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来源：互联网发布：超人电力软件编辑：程序博客网时间：2024/06/06 02:57
public class ViewPagerIndacaterActivity extends AppCompatActivity implements View.OnClickListener{    @BindView(R.id.ll_head)    LinearLayout llHead;    @BindView(R.id.hsv)    HorizontalScrollView hsv;    @BindView(R.id.viewpager)    ViewPager viewpager;    private String[] titles;    private ArrayList<TextView> textViewList;    @Override    protected void onCreate(@Nullable Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_viewpager_indacater);        ButterKnife.bind(this);        titles = new String[] { "头条", "娱乐", "科技", "信息", "八卦", "北京", "上海", "天津",                "重庆", "大大燕网" };        textViewList = new ArrayList<TextView>();        for (int i = 0; i < titles.length ; i++) {            TextView textView = new TextView(ViewPagerIndacaterActivity.this);            textView.setText(titles[i]);            textView.setTextSize(20);            textView.setId(i+1000);            textView.setOnClickListener(this);            //先定义出来layoutParams,把要配的配置等封装到layoutParams,            if(i ==0){                textView.setTextColor(Color.RED);            }else {                textView.setTextColor(Color.BLACK);            }            LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);            layoutParams.setMargins(20,10,20,10);            //添加view的时候,用参数;            llHead.addView(textView,layoutParams);            textViewList.add(textView);        }        MAdapter mAdapter = new MAdapter(getSupportFragmentManager());        viewpager.setAdapter(mAdapter);        //设置viewpager滑动的监听;        viewpager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {            @Override            public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {                for (int i = 0; i < textViewList.size(); i++) {                    if (position == i) {                        textViewList.get(i).setTextColor(Color.RED);                    } else {                        textViewList.get(i).setTextColor(Color.BLACK);                    }                }                //让scrollView滑动                TextView textView = textViewList.get(position);                //20为margin值;                int width = textView.getWidth();                hsv.scrollTo((width*position)+20 ,0);            }            @Override            public void onPageSelected(int position) {            }            @Override            public void onPageScrollStateChanged(int state) {            }        });    }    class MAdapter extends FragmentPagerAdapter{        public MAdapter(FragmentManager fm) {            super(fm);        }        @Override        public Fragment getItem(int position) {            return IndicaterFragment.getInstance(textViewList.get(position).getText().toString());        }        @Override        public int getCount() {            return textViewList.size();        }    }    //实现onClick方法    @Override    public void onClick(View v) {        int id = v.getId();        viewpager.setCurrentItem(id-1000);    }}
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