自从画廊贬值以来,我正在尝试创建一个新的画廊风格应用程序。
我遇到的主要问题是,当我尝试运行以下代码时,我无法摆脱错误“dimen 无法解析或不是字段”。我在这里阅读了一些网站和一些帖子,说这与导入“import com.example.test.R;”有关。但是,即使有错误仍然存在,如果有人可以提供帮助,那将是惊人的。
加仑.java:
package com.example.test;
import android.app.Activity;
import android.os.Bundle;
import android.support.v4.view.ViewPager;
public class Gall extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_gall);
ViewPager viewPager = (ViewPager) findViewById(R.id.view_pager);
ImgAdapt adapter = new ImgAdapt(this);
viewPager.setAdapter(adapter);
}
}
activity_gall.xml:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
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:orientation="vertical" >
<android.support.v4.view.ViewPager
android:id="@+id/view_pager"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</RelativeLayout>
ImgAdapt.java:
package com.example.test;
import android.content.Context;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
public class ImgAdapt extends PagerAdapter {
Context context;
private int[] GalImages = new int[]
{
R.drawable.one,
R.drawable.two,
R.drawable.three
};
ImgAdapt(Context context){
this.context=context;
}
public int getCount() {
return GalImages.length;
}
public boolean isViewFromObject(View view, Object object) {
return view == ((ImageView) object);
}
public Object instantiateItem(ViewGroup container, int position) {
ImageView imageView = new ImageView(context);
int padding = context.getResources().getDimensionPixelSize(R.dimen.padding_medium);
imageView.setPadding(padding, padding, padding, padding);
imageView.setScaleType(ImageView.ScaleType.CENTER_INSIDE);
imageView.setImageResource(GalImages[position]);
((ViewPager) container).addView(imageView, 0);
return imageView;
}
public void destroyItem(ViewGroup container, int position, Object object) {
((ViewPager) container).removeView((ImageView) object);
}
}
很多代码,对不起,如果这是一个模糊的问题,但行中的“dimen”
int padding = context.getResources().getDimensionPixelSize(R.dimen.padding_medium);
是唯一给我一个错误的部分。