Android瀑布流
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//最外面嵌套RelativeLayout布局
<android.support.v7.widget.RecyclerView android:id="@+id/rv" android:layout_width="match_parent" android:layout_height="match_parent" android:layout_margin="10dp"/>
//Rvitem布局
<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="wrap_content" android:layout_height="wrap_content" android:padding="5dp" android:orientation="vertical"> <ImageView android:id="@+id/iv" android:layout_width="match_parent" android:layout_height="match_parent" android:adjustViewBounds="true" android:scaleType="fitXY" android:padding="10dp"/></LinearLayout>
//加载网络图片的工具类
public class ImageWorl extends Application { @Override public void onCreate() { super.onCreate(); //创建ImageLoaderConfiguration ImageLoaderConfiguration config = new ImageLoaderConfiguration.Builder(this).build(); //初始化ImageLoader ImageLoader.getInstance().init(config); }}//网络图片来源public class ImageUtil { public final static String[] imageUrls = new String[]{ "http://img.my.csdn.net/uploads/201508/05/1438760758_3497.jpg", "http://img.my.csdn.net/uploads/201508/05/1438760758_6667.jpg", "http://img.my.csdn.net/uploads/201508/05/1438760757_3588.jpg", "http://img.my.csdn.net/uploads/201508/05/1438760756_3304.jpg", "http://img.my.csdn.net/uploads/201508/05/1438760755_6715.jpeg", "http://img.my.csdn.net/uploads/201508/05/1438760726_5120.jpg", "http://img.my.csdn.net/uploads/201508/05/1438760726_8364.jpg", "http://img.my.csdn.net/uploads/201508/05/1438760725_4031.jpg", "http://img.my.csdn.net/uploads/201508/05/1438760724_9463.jpg", "http://img.my.csdn.net/uploads/201508/05/1438760724_2371.jpg", "http://img.my.csdn.net/uploads/201508/05/1438760707_4653.jpg", "http://img.my.csdn.net/uploads/201508/05/1438760706_6864.jpg", "http://img.my.csdn.net/uploads/201508/05/1438760706_9279.jpg", "http://img.my.csdn.net/uploads/201508/05/1438760704_2341.jpg", "http://img.my.csdn.net/uploads/201508/05/1438760704_5707.jpg", "http://img.my.csdn.net/uploads/201508/05/1438760685_5091.jpg", "http://img.my.csdn.net/uploads/201508/05/1438760685_4444.jpg", "http://img.my.csdn.net/uploads/201508/05/1438760684_8827.jpg", "http://img.my.csdn.net/uploads/201508/05/1438760683_3691.jpg", "http://img.my.csdn.net/uploads/201508/05/1438760683_7315.jpg", "http://img.my.csdn.net/uploads/201508/05/1438760663_7318.jpg", "http://img.my.csdn.net/uploads/201508/05/1438760662_3454.jpg", "http://img.my.csdn.net/uploads/201508/05/1438760662_5113.jpg", "http://img.my.csdn.net/uploads/201508/05/1438760661_3305.jpg", "http://img.my.csdn.net/uploads/201508/05/1438760661_7416.jpg", "http://img.my.csdn.net/uploads/201508/05/1438760589_2946.jpg", "http://img.my.csdn.net/uploads/201508/05/1438760589_1100.jpg", "http://img.my.csdn.net/uploads/201508/05/1438760588_8297.jpg", "http://img.my.csdn.net/uploads/201508/05/1438760587_2575.jpg", "http://img.my.csdn.net/uploads/201508/05/1438760587_8906.jpg", "http://img.my.csdn.net/uploads/201508/05/1438760550_2875.jpg", "http://img.my.csdn.net/uploads/201508/05/1438760550_9517.jpg", "http://img.my.csdn.net/uploads/201508/05/1438760549_7093.jpg", "http://img.my.csdn.net/uploads/201508/05/1438760549_1352.jpg", "http://img.my.csdn.net/uploads/201508/05/1438760548_2780.jpg", "http://img.my.csdn.net/uploads/201508/05/1438760531_1776.jpg", "http://img.my.csdn.net/uploads/201