ScrollView莫名滚动

hztgcl1986 2014-05-16 11:30:48

一个ViewSwitcher，一个HorizontalScrollView，当ViewSwitcher切换内容时（调用showNext()）竟然会导致HorizontalScrollView也跟着滚动。



package inspur.hzt.test;



import android.app.Activity;

import android.os.Bundle;

import android.view.KeyEvent;

import android.view.View;

import android.widget.ViewSwitcher;



public class HSVActivity extends Activity {



    ViewSwitcher switcher;

    

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        

        setContentView(R.layout.activity_hsv);

        

        switcher = (ViewSwitcher) findViewById(R.id.viewSwitcher1);

        //hsv = (HorizontalScrollView) findViewById(R.id.horizontalScrollView1);

    }



    @Override

    public boolean onKeyDown(int keyCode, KeyEvent event) {

        

        if (keyCode == KeyEvent.KEYCODE_DPAD_RIGHT || keyCode == KeyEvent.KEYCODE_DPAD_LEFT) {

            View v = getCurrentFocus();

            if (v.getId() == R.id.button1 || v.getId() == R.id.button2) {

                switcher.showNext(); //这里竟然会导致HorizontalScrollView也跟着滚动，不知道如何解决

                return true;

            }

        }



        return super.onKeyDown(keyCode, event);

    }



}



<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:orientation="vertical" >



    <HorizontalScrollView

        android:id="@+id/horizontalScrollView1"

        android:layout_width="120dp"

        android:layout_height="30dp"

        android:layout_marginLeft="40dp"

        android:layout_marginRight="40dp"

        android:layout_marginTop="100dp"

        android:fillViewport="true" >



        <LinearLayout

            android:id="@+id/ll1"

            android:layout_width="1680dp"

            android:layout_height="match_parent"

            android:orientation="horizontal" >



            <TextView

                android:layout_width="120dp"

                android:layout_height="match_parent"

                android:focusable="true"

                android:text="TextView1"

                android:textColor="@color/textview_color"

                android:textSize="20sp" >



                    <requestFocus />

            </TextView>



            <TextView

                android:layout_width="120dp"

                android:layout_height="match_parent"

                android:focusable="true"

                android:text="TextView2"

                android:textColor="@color/textview_color"

                android:textSize="20sp" />

         

            <TextView

                android:layout_width="120dp"

                android:layout_height="match_parent"

                android:focusable="true"

                android:textSize="20sp"

                android:textColor="@color/textview_color"

                android:text="TextView3" />



        </LinearLayout>



    </HorizontalScrollView>



    <ViewSwitcher

        android:id="@+id/viewSwitcher1"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:layout_marginTop="100dp" >



        <Button

            android:id="@+id/button1"

            android:layout_width="120dp"

            android:layout_height="100dp"

            android:nextFocusLeft="@id/button1"

            android:nextFocusRight="@id/button1"

            android:text="Button 1" />

        

        <Button

            android:id="@+id/button2"

            android:layout_width="120dp"

            android:layout_height="100dp"

            android:nextFocusLeft="@id/button2"

            android:nextFocusRight="@id/button2"

            android:text="Button 2" />

    </ViewSwitcher>



</LinearLayout>