android - 尝试在空对象引用上调用虚拟方法 'void android.widget.Editor$InsertionPointCursorController.show()'

Question

Fatal Exception: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.Editor$InsertionPointCursorController.show()' on a null object reference
       at android.widget.Editor.performLongClick(Editor.java:1174)

       at android.widget.TextView.performLongClick(TextView.java:12717)

       at android.view.View.performLongClick(View.java:6954)

       at android.view.View$CheckForLongPress.run(View.java:26066)

       at android.os.Handler.handleCallback(Handler.java:789)

       at android.os.Handler.dispatchMessage(Handler.java:98)

       at android.os.Looper.loop(Looper.java:164)

       at android.app.ActivityThread.main(ActivityThread.java:6944)

       at java.lang.reflect.Method.invoke(Method.java)
       at 
com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:327)

       at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1374)

任何人都可以帮助我解决这个崩溃问题。我是如何解决这个问题的。它一次又一次地在织物上报告。

Answer 1

有些设备在没有焦点的情况下长按它们给我带来了这个问题

在布局的每个可编辑组件中添加监听器OnLongClick

textView.setOnLongClickListener(new View.OnLongClickListener() {
    public boolean onLongClick(View v) {
        textView.requestFocus();
        return false;
    }
});