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Android 发布时间：2022-04-28 发布网站：大佬教程 code.js-code.com

大佬教程收集整理的这篇文章主要介绍了Android实现类似网易新闻选项卡动态滑动效果，大佬教程大佬觉得挺不错的，现在分享给大家，也给大家做个参考。

本文会实现一个类似网易新闻（不说网易新闻大家可能不知道大概是什么样子）点击超多选项卡，选项卡动态滑动的效果。

首先来看看布局，就是用horizontalscrollview控件来实现滑动的效果，里面包含了一个布局。

接下来我们在onCreat方法中加载布局和构建我们需要显示的数据

<code class="hljs avrasm"> @Override
protected void onCreate(Bundle savedInstanceStatE) {
super.onCreate(savedInstanceStatE);
setContentView(R.layout.activity_tabbar);
tv_tabname= (TextView) this.findViewById(R.id.tv_tabName);
titleList = new ArrayList<String>();
titleList.add("推荐");
titleList.add("热点");
titleList.add("北京");
titleList.add("体育");
titleList.add("娱乐");
titleList.add("足球");
titleList.add("巴萨");
titleList.add("汽车");
}</String></code>

加载布局，用RadioGroup动态的加载多个自定义的RadioButton

<code class="hljs avrasm">hs_activity_tabbar= (horizontalscrollview) this.findViewById(R.id.hs_activity_tabbar);
ll_activity_tabbar_content= (LinearLayout) this.findViewById(R.id.ll_activity_tabbar_content);
//选项卡布局
myRadioGroup = new RadioGroup(this);
myRadioGroup.setLayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,ViewGroup.LayoutParams.MATCH_PARENT));
myRadioGroup.setOrientation(LinearLayout.HORIZONTAL);
ll_activity_tabbar_content.addView(myRadioGroup);
for (int i = 0; i < titleList.size(); i++) {
String chAnnel = titleList.get(i);
RadioButton radio = new RadioButton(this);
radio.setButtonDrawable(android.R.color.transparent);
radio.setBACkgroundresource(R.drawable.radiobtn_SELEctor);
ColorStateList csl = getresources().getColorStateList(R.color.radiobtn_text_color);
radio.setTextColor(csl);
LinearLayout.LayoutParams l = new LinearLayout.LayoutParams((int) SizeHelper.dp2px(this,80),ViewGroup.LayoutParams.MATCH_PARENT,Gravity.CENTER);
radio.setLayoutParams(l);
radio.setTextSize(15);
radio.setGravity(Gravity.CENTER);
radio.setText(chAnnel);
radio.setTag(chAnnel);
myRadioGroup.addView(radio);
}</code>

最后也就点击选项卡的时候会有一个动态滑动的效果，其实就是利用horizontalscrollview的smoothScrollTo方法来实现的

<code class="hljs cs"> myRadioGroup.setOncheckedchangelistener(new RadioGroup.oncheckedchangelistener() {
@Override
public void oncheckedChanged(RadioGroup group,int checkedId) {
int radioButtonId = group.getcheckedRadioButtonId();
//根据ID获取RadioButton的实例
RadioButton rb = (RadioButton) findViewById(radioButtonId);
chAnnel = (String) rb.getTag();
mCurrentcheckedRadioLeft = rb.getLeft();//更新当前按钮距离左边的距离
int width=(int) SizeHelper.dp2px(TabbarActivity.this,140);
hs_activity_tabbar.smoothScrollTo((int) mCurrentcheckedRadioLeft - width,0);
tv_tabname.setText(chAnnel);
}
});
//设定默认被选中的选项卡为第一项
if (!titleList.isEmpty()) {
myRadioGroup.check(myRadioGroup.getChildAt(0).getId());
}</code>

dp2px方法如下用来将dp转换为px：

<code class="hljs java"> public static float dp2px(Context context,float dp) {
final float scale = context.getresources().getDisplaymetrics().density;
return (dp * scalE);
}</code>

全部代码为：

<code class="hljs avrasm">package com.example.liuwangshu.myslidetabbar;
import android.content.res.ColorStateList;
import android.support.v7.app.AppCompatActivity;
import android.os.bundle;
import android.view.Gravity;
import android.view.ViewGroup;
import android.widget.horizontalscrollview;
import android.widget.LinearLayout;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.TextView;
import java.util.ArrayList;
import java.util.List;
public class TabbarActivity extends AppCompatActivity {
private horizontalscrollview hs_activity_tabbar;
private RadioGroup myRadioGroup;
private List<String> titleList;
private LinearLayout ll_activity_tabbar_content;
private float mCurrentcheckedRadioLeft;//当前被选中的RadioButton距离左侧的距离
private String chAnnel;
private TextView tv_tabname;
@Override
protected void onCreate(Bundle savedInstanceStatE) {
super.onCreate(savedInstanceStatE);
setContentView(R.layout.activity_tabbar);
tv_tabname= (TextView) this.findViewById(R.id.tv_tabName);
titleList = new ArrayList<String>();
titleList.add("推荐");
titleList.add("热点");
titleList.add("北京");
titleList.add("体育");
titleList.add("娱乐");
titleList.add("足球");
titleList.add("巴萨");
titleList.add("汽车");
initGroup();
}
private void initGroup() {
hs_activity_tabbar= (horizontalscrollview) this.findViewById(R.id.hs_activity_tabbar);
ll_activity_tabbar_content= (LinearLayout) this.findViewById(R.id.ll_activity_tabbar_content);
//选项卡布局
myRadioGroup = new RadioGroup(this);
myRadioGroup.setLayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,Gravity.CENTER);
radio.setLayoutParams(l);
radio.setTextSize(15);
radio.setGravity(Gravity.CENTER);
radio.setText(chAnnel);
radio.setTag(chAnnel);
myRadioGroup.addView(radio);
}
myRadioGroup.setOncheckedchangelistener(new RadioGroup.oncheckedchangelistener() {
@Override
public void oncheckedChanged(RadioGroup group,0);
tv_tabname.setText(chAnnel);
}
});
//设定默认被选中的选项卡为第一项
if (!titleList.isEmpty()) {
myRadioGroup.check(myRadioGroup.getChildAt(0).getId());
}
}
}
</String></String></code>