【Android】动态弹出组件（Layout）

package com.example.translateanimationmenu;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.animation.Animation;
import android.view.animation.ScaleAnimation;
import android.view.animation.TranslateAnimation;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;
import android.widget.Toast;

public class TranslateAnimationMenu extends Activity {
    /** Called when the activity is first created. */
    //TranslateAnimation showAction, hideAction;
    Animation showAction, hideAction;
    RelativeLayout menu;
    Button button;
    Button menuButton;
    boolean menuShowed;
    
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_translate_animation_menu);
        menu = (RelativeLayout) findViewById(R.id.menu);
        button = (Button) findViewById(R.id.button);
        menuButton = (Button) findViewById(R.id.menuButton);
        menuButton.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View arg0) {
                // TODO Auto-generated method stub
                Toast.makeText(TranslateAnimationMenu.this, "Success", Toast.LENGTH_SHORT).show();
            }
        });
    
//        // 这里是TranslateAnimation动画
//        showAction = new TranslateAnimation(
//                Animation.RELATIVE_TO_SELF, 0.0f, Animation.RELATIVE_TO_SELF, 0.0f,
//                Animation.RELATIVE_TO_SELF, -1.0f, Animation.RELATIVE_TO_SELF, 0.0f);
//         这里是ScaleAnimation动画
        showAction = new ScaleAnimation(
                1.0f, 1.0f, 0.0f, 1.0f, Animation.RELATIVE_TO_SELF, 0.0f, Animation.RELATIVE_TO_SELF, 0.0f);
        showAction.setDuration(500);
        // 这里是TranslateAnimation动画
        hideAction = new TranslateAnimation(
                Animation.RELATIVE_TO_SELF, 0.0f, Animation.RELATIVE_TO_SELF, 0.0f,
                Animation.RELATIVE_TO_SELF, 0.0f, Animation.RELATIVE_TO_SELF, -1.0f);
        // 这里是ScaleAnimation动画
        //hideAction = new ScaleAnimation(
        // 1.0f, 1.0f, 1.0f, 0.0f, Animation.RELATIVE_TO_SELF, 0.0f, Animation.RELATIVE_TO_SELF, 0.0f);
        hideAction.setDuration(500);
        menuShowed = false;
        menu.setVisibility(View.GONE);
    
        button.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                if (menuShowed) {
                    menuShowed = false;
                    menu.startAnimation(hideAction);
                    menu.setVisibility(View.GONE);
                }
                else {
                    menuShowed = true;
                    menu.startAnimation(showAction);
                    menu.setVisibility(View.VISIBLE);
                }
            }
        });
    }
}

下面是XML:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" 
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">

<TextView 
    android:layout_width="fill_parent"
    android:layout_height="wrap_content" 
    android:text="test" />

<RelativeLayout 
    android:id="@+id/menu"
    android:layout_height="100px" 
    android:layout_width="fill_parent"
    android:layout_alignParentTop="true" 
    android:background="#22ff0000">
    
<Button
    android:id="@+id/menuButton"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content" 
    android:text="Click Me!"
    android:background="#2200ff00"
    android:layout_centerHorizontal="true"
    android:gravity="center" />
</RelativeLayout>

<Button 
    android:id="@+id/button" 
    android:layout_width="fill_parent"
    android:layout_height="wrap_content" 
    android:layout_alignParentBottom="true"
    android:text="Click to show/hide menu" />
</RelativeLayout>

上面就可以实现组件的动态出现和动态隐藏