Android 毛玻璃效果弹出菜单动画

刺骨的言语ヽ痛彻心扉 2022-08-18 14:27 250阅读 0赞

仿ios上屏幕下方向上滑出来的一个模糊菜单，效果如下

![Center][]![Center 1][]![Center 2][]

原理很简单，页面上原来有一个gone的framelayout，调用方法让它弹出的时候加了一个位移动画，让它从底部出来，出来的时候给这个framelayout里的一个imageView设置一个模糊后的截屏图片，并且这个图片也加一个相同时间的反方向位移动画，这个demo里用到的Blur模糊类和自定义imageView可以去我前两篇博客上找到.

这里面用的控件的大小等全部是动态计算的，不必担心屏幕适配的问题

activity的布局如下

activity如下

package com.npi.blureffect;
    
    import java.util.TimerTask;
    
    
    import android.app.Activity;
    import android.graphics.Bitmap;
    import android.os.Bundle;
    import android.view.View;
    import android.view.View.OnClickListener;
    import android.view.animation.Animation;
    import android.view.animation.Animation.AnimationListener;
    import android.view.animation.TranslateAnimation;
    import android.widget.Button;
    import android.widget.FrameLayout;
    import android.widget.ImageView;
    import android.widget.PopupWindow;
    import android.widget.RelativeLayout;
    import android.widget.TextView;
    
    public class DialogActivity extends Activity {
    TextView textView1;
    RelativeLayout window;
    ImageView background;
    FrameLayout bottomMenu;
    Button button2;
    Button button1;
    ScrollableImageView bottomBack;
    	@Override
    	protected void onCreate(Bundle savedInstanceState) {
    		super.onCreate(savedInstanceState);
    		setContentView(R.layout.activity_dialog);
    		textView1 = (TextView) findViewById(R.id.textView1);
    		window = (RelativeLayout)findViewById(R.id.window);
    		background = (ImageView) findViewById(R.id.background);
    		bottomMenu = (FrameLayout) findViewById(R.id.bottom_menu);
    		button2 = (Button) findViewById(R.id.button2);
    		bottomBack = (ScrollableImageView) findViewById(R.id.bottom_back);
    		button1 = (Button) findViewById(R.id.button1);
    		button2.setOnClickListener(new OnClickListener() {
    			
    			@Override
    			public void onClick(View v) {
    				// TODO Auto-generated method stub
    				showBottomMenu(window,500);
    			}
    		});
    		button1.setOnClickListener(new OnClickListener() {
    			
    			@Override
    			public void onClick(View v) {
    				// TODO Auto-generated method stub
    				hideBottomMenu(window, 500);
    			}
    		});
    	}
    
    
    	
    	
      
       public void showBottomMenu(View layout,final int duration){
    	 //对当前页面进行截屏
    	 		layout.setDrawingCacheEnabled(true);  
    	 		layout.buildDrawingCache();  //启用DrawingCache并创建位图  
    	 		Bitmap screen = Bitmap.createBitmap(layout.getDrawingCache()); //创建一个DrawingCache的拷贝，因为DrawingCache得到的位图在禁用后会被回收  
    	 		layout.setDrawingCacheEnabled(false);  //禁用DrawingCahce否则会影响性能  
    	     	
    	 		//将截屏进行模糊
    	 		screen = Blur.fastblur(this, screen, 10);
    	 		bottomBack.setoriginalImage(screen);
    	 		
    	 		
    	   bottomMenu.setAlpha(0);//在动画开启之后再可见，否则会有残影
    	   bottomMenu.setVisibility(View.VISIBLE);
    	   bottomMenu.post(new Runnable() {
    		
    		@Override
    		public void run() {
    			// TODO Auto-generated method stub
    			Animation animation = new TranslateAnimation(0, 0, bottomMenu.getHeight(), 0);//这里弹出框的高度的dp需要事先写死
    			bottomBack.handleScroll(bottomBack.getOriginalImage().getHeight()-bottomMenu.getHeight(), 0);
    			Animation backgroundAnimation = new TranslateAnimation(0,0,-bottomBack.getHeight(),0);
    			backgroundAnimation.setDuration(duration);
    			bottomBack.startAnimation(backgroundAnimation);
    			animation.setAnimationListener(new AnimationListener() {
    				
    				@Override
    				public void onAnimationStart(Animation animation) {
    					// TODO Auto-generated method stub
    					bottomMenu.setAlpha(255);
    				}
    				
    				@Override
    				public void onAnimationRepeat(Animation animation) {
    					// TODO Auto-generated method stub
    					
    				}
    				
    				@Override
    				public void onAnimationEnd(Animation animation) {
    					// TODO Auto-generated method stub
    					
    				}
    			});
    			animation.setDuration(duration);
    			bottomMenu.startAnimation(animation);
    		}
    	});
       }
       
       
       public void hideBottomMenu(View layout,final int duration){
    		 //对当前页面进行截屏
    		 		layout.setDrawingCacheEnabled(true);  
    		 		layout.buildDrawingCache();  //启用DrawingCache并创建位图  
    		 		Bitmap screen = Bitmap.createBitmap(layout.getDrawingCache()); //创建一个DrawingCache的拷贝，因为DrawingCache得到的位图在禁用后会被回收  
    		 		layout.setDrawingCacheEnabled(false);  //禁用DrawingCahce否则会影响性能  
    		     	
    		 		//将截屏进行模糊
    		 		screen = Blur.fastblur(this, screen, 10);
    		 		bottomBack.setoriginalImage(screen);
    		 		
    		 		
    		   
    		   bottomMenu.post(new Runnable() {
    			
    			@Override
    			public void run() {
    				// TODO Auto-generated method stub
    				Animation animation = new TranslateAnimation(0, 0, 0, +bottomMenu.getHeight());//这里弹出框的高度的dp需要事先写死
    				bottomBack.handleScroll(bottomBack.getOriginalImage().getHeight()-bottomMenu.getHeight(), 0);
    				Animation backgroundAnimation = new TranslateAnimation(0,0,0,-bottomBack.getHeight());
    				backgroundAnimation.setDuration(duration);
    				bottomBack.startAnimation(backgroundAnimation);
    				animation.setAnimationListener(new AnimationListener() {
    					
    					@Override
    					public void onAnimationStart(Animation animation) {
    						// TODO Auto-generated method stub
    						bottomMenu.setAlpha(255);
    					}
    					
    					@Override
    					public void onAnimationRepeat(Animation animation) {
    						// TODO Auto-generated method stub
    						
    					}
    					
    					@Override
    					public void onAnimationEnd(Animation animation) {
    						// TODO Auto-generated method stub
    						bottomMenu.setVisibility(View.GONE);
    					}
    				});
    				animation.setDuration(duration);
    				bottomMenu.startAnimation(animation);
    			}
    		});
    	   }
       
    }

[Center]: https://img-blog.csdn.net/20151224175714053?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQv/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center
[Center 1]: https://img-blog.csdn.net/20151224180745855?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQv/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center
[Center 2]: /images/20220731/1054fe35fb864fac85b6f5d3630d16bc.png