android图片加文字轮播效果，RollViewPager使用，简单修改源代码

简单看下效果图：



主要支持的一些功能：

支持无限循环。 触摸时会暂停播放，直到结束触摸一个延迟周期以后继续播放。 看起来就像这样。图片变化 文字也跟着变化。

 

主要操作过程：

1、在gradle中导入包：

 

compile

'com.jude:rollviewpager:1.2.9'

然后就是一些简单的操作了：

布局如下：

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<FrameLayout
android:layout_width="match_parent"
android:layout_height="180dp"
android:layout_alignParentTop="true"
android:layout_alignParentStart="true">

<com.jude.rollviewpager.RollPagerView
android:id="@+id/roll_view_pager"
android:layout_width="match_parent"
android:layout_height="180dp"
app:rollviewpager_play_delay="3000"/>

<TextView
android:id="@+id/text"
android:background="#88000000"
android:layout_width="match_parent"
android:layout_height="30dp"
android:textColor="@android:color/holo_orange_dark" />

</FrameLayout>

</RelativeLayout>

然后上代码：

import android.graphics.Color;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;

import com.jude.rollviewpager.RollPagerView;
import com.jude.rollviewpager.adapter.StaticPagerAdapter;

public class MainActivity extends AppCompatActivity {
private RollPagerView mRollViewPager;
TextView t1 ;
static MainActivity instance;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
instance = this;
mRollViewPager = (RollPagerView) findViewById(R.id.roll_view_pager);
t1 = (TextView) findViewById(R.id.text);
//设置播放时间间隔
mRollViewPager.setPlayDelay(2500);
//设置透明度
mRollViewPager.setAnimationDurtion(500);
//设置适配器
mRollViewPager.setAdapter(new TestNormalAdapter());

//设置指示器（顺序依次）
//自定义指示器图片
//设置圆点指示器颜色
//设置文字指示器
//隐藏指示器
//mRollViewPager.setHintView(new IconHintView(this, R.drawable.point_focus, R.drawable.point_normal));
mRollViewPager.setHintView(new ColorPointHintView(this, Color.YELLOW,Color.WHITE));
//mRollViewPager.setHintView(new TextHintView(this));
//mRollViewPager.setHintView(null);

}

private class TestNormalAdapter extends StaticPagerAdapter {
private int[] imgs = {
R.drawable.img1,
R.drawable.img2,
R.drawable.img3,
R.drawable.img4,
};

@Override
public View getView(ViewGroup container, int position) {
final  int picNo = position+1;
ImageView view = new ImageView(container.getContext());
view.setImageResource(imgs[position]);
view.setScaleType(ImageView.ScaleType.CENTER_CROP);
view.setLayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT));
Log.i("info","cha kan position:"+position);
view.setOnClickListener(new View.OnClickListener()      // 点击事件
{
@Override
public void onClick(View v)
{
Toast.makeText(MainActivity.this, "点击了第" + picNo + "张图片", Toast.LENGTH_SHORT).show();

}

});
view.getImageAlpha();
return view;
}

@Override
public int getCount() {
return imgs.length;
}
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {

return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {

return super.onOptionsItemSelected(item);
}
public void buju(int a){

switch (a){
case 1:
t1.setText("我是第1张图");
break;
case 2:
t1.setText("我是第2张图");
break;
case 3:
t1.setText("我是第3张图");
break;
case 4:
t1.setText("我是第4张图");
break;

}
}
}

这里需要重写 RollViewPager里面两个类的代码才能实现 文字 图片一起滚动：

import android.content.Context;
import android.graphics.drawable.Drawable;
import android.util.AttributeSet;
import android.view.Gravity;
import android.widget.ImageView;
import android.widget.LinearLayout;

import com.jude.rollviewpager.HintView;

public abstract class ShapeHintView extends LinearLayout implements HintView {
private ImageView[] mDots;
private int length = 0;
private int lastPosition = 0;

private Drawable dot_normal;
private Drawable dot_focus;

public ShapeHintView(Context context){
super(context);
}

public ShapeHintView(Context context, AttributeSet attrs) {
super(context, attrs);
}

public abstract Drawable makeFocusDrawable();

public abstract Drawable makeNormalDrawable();

@Override
public void initView(int length, int gravity) {
removeAllViews();
setOrientation(HORIZONTAL);
switch (gravity) {
case 0:
setGravity(Gravity.LEFT| Gravity.CENTER_VERTICAL);
break;
case 1:
setGravity(Gravity.CENTER);
break;
case 2:
setGravity(Gravity.RIGHT| Gravity.CENTER_VERTICAL);
break;
}

this.length = length;
mDots = new ImageView[length];

dot_focus = makeFocusDrawable();
dot_normal = makeNormalDrawable();

for (int i = 0; i < length; i++) {
mDots[i]=new ImageView(getContext());
LayoutParams dotlp = new LayoutParams(
LayoutParams.WRAP_CONTENT,
LayoutParams.WRAP_CONTENT);
dotlp.setMargins(10, 0, 10, 0);
mDots[i].setLayoutParams(dotlp);
mDots[i].setBackgroundDrawable(dot_normal);
addView(mDots[i]);
}

setCurrent(0);
}

@Override
public void setCurrent(int current) {
if (current < 0 || current > length - 1) {
return;
}
mDots[lastPosition].setBackgroundDrawable(dot_normal);
mDots[current].setBackgroundDrawable(dot_focus);
lastPosition = current;
MainActivity.instance.buju(current+1);
}
}

第二个 这样就实现了文字 图片一起滚动！

import android.content.Context;
import android.graphics.drawable.Drawable;
import android.graphics.drawable.GradientDrawable;
import android.util.Log;

import com.jude.rollviewpager.Util;

/**
* Created by Mr.Jude on 2016/1/10.
*/
public class ColorPointHintView extends ShapeHintView {
private int focusColor;
private int normalColor;

public ColorPointHintView(Context context,int focusColor,int normalColor) {
super(context);
this.focusColor = focusColor;
this.normalColor = normalColor;
Log.i("info","-----jin lai le  4");
}

@Override
public Drawable makeFocusDrawable() {
Log.i("info","-----jin lai le");
GradientDrawable dot_focus = new GradientDrawable();
dot_focus.setColor(focusColor);
dot_focus.setCornerRadius(Util.dip2px(getContext(), 4));
dot_focus.setSize(Util.dip2px(getContext(), 8), Util.dip2px(getContext(), 8));
return dot_focus;
}

@Override
public Drawable makeNormalDrawable() {
Log.i("info","-----jin lai le  2");
GradientDrawable dot_normal = new GradientDrawable();
dot_normal.setColor(normalColor);
dot_normal.setCornerRadius(Util.dip2px(getContext(), 4));
dot_normal.setSize(Util.dip2px(getContext(), 8), Util.dip2px(getContext(), 8));
return dot_normal;
}

}

dome 地址：http://download.csdn.net/download/vip573117/9991625

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