一个炒鸡好用的 indicator 开源指示器-蒲公英云

一个炒鸡好用的 indicator 开源指示器

github 地址: https://github.com/ongakuer/CircleIndicator

xml 布局文件

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

drawable 下面画出自己的指示器样式 dot_selector.xml

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

<solid android:color="@color/colorAccent"/>
<stroke android:width="1dp" android:color="@color/colorAccent" />
<size android:width="20dp" android:height="20dp" />

</shape>

dot_unselector

<?xml version=”1.0” encoding=”utf-8”?>
java代码

package com.example.indecater;

import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;

import java.util.ArrayList;

import me.relex.circleindicator.CircleIndicator;

public class MainActivity extends AppCompatActivity {
```
int [] images = {R.mipmap.bg_welcome_huawei1,R.mipmap.bg_welcome_huawei2,
                R.mipmap.bg_welcome_huawei3,R.mipmap.bg_welcome_huawei4
                };
private ArrayList<ImageView> arrayList;
```

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        ViewPager pager = (ViewPager) findViewById(R.id.vp_image);
        CircleIndicator indicator = (CircleIndicator) findViewById(R.id.indicator);
        arrayList = new ArrayList<>();
        for(int i = 0;i<images.length;i++){
            ImageView imageView = new ImageView(this);
            imageView.setBackgroundResource(images[i]);
            arrayList.add(imageView);
        }
        pager.setAdapter(new MyAdapter());
        indicator.setViewPager(pager);
    }
    class MyAdapter extends PagerAdapter{
        @Override
        public int getCount() {
            return images.length;
        }
        @Override
        public boolean isViewFromObject(View view, Object object) {
            return view == object;
        }
        @Override
        public Object instantiateItem(ViewGroup container, int position) {
            container.addView(arrayList.get(position));
            return arrayList.get(position);
        }
        @Override
        public void destroyItem(ViewGroup container, int position, Object object) {
            container.removeView((View)object);
        }
    }
}