508/05/1438760531_1380.jpg", "http://img.my.csdn.net/uploads/201508/05/1438760530_4944.jpg", "http://img.my.csdn.net/uploads/201508/05/1438760530_5750.jpg", "http://img.my.csdn.net/uploads/201508/05/1438760529_3289.jpg", "http://img.my.csdn.net/uploads/201508/05/1438760500_7871.jpg", "http://img.my.csdn.net/uploads/201508/05/1438760500_6063.jpg", "http://img.my.csdn.net/uploads/201508/05/1438760499_6304.jpeg", "http://img.my.csdn.net/uploads/201508/05/1438760499_5081.jpg", "http://img.my.csdn.net/uploads/201508/05/1438760498_7007.jpg", "http://img.my.csdn.net/uploads/201508/05/1438760478_3128.jpg", "http://img.my.csdn.net/uploads/201508/05/1438760478_6766.jpg", "http://img.my.csdn.net/uploads/201508/05/1438760477_1358.jpg", "http://img.my.csdn.net/uploads/201508/05/1438760477_3540.jpg", "http://img.my.csdn.net/uploads/201508/05/1438760476_1240.jpg", "http://img.my.csdn.net/uploads/201508/05/1438760446_7993.jpg", "http://img.my.csdn.net/uploads/201508/05/1438760446_3641.jpg", "http://img.my.csdn.net/uploads/201508/05/1438760445_3283.jpg", "http://img.my.csdn.net/uploads/201508/05/1438760444_8623.jpg", "http://img.my.csdn.net/uploads/201508/05/1438760444_6822.jpg", "http://img.my.csdn.net/uploads/201508/05/1438760422_2224.jpg", "http://img.my.csdn.net/uploads/201508/05/1438760421_2824.jpg", "http://img.my.csdn.net/uploads/201508/05/1438760420_2660.jpg", "http://img.my.csdn.net/uploads/201508/05/1438760420_7188.jpg", "http://img.my.csdn.net/uploads/201508/05/1438760419_4123.jpg", };}//Activity页面public class MainActivity extends AppCompatActivity { private RecyclerView mRv; private List<String> list = new ArrayList<>(); private RvAdapter adapter; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); mRv = (RecyclerView) findViewById(R.id.rv); StaggeredGridLayoutManager stagger = new StaggeredGridLayoutManager(3, StaggeredGridLayoutManager.VERTICAL); mRv.setLayoutManager(stagger); for (String url: ImageUtil.imageUrls) { list.add(url); } adapter = new RvAdapter(list, this); mRv.setAdapter(adapter); }}//适配器public class RvAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> { private List<String> list; private Context context; public RvAdapter(List<String> list, Context context) { this.list = list; this.context = context; } @Override public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { View view = View.inflate(context, R.layout.rvitem, null); return new MyViewHolder(view); } @Override public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) { String str = list.get(position); MyViewHolder holder1 = (MyViewHolder) holder; ImageLoader.getInstance().displayImage(str,holder1.iv); holder1.iv.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { Intent intent = new Intent(context, GoodsActivity.class); context.startActivity(intent); } }); } @Override public int getItemCount() { return list.size(); } class MyViewHolder extends RecyclerView.ViewHolder{ ImageView iv; public MyViewHolder(View itemView) { super(itemView); iv = (ImageView) itemView.findViewById(R.id.iv); int width = ((Activity) context).getWindowManager().getDefaultDisplay().getWidth(); ViewGroup.LayoutParams params = iv.getLayoutParams(); //设置图片的相对于屏幕的宽高比 params.width = width/3; params.height = (int) (200 + Math.random() * 400) ; iv.setLayoutParams(params); } }}
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