问题描述
- android Gallery运行不了,求解
-
自学android,书上有一个相簿的例子,代码写好后,运行不了,进入直接崩溃。我百度了类似的代码,感觉差不多。
因为是自学有一下问题:
1.在eclipse上,Gallery为什么被划掉了,
2.TypedArray a=obtainStyledAttributes(R.styleable.Gallery); mGalleryItemBackground=a.getResourceId(R.styleable.Gallery_android_galleryItemBackground, 0);
a.recycle();书上给的例子仅仅设定它有属性,那这个属性是什么,调用之后有什么用。
3.ImageAdapter中的各种方法,在程序中没有调用过,为什么要写。
4.怎么让这个程序能够正常运行。
非常感谢,看了好几天了,没看懂。
代码如下:
package com.example.xiangbo;import android.os.Bundle;
import android.app.Activity;
import android.content.Context;
import android.content.res.TypedArray;
import android.view.Menu;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.BaseAdapter;
import android.widget.Gallery;
import android.widget.ImageView;
import android.widget.Toast;public class MainActivity extends Activity {
@Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); Gallery g=(Gallery)findViewById(R.id.mygallery); g.setAdapter(new ImageAdapter(this)); //ImageAdapter ia=new ImageAdapter(this); g.setOnItemClickListener(new OnItemClickListener(){ public void onItemClick(AdapterView<?>parent,View v,int position,long id){ Toast.makeText(MainActivity.this,getString(R.string.my_gallery_text_pre)+position+getString(R.string.my_gallery_text_post),Toast.LENGTH_SHORT).show(); } public void onNothingSelected(AdapterView<?> arg0) { } }); } public class ImageAdapter extends BaseAdapter{ int mGalleryItemBackground; private Context mContext; public ImageAdapter(Context c){ super(); mContext=c; TypedArray a=obtainStyledAttributes(R.styleable.Gallery); mGalleryItemBackground=a.getResourceId(R.styleable.Gallery_android_galleryItemBackground, 0); a.recycle(); } public int getCount(){ return myImageIds.length; } public Object getItem(int position){ return position; } public long getItemId(int position){ return position; } public View getView(int position,View convertView,ViewGroup parent){ ImageView i=new ImageView(mContext); i.setImageResource(myImageIds[position]); i.setScaleType(ImageView.ScaleType.FIT_XY); i.setLayoutParams(new Gallery.LayoutParams(136, 88)); i.setBackgroundResource(mGalleryItemBackground); return i; } private Integer[] myImageIds={ R.drawable.a1, R.drawable.a2, R.drawable.a3, R.drawable.a4, R.drawable.a5, R.drawable.a6 }; } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.main, menu); return true; }
}
解决方案
我出现和你一样的问题了,你是怎么解决的
解决方案二:
android.wedge.gallery已经被弃用了
可以看一下http://blog.csdn.net/dazlly/article/details/7863923
时间: 2025-01-19 06:04:44