在initData()对list集合添加imageview的时候发现我设置的imageView的宽和高无效
谢谢了帮帮小白的我
布局文件

 <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

    <android.support.v4.view.ViewPager
        android:id="@+id/pager"
        android:layout_width="match_parent"
        android:layout_height="match_parent" >
    </android.support.v4.view.ViewPager>

    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal|bottom"
        android:orientation="horizontal"
        android:padding="20dp" >

        <ImageView
            android:id="@+id/img_choose1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:padding="5dp"
            android:src="@drawable/page_choose" />

        <ImageView
            android:id="@+id/img_choose2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:padding="5dp"
            android:src="@drawable/page_unchoose" />

        <ImageView
            android:id="@+id/img_choose3"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:padding="5dp"
            android:src="@drawable/page_unchoose" />

        <ImageView
            android:id="@+id/img_choose4"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:padding="5dp"
            android:src="@drawable/page_unchoose" />

        <ImageView
            android:id="@+id/img_choose5"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:padding="5dp"
            android:src="@drawable/page_unchoose" />

        <ImageView
            android:id="@+id/img_choose6"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:padding="5dp"
            android:src="@drawable/page_unchoose" />

        <ImageView
            android:id="@+id/img_choose7"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:padding="5dp"
            android:src="@drawable/page_unchoose" />

        <ImageView
            android:id="@+id/img_choose8"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:padding="5dp"
            android:src="@drawable/page_unchoose" />

        <ImageView
            android:id="@+id/img_choose9"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:padding="5dp"
            android:src="@drawable/page_unchoose" />
    </LinearLayout>

</FrameLayout>

MainActivity

 package com.example.viewpager;

import java.util.ArrayList;
import java.util.List;

import android.os.Bundle;
import android.app.Activity;
import android.support.v4.view.ViewPager;
import android.view.Menu;
import android.view.View;
import android.view.ViewGroup.LayoutParams;
import android.widget.ImageView;

public class MainActivity extends Activity {

    private List<View> list_image = new ArrayList<View>();
    private ViewPager pager;
    private int img[] = { R.drawable.beauty1, R.drawable.beauty2,
            R.drawable.beauty3, R.drawable.beauty4, R.drawable.beauty5,
            R.drawable.beauty6, R.drawable.beauty7, R.drawable.beauty8,
            R.drawable.beauty9 };

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        pager = (ViewPager) findViewById(R.id.pager);
        initData();
        MyViewPagerAdapter adapter = new MyViewPagerAdapter(list_image);
        pager.setAdapter(adapter);
    }

    private void initData() {
        // TODO Auto-generated method stub
        for (int i : img) {
            ImageView imageView = new ImageView(this);
            //这里无效啊  怎么办。。
            //想设置图片填充容器的。
            LayoutParams params = new LayoutParams(LayoutParams.MATCH_PARENT,
                    LayoutParams.MATCH_PARENT);
            imageView.setImageResource(i);  
            imageView.setLayoutParams(params);
            list_image.add(imageView);
        }
    }
}

MyViewPagerAdapter

 package com.example.viewpager;

import java.util.ArrayList;
import java.util.List;

import android.support.v4.view.PagerAdapter;
import android.view.View;
import android.view.ViewGroup;

public class MyViewPagerAdapter extends PagerAdapter{

    private List<View> list_image = new ArrayList<View>();

    public MyViewPagerAdapter(List<View> list_image){
        this.list_image=list_image;
    }
    @Override
    public int getCount() {
        // TODO Auto-generated method stub
        return list_image.size();
    }

    @Override
    public boolean isViewFromObject(View arg0, Object arg1) {
        // TODO Auto-generated method stub
        return arg0==arg1;
    }
    @Override
    public Object instantiateItem(ViewGroup container, int position) {
        // TODO Auto-generated method stub
        container.addView(list_image.get(position));
        return list_image.get(position);
    }

    @Override
    public void destroyItem(ViewGroup container, int position, Object object) {
        // TODO Auto-generated method stub
        container.removeView(list_image.get(position));
    }

}

UC浏览器手机版 如何使 padding 生效

Young_Gao

3个回复

UC浏览器手机版如何使 padding 生效