Android GridView实现动画效果实现代码

 Android GridView实现动画效果

项目中用到的一些动画，GridView的Item依次从屏幕外飞入到相应位置，附上相关代码：

MainActivity.Java

package com.mundane.gridanimationdemo; 
 
import android.os.Bundle; 
import android.support.v7.app.AppCompatActivity; 
import android.view.View; 
import android.view.animation.Animation; 
import android.view.animation.TranslateAnimation; 
import android.widget.Button; 
import android.widget.GridView; 
 
import java.util.ArrayList; 
import java.util.List; 
 
public class MainActivity extends AppCompatActivity { 
 
  private GridView mGridView; 
  private List mList; 
  private GridAdapter mGridAdapter; 
  private Button mBtnRefresh; 
 
  @Override 
  protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_main); 
    mGridView = (GridView) findViewById(R.id.grid_view); 
    mBtnRefresh = (Button) findViewById(R.id.btn_refresh); 
    mBtnRefresh.setonClickListener(new View.onClickListener() { 
      @Override 
      public void onClick(View v) { 
 mBtnRefresh.setVisibility(View.INVISIBLE); 
 mGridAdapter.notifyDataSetChanged(); 
      } 
    }); 
    mList = new ArrayList<>(); 
    for (int i = 0; i < 9; i++) { 
      mList.add(i + ""); 
    } 
    mGridAdapter = new GridAdapter(mList); 
    final TranslateAnimation animation = new TranslateAnimation( 
 Animation.RELATIVE_TO_PARENT, 
 1.0f, 
 Animation.RELATIVE_TO_PARENT, 
 0, 
 Animation.RELATIVE_TO_SELF, 
 0, 
 Animation.RELATIVE_TO_SELF, 
 0); 
    animation.setDuration(200); 
    animation.setAnimationListener(new Animation.AnimationListener() { 
      @Override 
      public void onAnimationStart(Animation animation) { 
 mBtnRefresh.setVisibility(View.VISIBLE); 
      } 
 
      @Override 
      public void onAnimationEnd(Animation animation) { 
 
      } 
 
      @Override 
      public void onAnimationRepeat(Animation animation) { 
 
      } 
    }); 
    mGridAdapter.setonLastItemAnimationEndListener(new GridAdapter.onLastItemAnimationEndListener() { 
      @Override 
      public void onAnimationEnd() { 
 mBtnRefresh.startAnimation(animation); 
      } 
    }); 
    mGridView.setAdapter(mGridAdapter); 
 
  } 
} 

GridAdapter.java

package com.mundane.gridanimationdemo; 
 
import android.view.LayoutInflater; 
import android.view.View; 
import android.view.ViewGroup; 
import android.view.animation.Animation; 
import android.view.animation.TranslateAnimation; 
import android.widget.baseAdapter; 
import android.widget.TextView; 
 
import java.util.List; 
 
 
 
public class GridAdapter extends baseAdapter{ 
  private List mList; 
 
  public GridAdapter(List list) { 
    mList = list; 
  } 
 
  @Override 
  public int getCount() { 
    return mList.size(); 
  } 
 
  @Override 
  public Object getItem(int position) { 
    return mList.get(position); 
  } 
 
  @Override 
  public long getItemId(int position) { 
    return position; 
  } 
 
  @Override 
  public View getView(final int position, View convertView, ViewGroup parent) { 
    String text = mList.get(position); 
    ViewHolder holder; 
    if (convertView == null) { 
      convertView = LayoutInflater.from(parent.getContext()).inflate(R.layout.card_desk_grid_item, parent, false); 
      holder = new ViewHolder(convertView); 
      convertView.setTag(holder); 
    } else { 
      holder = (ViewHolder) convertView.getTag(); 
    } 
    convertView.setVisibility(View.INVISIBLE); 
    holder.textView.setText(text); 
    int count = 3 - position % 3; 
    final TranslateAnimation translateAnimation = new TranslateAnimation( 
 Animation.RELATIVE_TO_SELF, 
 count, 
 Animation.RELATIVE_TO_SELF, 
 0, 
 Animation.RELATIVE_TO_SELF, 
 0, 
 Animation.RELATIVE_TO_SELF, 
 0); 
    translateAnimation.setDuration(count* 100); 
//   final Animation animation = AnimationUtils.loadAnimation(parent.getContext(), R.anim.slide_in_right); 
    final View finalConvertView = convertView; 
    convertView.postDelayed(new Runnable() { 
      @Override 
      public void run() { 
 finalConvertView.startAnimation(translateAnimation); 
      } 
    }, position * 200); 
    translateAnimation.setAnimationListener(new Animation.AnimationListener() { 
      @Override 
      public void onAnimationStart(Animation animation) { 
 finalConvertView.setVisibility(View.VISIBLE); 
      } 
 
      @Override 
      public void onAnimationEnd(Animation animation) { 
 if (position == mList.size() - 1) { 
   if (mListener != null) { 
     mListener.onAnimationEnd(); 
   } 
 } 
      } 
 
      @Override 
      public void onAnimationRepeat(Animation animation) { 
 
      } 
    }); 
 
    return convertView; 
  } 
 
  static class ViewHolder { 
    TextView textView; 
     
    public ViewHolder(View view) { 
      textView = (TextView) view.findViewById(R.id.tv); 
    } 
  } 
 
  public interface onLastItemAnimationEndListener { 
    void onAnimationEnd(); 
  } 
 
  private onLastItemAnimationEndListener mListener; 
 
  public void setonLastItemAnimationEndListener(onLastItemAnimationEndListener listener) { 
    mListener = listener; 
  } 
} 

参上上面的代码，还可以实现GridView Item的其他动画效果，注意//注释的部分，这个就是另外的动画效果，这里就不作过多的描述。

activity_main.xml

card_desk_grid_item.xml

效果如下：

模拟器上运行很卡，真机上是很流畅的。

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