(View.java:3674)
06-14 10:18:52.264: E/AndroidRuntime(706):  at android.view.View.performClick(View.java:4198)
06-14 10:18:52.264: E/AndroidRuntime(706):  at android.view.View$PerformClick.run(View.java:17164)
06-14 10:18:52.264: E/AndroidRuntime(706):  at android.os.Handler.handleCallback(Handler.java:615)
06-14 10:18:52.264: E/AndroidRuntime(706):  at android.os.Handler.dispatchMessage(Handler.java:92)
06-14 10:18:52.264: E/AndroidRuntime(706):  at android.os.Looper.loop(Looper.java:137)
06-14 10:18:52.264: E/AndroidRuntime(706):  at android.app.ActivityThread.main(ActivityThread.java:4918)
06-14 10:18:52.264: E/AndroidRuntime(706):  at java.lang.reflect.Method.invokeNative(Native Method)
06-14 10:18:52.264: E/AndroidRuntime(706):  at java.lang.reflect.Method.invoke(Method.java:511)
06-14 10:18:52.264: E/AndroidRuntime(706):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1004)
06-14 10:18:52.264: E/AndroidRuntime(706):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:771)
06-14 10:18:52.264: E/AndroidRuntime(706):  at dalvik.system.NativeStart.main(Native Method)
06-14 10:18:52.264: E/AndroidRuntime(706): Caused by: java.lang.reflect.InvocationTargetException
06-14 10:18:52.264: E/AndroidRuntime(706):  at java.lang.reflect.Method.invokeNative(Native Method)
06-14 10:18:52.264: E/AndroidRuntime(706):  at java.lang.reflect.Method.invoke(Method.java:511)
06-14 10:18:52.264: E/AndroidRuntime(706):  at android.view.View$1.onClick(View.java:3669)
06-14 10:18:52.264: E/AndroidRuntime(706):  ... 11 more
06-14 10:18:52.264: E/AndroidRuntime(706): Caused by: java.lang.IndexOutOfBoundsException: setSpan (9 ... 9) ends beyond length 8
06-14 10:18:52.264: E/AndroidRuntime(706):  at android.text.SpannableStringBuilder.checkRange(SpannableStringBuilder.java:1016)
06-14 10:18:52.264: E/AndroidRuntime(706):  at android.text.SpannableStringBuilder.setSpan(SpannableStringBuilder.java:592)
06-14 10:18:52.264: E/AndroidRuntime(706):  at android.text.SpannableStringBuilder.setSpan(SpannableStringBuilder.java:588)
06-14 10:18:52.264: E/AndroidRuntime(706):  at android.text.Selection.setSelection(Selection.java:104)
06-14 10:18:52.264: E/AndroidRuntime(706):  at android.text.Selection.setSelection(Selection.java:115)
06-14 10:18:52.264: E/AndroidRuntime(706):  at android.widget.EditText.setSelection(EditText.java:108)
06-14 10:18:52.264: E/AndroidRuntime(706):  at com.worldgiftcard.mobileterminal.DataEntry.onClick(DataEntry.java:152)
06-14 10:18:52.264: E/AndroidRuntime(706):  ... 14 more

还有其他人遇到过这个吗？这是Android代码中的错误吗？任何人都可以提出建议吗？

任何帮助将不胜感激。感谢。

Answer 1

尝试更改

TransactionDataView.setSelection(TransactionData[TransactionDataIndex].length());

到

TransactionDataView.setSelection(TransactionDataView.getText().length());

Answer 2

在IndexOutOfBoundsException中，结尾处的长度（8）不是EditText值的长度，而是其android：maxLength属性值。在您的情况下，此值被隐含地或明确地设置为8，因此您的例外的原因。您需要确保没有setSelection（）超出EditText的maxLength。

RGDS。

EditText setSelection不适用于大于8的位置

2 个答案: