Android高仿IOS动态高斯模糊背景

package com.zzyd.webview; import android.graphics.Color; import android.os.Bundle; import android.support.annotation.Nullable; import android.support.v7.app.AppCompatActivity; import android.support.v7.widget.GridLayoutManager; import android.support.v7.widget.LinearLayoutManager; import android.support.v7.widget.RecyclerView; import android.view.Gravity; import android.view.View; import android.view.ViewGroup; import android.view.Window; import android.view.WindowManager; import android.widget.ImageView; import android.widget.TextView; import com.bumptech.glide.Glide; import com.wonderkiln.blurkit.BlurLayout; import java.util.ArrayList; import java.util.List; import me.everything.android.ui.overscroll.OverScrollDecoratorHelper; /** * Created by Administrator on 2018/1/3. */ public class BlurActivity extends AppCompatActivity { private BlurLayout blurLayout; private RecyclerView recyclerView; private List<String> images = new ArrayList<>(); @Override protected void onCreate(@Nullable Bundle savedInstanceState) { super.onCreate(savedInstanceState); if(getWindow() != null){ getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS); } if(getSupportActionBar() != null){ getSupportActionBar().hide(); } setContentView(R.layout.blur_layout); blurLayout = findViewById(R.id.blurLayout); recyclerView = findViewById(R.id.listview); recyclerView.setLayoutManager(new GridLayoutManager(this,2)); recyclerView.setAdapter(new ThisAdapter()); OverScrollDecoratorHelper.setUpOverScroll(recyclerView,OverScrollDecoratorHelper.ORIENTATION_VERTICAL); blurLayout.setBlurRadius(25); recyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() { @Override public void onScrollStateChanged(RecyclerView recyclerView, int newState) { super.onScrollStateChanged(recyclerView, newState); } @Override public void onScrolled(RecyclerView recyclerView, int dx, int dy) { super.onScrolled(recyclerView, dx, dy); // blurLayout.invalidate(); } }); images.add("https://ss0.bdstatic.com/70cFvHSh_Q1YnxGkpoWK1HF6hhy/it/u=1230799154,4259669654&fm=27&gp=0.jpg"); images.add("https://ss2.bdstatic.com/70cFvnSh_Q1YnxGkpoWK1HF6hhy/it/u=500808421,1575925585&fm=200&gp=0.jpg"); images.add("https://ss2.bdstatic.com/70cFvnSh_Q1YnxGkpoWK1HF6hhy/it/u=2557022909,3736713361&fm=27&gp=0.jpg"); images.add("https://ss1.bdstatic.com/70cFvXSh_Q1YnxGkpoWK1HF6hhy/it/u=2869678659,1275266194&fm=27&gp=0.jpg"); images.add("https://ss2.bdstatic.com/70cFvnSh_Q1YnxGkpoWK1HF6hhy/it/u=3655969545,3662282967&fm=27&gp=0.jpg"); images.add("https://ss2.bdstatic.com/70cFvnSh_Q1YnxGkpoWK1HF6hhy/it/u=2001847261,1610044111&fm=11&gp=0.jpg"); images.add("https://ss3.bdstatic.com/70cFv8Sh_Q1YnxGkpoWK1HF6hhy/it/u=3110094567,1509314476&fm=27&gp=0.jpg"); images.add("https://ss0.bdstatic.com/70cFvHSh_Q1YnxGkpoWK1HF6hhy/it/u=2770615963,1371439151&fm=27&gp=0.jpg"); images.add("https://ss3.bdstatic.com/70cFv8Sh_Q1YnxGkpoWK1HF6hhy/it/u=2552919264,3016693621&fm=27&gp=0.jpg"); images.add("https://ss0.bdstatic.com/70cFvHSh_Q1YnxGkpoWK1HF6hhy/it/u=1230799154,4259669654&fm=27&gp=0.jpg"); images.add("https://ss2.bdstatic.com/70cFvnSh_Q1YnxGkpoWK1HF6hhy/it/u=500808421,1575925585&fm=200&gp=0.jpg"); images.add("https://ss2.bdstatic.com/70cFvnSh_Q1YnxGkpoWK1HF6hhy/it/u=2557022909,3736713361&fm=27&gp=0.jpg"); images.add("https://ss1.bdstatic.com/70cFvXSh_Q1YnxGkpoWK1HF6hhy/it/u=2869678659,1275266194&fm=27&gp=0.jpg"); images.add("https://ss2.bdstatic.com/70cFvnSh_Q1YnxGkpoWK1HF6hhy/it/u=3655969545,3662282967&