java.lang.NullPointerException Attempt to invoke virtual method 'int android.widget.Editor

java.lang.NullPointerException Attempt to invoke virtual method 'int android.widget.Editoron a null object reference android.widget.Editor.touchPositionIsInSelection(Editor.java:955)android.widget.Editor.touchPositionIsInSelection(Editor.java:901)android.widget.Editor.performLongClick(Editor.java:1002)android.widget.TextView.performLongClick(TextView.java:9261)android.view.View$CheckForLongPress.run(View.java:21151)android.os.Handler.handleCallback(Handler.java:742)android.os.Handler.dispatchMessage(Handler.java:95)android.os.Looper.loop(Looper.java:154)android.app.ActivityThread.main(ActivityThread.java:5523)java.lang.reflect.Method.invoke(Native Method)com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:739)com.android.internal.os.ZygoteInit.main(ZygoteInit.java:629)

主要出现在小米手机上
java.lang.NullPointerException Attempt to invoke virtual method 'int android.widget.Editor_第1张图片

问题原因：

view.setMovementMethod(LinkMovementMethod.getInstance());

一般用于点击 textview中的可跳转链接的时候使用

但是长按这个View的时候就会报这个异常。

    public final void setMovementMethod(MovementMethod movement) {        if (mMovement != movement) {            mMovement = movement;            if (movement != null && !(mText instanceof Spannable)) {                setText(mText);            }            fixFocusableAndClickableSettings();            // SelectionModifierCursorController depends on textCanBeSelected, which depends on            // mMovement            if (mEditor != null) mEditor.prepareCursorControllers();        }    }    private void fixFocusableAndClickableSettings() {        if (mMovement != null || (mEditor != null && mEditor.mKeyListener != null)) {            setFocusable(FOCUSABLE);            setClickable(true);            setLongClickable(true);        } else {            setFocusable(FOCUSABLE_AUTO);            setClickable(false);            setLongClickable(false);        }    }

可以看到,

会调用到setLongClickable(true);方法,

此时长按就会出现如上log所示的崩溃,

而解决方案就一目了然了,

有两种,都是屏蔽长按事件罢了:

调用 TextView.setLongClickable(false); 禁用长按事件
android:longClickable=”false”
消费掉长按事件即可;

TextView.setOnLongClickListener(new View.OnLongClickListener() {    @Override    public boolean onLongClick(View v) {        return true;    }});

不过我看到Android-26的sdk已经修复了这个问题了，有加空判断

java.lang.NullPointerException Attempt to invoke virtual method 'int android.widget.Editor_第2张图片

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