Android创建和配置布局动画

demo1：为布局添加动画效果

运行效果：

View布局：

Control层代码：

public class MainActivity extends AppCompatActivity {

    private ConstraintLayout constraint;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        constraint=findViewById(R.id.constraint);
        ScaleAnimation scale=new ScaleAnimation(0,1,0,1);//定义一个缩放动画
        scale.setDuration(5000);
        //LayoutAnimationController:可以控制一组控件按照规定显示,用于一个布局或者ViewGroup的动画控制器，
        // 它能够让每个子View在不同的时间点分别执行相同的动画
        LayoutAnimationController controller=new LayoutAnimationController(scale,0.5f);//item动画延时，控件出来一半时下一个出
        controller.setOrder(LayoutAnimationController.ORDER_NORMAL);//控件出来的顺序
        constraint.setLayoutAnimation(controller);//部署到布局中
    }
}

 

demo2：布局内容改变动画

运行效果：

View布局：

Control层代码：

public class LayoutChangeAnimation extends AppCompatActivity {

    private LinearLayout linearLayout;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_layout_change_animation);
        linearLayout=findViewById(R.id.linear);
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.main,menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        if (item.getItemId()==R.id.action_add){
            Button add_button=new Button(this);
            add_button.setText("remove me");
            add_button.setTextSize(24);
            linearLayout.addView(add_button);//布局中添加button
            add_button.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    linearLayout.removeView(v);//移除button
                }
            });  
        }
        return super.onOptionsItemSelected(item);
    }
}

 

demo3：为列表添加布局动画效果

运行效果：

View布局：

资源配置文件anim:

   item动画scale.xml：

  主布局动画list_view_anim.xml:

Control层代码：

public class ListViewLayoutAnimation extends ListActivity{
    //ListActivity类中集成了一个ListView控件。
    //通过继承ListActivity类可方便地使用ListView控件

    private ArrayAdapter arrayAdapter;
    //private ScaleAnimation scaleAnimation;
    //private LayoutAnimationController controller;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        String[] strings=new String[]{"小明","小红","小兰","小绿","小明","小红","小兰","小绿","小明",
                "小红","小兰","小绿","小明","小红","小兰","小绿","小明","小红","小兰","小绿","小明",
                "小红","小兰","小绿","小明","小红","小兰","小绿","小明","小红","小兰","小绿"};
        //添加子布局和数据
        arrayAdapter=new ArrayAdapter<>(this,android.R.layout.simple_list_item_1,strings);
        setListAdapter(arrayAdapter);//部署适配器

        //第一种方法：Java代码
//        scaleAnimation=new ScaleAnimation(0,1,0,1);
//        scaleAnimation.setDuration(1000);
//        controller=new LayoutAnimationController(scaleAnimation,0.5f);
//
//        getListView().setLayoutAnimation(controller);//getListView():获取ListActivity自带的ListView对象

        //第二种方法：布局文件的配置
        setContentView(R.layout.activity_listview_layout_animation);
    }
}