fm=27&gp=0.jpg"); images.add("https://ss2.bdstatic.com/70cFvnSh_Q1YnxGkpoWK1HF6hhy/it/u=2001847261,1610044111&fm=11&gp=0.jpg"); images.add("https://ss3.bdstatic.com/70cFv8Sh_Q1YnxGkpoWK1HF6hhy/it/u=3110094567,1509314476&fm=27&gp=0.jpg"); images.add("https://ss0.bdstatic.com/70cFvHSh_Q1YnxGkpoWK1HF6hhy/it/u=2770615963,1371439151&fm=27&gp=0.jpg"); images.add("https://ss3.bdstatic.com/70cFv8Sh_Q1YnxGkpoWK1HF6hhy/it/u=2552919264,3016693621&fm=27&gp=0.jpg"); images.add("https://ss0.bdstatic.com/70cFvHSh_Q1YnxGkpoWK1HF6hhy/it/u=1230799154,4259669654&fm=27&gp=0.jpg"); images.add("https://ss2.bdstatic.com/70cFvnSh_Q1YnxGkpoWK1HF6hhy/it/u=500808421,1575925585&fm=200&gp=0.jpg"); images.add("https://ss2.bdstatic.com/70cFvnSh_Q1YnxGkpoWK1HF6hhy/it/u=2557022909,3736713361&fm=27&gp=0.jpg"); images.add("https://ss1.bdstatic.com/70cFvXSh_Q1YnxGkpoWK1HF6hhy/it/u=2869678659,1275266194&fm=27&gp=0.jpg"); images.add("https://ss2.bdstatic.com/70cFvnSh_Q1YnxGkpoWK1HF6hhy/it/u=3655969545,3662282967&fm=27&gp=0.jpg"); images.add("https://ss2.bdstatic.com/70cFvnSh_Q1YnxGkpoWK1HF6hhy/it/u=2001847261,1610044111&fm=11&gp=0.jpg"); images.add("https://ss3.bdstatic.com/70cFv8Sh_Q1YnxGkpoWK1HF6hhy/it/u=3110094567,1509314476&fm=27&gp=0.jpg"); images.add("https://ss0.bdstatic.com/70cFvHSh_Q1YnxGkpoWK1HF6hhy/it/u=2770615963,1371439151&fm=27&gp=0.jpg"); images.add("https://ss3.bdstatic.com/70cFv8Sh_Q1YnxGkpoWK1HF6hhy/it/u=2552919264,3016693621&fm=27&gp=0.jpg"); images.add("https://ss0.bdstatic.com/70cFvHSh_Q1YnxGkpoWK1HF6hhy/it/u=1230799154,4259669654&fm=27&gp=0.jpg"); images.add("https://ss2.bdstatic.com/70cFvnSh_Q1YnxGkpoWK1HF6hhy/it/u=500808421,1575925585&fm=200&gp=0.jpg"); images.add("https://ss2.bdstatic.com/70cFvnSh_Q1YnxGkpoWK1HF6hhy/it/u=2557022909,3736713361&fm=27&gp=0.jpg"); images.add("https://ss1.bdstatic.com/70cFvXSh_Q1YnxGkpoWK1HF6hhy/it/u=2869678659,1275266194&fm=27&gp=0.jpg"); images.add("https://ss2.bdstatic.com/70cFvnSh_Q1YnxGkpoWK1HF6hhy/it/u=3655969545,3662282967&fm=27&gp=0.jpg"); images.add("https://ss2.bdstatic.com/70cFvnSh_Q1YnxGkpoWK1HF6hhy/it/u=2001847261,1610044111&fm=11&gp=0.jpg"); images.add("https://ss3.bdstatic.com/70cFv8Sh_Q1YnxGkpoWK1HF6hhy/it/u=3110094567,1509314476&fm=27&gp=0.jpg"); images.add("https://ss0.bdstatic.com/70cFvHSh_Q1YnxGkpoWK1HF6hhy/it/u=2770615963,1371439151&fm=27&gp=0.jpg"); images.add("https://ss3.bdstatic.com/70cFv8Sh_Q1YnxGkpoWK1HF6hhy/it/u=2552919264,3016693621&fm=27&gp=0.jpg"); } class ThisAdapter extends RecyclerView.Adapter<ThisAdapter.ItemViewHolder>{ @Override public ItemViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { // TextView itemView = new TextView(BlurActivity.this); // itemView.setLayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,250)); // itemView.setText("Hello World!"); // itemView.setTextColor(Color.BLACK); // itemView.setGravity(Gravity.CENTER); // itemView.setTextColor(Color.WHITE); ImageView imageView = new ImageView(BlurActivity.this); imageView.setScaleType(ImageView.ScaleType.FIT_XY); imageView.setLayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, 450)); return new ItemViewHolder(imageView); } @Override public void onBindViewHolder(ItemViewHolder holder, int position) { // if(position % 2 == 0){ // holder.getItemView().setBackgroundColor(Color.parseColor("#EA6F5A")); // }else{ // holder.getItemView().setBackgroundColor(Color.parseColor("#3385FF")); // } Glide.with(BlurActivity.this).load(images.get(position)).into((ImageView) holder.getItemView()); } @Override