Activity之间切换的各种效果(遗憾没有3D的效果)

http://edison-cool911.iteye.com/blog/730320

下面的Demo是我找到的一个觉得用来在程序中进行Activity之间切换的很好的一个例子: 

package com.asai.android.demo;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.Spinner;

public class demoMain extends Activity {
    private Button btnDemo;
    private Spinner sprAnim;

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        btnDemo = (Button) findViewById(R.id.btnDemo);
        sprAnim = (Spinner) findViewById(R.id.sprAnim);
        //Spinner的内容适配器
ArrayAdapter<?> animType = ArrayAdapter.createFromResource(this,
                R.array.anim_type, android.R.layout.simple_spinner_item);
        animType.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        sprAnim.setAdapter(animType);
                //默认选中第一项
        sprAnim.setSelection(0);
        btnDemo.setOnClickListener(new View.OnClickListener() {
            public void onClick(View view) {
                startActivity(new Intent(demoMain.this, demoDetail.class));
                switch (sprAnim.getSelectedItemPosition()) {
                case 1:
                //淡入淡出效果

overridePendingTransition(R.anim.fade, R.anim.hold);
                    break;
                case 2:
                    overridePendingTransition(R.anim.alpha_rotate,
                            R.anim.my_alpha_action);
                    break;
                case 3:
                    overridePendingTransition(R.anim.alpha_scale_rotate,
                            R.anim.my_alpha_action);
                    break;
                case 4:
                    overridePendingTransition(
                            R.anim.alpha_scale_translate_rotate,
                            R.anim.my_alpha_action);
                    break;
                case 5:
                    overridePendingTransition(R.anim.alpha_scale_translate,
                            R.anim.my_alpha_action);
                    break;
                case 6:
                //中心放大效果

    overridePendingTransition(R.anim.alpha_scale,
                            R.anim.my_alpha_action);
                    break;
                case 7:
                    overridePendingTransition(R.anim.alpha_translate_rotate,
                            R.anim.my_alpha_action);
                    break;
                case 8:
                    overridePendingTransition(R.anim.alpha_translate,
                            R.anim.my_alpha_action);
                    break;
                case 9:
                    overridePendingTransition(R.anim.my_rotate_action,
                            R.anim.my_alpha_action);
                    break;
                case 10:
                    overridePendingTransition(R.anim.my_scale_action,
                            R.anim.my_alpha_action);
                    break;
                case 11:
                    overridePendingTransition(R.anim.my_translate_action,
                            R.anim.my_alpha_action);
                    break;
                case 12:
                    overridePendingTransition(R.anim.myanimation_simple,
                            R.anim.my_alpha_action);
                    break;
                case 13:
                    overridePendingTransition(R.anim.myown_design,
                            R.anim.my_alpha_action);
                    break;
                case 14:
                    overridePendingTransition(R.anim.scale_rotate,
                            R.anim.my_alpha_action);
                    break;
                case 15:
                    overridePendingTransition(R.anim.scale_translate_rotate,
                            R.anim.my_alpha_action);
                    break;
                case 16:
                    overridePendingTransition(R.anim.scale_translate,
                            R.anim.my_alpha_action);
                    break;
                case 17:
                    overridePendingTransition(R.anim.translate_rotate,
                            R.anim.my_alpha_action);
                    break;
                case 18:
                    overridePendingTransition(R.anim.hyperspace_in,
                            R.anim.hyperspace_out);
                    break;
                case 19:
                    overridePendingTransition(R.anim.shake,
                            R.anim.my_alpha_action);
                    break;
                case 20:
                    overridePendingTransition(R.anim.push_left_in,
                            R.anim.push_left_out);
                    break;
                case 21:
                //从下方移出效果   overridePendingTransition(R.anim.push_up_in,
                            R.anim.push_up_out);
                    break;
                case 22:
                    overridePendingTransition(R.anim.slide_left,
                            R.anim.slide_right);
                    break;
                case 23:
                    overridePendingTransition(R.anim.slide_top_to_bottom,
                            R.anim.my_alpha_action);
                    break;
                case 24:
                    overridePendingTransition(R.anim.wave_scale,
                            R.anim.my_alpha_action);
                    break;
                }
            }
        });
    }
}

另外一个activity可以自己随便写个,这里还用到了就是arrays.xml作为Spinner的适配器: 

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <string-array name="anim_type">
        <item>zoom_enter</item>
        <item>fade</item>
        <item>alpha_rotate</item>
        <item>alpha_scale_rotate</item>
        <item>alpha_scale_translate_rotate</item>
        <item>alpha_scale_translate</item>
        <item>alpha_scale</item>
        <item>alpha_translate_rotate</item>
        <item>alpha_translate</item>
        <item>my_rotate_action</item>
        <item>my_scale_action</item>
        <item>my_translate_action</item>
        <item>myanimation_simple</item>
        <item>myown_design</item>
        <item>scale_rotate</item>
        <item>scale_translate_rotate</item>
        <item>scale_translate</item>
        <item>translate_rotate</item>
        <item>hyperspace_in</item>
        <item>shake</item>
        <item>push_left_in</item>
        <item>push_up_in</item>
        <item>slide_left</item>
        <item>slide_top_to_bottom</item>
        <item>wave_scale</item>
    </string-array>
</resources>

其实这个Demo最重要的就是anim中的一些xml动画定义: 
下面我一个一个的来介绍下(我觉得实用性很好的): 
push_up_in.xml: 

<set xmlns:android="http://schemas.android.com/apk/res/android">
    <translate android:fromYDelta="100%p" android:toYDelta="0" android:duration="300"/>
    <alpha android:fromAlpha="0.0" android:toAlpha="1.0" android:duration="300" />
</set>

相信这段代码我不用解释应该也看的懂:改变y坐标来实现动画效果; 
相对应的就是: 
push_up_out.xml: 

<set xmlns:android="http://schemas.android.com/apk/res/android">
    <translate android:fromYDelta="0" android:toYDelta="-100%p" android:duration="300"/>
    <alpha android:fromAlpha="1.0" android:toAlpha="0.0" android:duration="300" />
</set>