赣州网站设计哪里好,外墙设计装修效果图软件,企业网站开发哪家好,中国seo排行榜完成需求的时候涉及到这个所以撸了一下本文章是本人原创#xff0c;转载请带原地址连接先放效果图(霁雪清虹是目标)#xff1a;首先需要一个自定义HorizontalScrollView#xff0c;复写一个View的onScrollChanged方法#xff0c;用于监听滑动变化代码如下#xff1a…完成需求的时候涉及到这个所以撸了一下本文章是本人原创转载请带原地址连接先放效果图(霁雪清虹是目标)首先需要一个自定义HorizontalScrollView复写一个View的onScrollChanged方法用于监听滑动变化代码如下import android.content.Context;import android.util.AttributeSet;import android.widget.HorizontalScrollView;/*** Created by 霁雪清虹 on 2016/9/29.*/public class MyHorizontalScrollView extends HorizontalScrollView {private MyScrollListener myScrollListener;public MyHorizontalScrollView(Context context, AttributeSet attrs) {super(context, attrs);}Overrideprotected void onScrollChanged(int l, int t, int oldl, int oldt) {super.onScrollChanged(l, t, oldl, oldt);if (myScrollListener ! null) {myScrollListener.onScrollChanged();}}public void setMyScrollListener(MyScrollListener myScrollListener) {this.myScrollListener myScrollListener;}public interface MyScrollListener {void onScrollChanged();}}然后就是MainActivity的onScrollChanged中的代码就是重点了代码如下import android.graphics.Point;import android.graphics.Rect;import android.os.Bundle;import android.support.v7.app.AppCompatActivity;import android.util.Log;import android.view.LayoutInflater;import android.view.View;import android.widget.LinearLayout;import android.widget.RelativeLayout;import android.widget.TextView;import android.widget.Toast;import java.util.ArrayList;import java.util.List;public class MainActivity extends AppCompatActivity implements View.OnClickListener, MyHorizontalScrollView.MyScrollListener {protected TextView targetTextView;private final static String NAME 霁雪清虹;protected MyHorizontalScrollView horizontalScrollView;private Rect rect;private Rect globalRect;private Point globalOffset;private List contentList new ArrayList();Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);super.setContentView(R.layout.activity_main);initView();bindDataToUi();rect new Rect();globalRect new Rect();globalOffset new Point();}private void bindDataToUi() {contentList.add(天涯);contentList.add(兰亭书序);contentList.add(天涯);contentList.add(兰亭书序);contentList.add(晨曦);contentList.add(虹猫);contentList.add(天涯);contentList.add(兰亭书序);contentList.add(霁雪清虹);contentList.add(懵逼虹);contentList.add(小逗比);contentList.add(若冰);contentList.add(晨曦);contentList.add(虹猫);contentList.add(天涯);contentList.add(兰亭书序);for (String str : contentList) {RelativeLayout contentPanel (RelativeLayout) LayoutInflater.from(this).inflate(R.layout.content, null);((LinearLayout) horizontalScrollView.getChildAt(0)).addView(contentPanel);TextView text (TextView) contentPanel.findViewById(R.id.text);if (NAME.equals(str)) {targetTextView text;}text.setText(str);}}Overridepublic void onClick(View view) {}private void initView() {horizontalScrollView (MyHorizontalScrollView) findViewById(R.id.horizontalScrollView);horizontalScrollView.setMyScrollListener(this);}private boolean isFirstBack;Overridepublic void onBackPressed() {if (isFirstBack) {super.onBackPressed();}isFirstBack true;Toast.makeText(this, 再按一次退出程序, Toast.LENGTH_SHORT).show();}Overrideprotected void onDestroy() {super.onDestroy();}Overridepublic void onScrollChanged() {targetTextView.getGlobalVisibleRect(globalRect, globalOffset);/* Log.e(TAG,globalRect is globalRect.toString());Log.e(TAG,globalOffset is globalOffset.toString());Log.e(TAG,reat width is reat.toString());*/if (targetTextView.getLocalVisibleRect(rect)) {//左可见if (globalOffset.x 0 rect.width() targetTextView.getWidth()) {Log.e(TAG, 目标霁雪清虹左半边可见);} else if (globalOffset.x 0 rect.width() targetTextView.getWidth()) {Log.e(TAG, 目标霁雪清虹右半边可见);} else {Log.e(TAG, 目标霁雪清虹全可见);}} else {Log.e(TAG, 目标霁雪清虹不可见);}}}下面是Activity的xmlxmlns:androidhttp://schemas.android.com/apk/res/androidxmlns:toolshttp://schemas.android.com/toolsandroid:idid/activity_mainandroid:layout_widthmatch_parentandroid:layout_heightmatch_parentandroid:paddingBottomdimen/activity_vertical_marginandroid:paddingLeftdimen/activity_horizontal_marginandroid:paddingRightdimen/activity_horizontal_marginandroid:paddingTopdimen/activity_vertical_margintools:contextcom.example.jiawei11.animationdemo.MainActivityandroid:idid/horizontalScrollViewandroid:layout_widthmatch_parentandroid:layout_heightwrap_contentandroid:layout_widthmatch_parentandroid:layout_heightwrap_contentandroid:paddingLeft5dpandroid:paddingRight5dp下面是 content.xmlandroid:layout_widthmatch_parentandroid:layout_heightmatch_parentandroid:paddingLeft5dpandroid:paddingRight5dpandroid:idid/textandroid:layout_widthwrap_contentandroid:layout_heightwrap_content/
