HorizontalScrollView实现Gallery-优快云博客

本文介绍了一种通过继承LinearLayout并自定义MovieLayout组件的方法，实现了视图的左右滚动效果。该组件配合MovieAdapter使用，可以动态加载多个带有图片和文字的视图，并支持点击事件。

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从简便的方式，继承LinearLayout再布局了添加视图，使其左右滚动。

主界面Activity:

 
   view plain 
  
 packagecom.xmz.activity; 
 importjava.util.HashMap; 
 importjava.util.Map; 
 importandroid.app.Activity; 
 importandroid.os.Bundle; 
 publicclassMainActivityextendsActivity{ 
 privateMovieLayoutmovieLayout; 
 privateMovieAdapteradapter; 
 @Override 
 publicvoidonCreate(BundlesavedInstanceState){ 
 super.onCreate(savedInstanceState); 
 setContentView(R.layout.main); 
  
 movieLayout=(MovieLayout)findViewById(R.id.movieLayout); 
 adapter=newMovieAdapter(this); 
 for(inti=0;i<10;i++){ 
 Map<String,Object>map=newHashMap<String,Object>(); 
 map.put("image",getResources().getDrawable(R.drawable.image)); 
 map.put("text","电影"+(i+1)); 
 adapter.addObject(map); 
 } 
 movieLayout.setAdapter(adapter); 
 } 
 } 

显示一连串视图的MovieLayout:

 
   view plain 
  
 packagecom.xmz.activity; 
 importjava.util.Map; 
 importandroid.content.Context; 
 importandroid.util.AttributeSet; 
 importandroid.view.View; 
 importandroid.widget.LinearLayout; 
 importandroid.widget.LinearLayout.LayoutParams; 
 importandroid.widget.Toast; 
 publicclassMovieLayoutextendsLinearLayout{ 
 privateMovieAdapteradapter; 
 privateContextcontext; 
 publicMovieLayout(Contextcontext,AttributeSetattrs){ 
 super(context,attrs); 
 this.context=context; 
 } 
  
 publicvoidsetAdapter(MovieAdapteradapter){ 
 this.adapter=adapter; 
 for(inti=0;i<adapter.getCount();i++){ 
 finalMap<String,Object>map=adapter.getItem(i); 
 Viewview=adapter.getView(i,null,null); 
 view.setPadding(10,0,10,0); 
 view.setOnClickListener(newOnClickListener(){ 
 @Override 
 publicvoidonClick(Viewv){ 
 Toast.makeText(context,"您点击了"+map.get("text"),Toast.LENGTH_SHORT).show(); 
 } 
 }); 
 this.setOrientation(HORIZONTAL); 
 this.addView(view,newLinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONTENT)); 
 } 
 } 
 } 