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Android特效专辑(七)——飞机升空特效,一键清理缓存,灵活运用动画会有不一样的感受

时间:2016-01-21 13:54:26      阅读:256      评论:0      收藏:0      [点我收藏+]

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Android特效专辑(七)——飞机升空特效,一键清理缓存,灵活运用属性动画


最近的几篇博文反响还不错,也会继续的写下去的,关于这些特效的专辑,大多数也是借鉴大神的,最近由于工作的关系,会深入的了解一下Android BLE与硬件设备的串口通讯相关的内容,也会时不时的分享出来,当然,大家是一起学习,我毕竟也是初学者,今天讲的是小火箭的动画效果,用到了属性动画做了一些偷梁换柱的事情,明天还是后天,再更新一个心型起泡飞舞的特效,就不会这么持续的更新特效专辑这一系列了,毕竟《Only》这个软件也正在开发当中,最重要的还是交互,不是特效,特效多了反而会鸡肋,并且机型适配方面可能导致一些不确定的因素也是有的,所以,这几天可能会多分享一些蓝牙相关的东西了,当然,会持续的更新Android实用案例这个系列,很多的Android技术等你一起来玩。
我们先来看看今天的效果图吧:

截图

技术分享

感觉是不是挺好玩的?其实,我其实就是用了三张图片,用黑色背景我们看看这三张图片

技术分享


技术分享


技术分享

好的,知道了这三张图片,我们在res文件下新建一个anim文件夹,然后把他们三个的动画加上

cloud.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android" >

    <alpha
        android:duration="800"
        android:fromAlpha="0"
        android:startOffset="300"
        android:toAlpha="1.0" >
    </alpha>

    <translate
        android:duration="800"
        android:fromYDelta="100%"
        android:interpolator="@android:anim/accelerate_interpolator"
        android:startOffset="300"
        android:toYDelta="0%" />

    <alpha
        android:duration="500"
        android:fromAlpha="1.0"
        android:startOffset="2050"
        android:toAlpha="0" >
    </alpha>

    <translate
        android:duration="650"
        android:fromYDelta="0%"
        android:startOffset="2050"
        android:toYDelta="100%" />

</set>

launcher.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android" >

    <translate
        android:duration="200"
        android:fromYDelta="100%"
        android:startOffset="2050"
        android:toYDelta="0%" />

    <alpha
        android:duration="450"
        android:fromAlpha="1.0"
        android:startOffset="2250"
        android:toAlpha="0" >
    </alpha>

</set>

rocket.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android" >

    <translate
        android:duration="500"
        android:fromYDelta="100%"
        android:toYDelta="-5%p" />
    <translate
        android:duration="500"
        android:fromYDelta="0%p"
        android:startOffset="500"
        android:toYDelta="4%p" />
    <translate
        android:duration="500"
        android:fromYDelta="0%p"
        android:startOffset="1000"
        android:toYDelta="-1.5%p" />
    <translate
        android:duration="300"
        android:fromYDelta="0%p"
        android:startOffset="1750"
        android:toYDelta="8%p" />
    <translate
        android:duration="400"
        android:fromYDelta="0%p"
        android:interpolator="@android:anim/accelerate_interpolator"
        android:startOffset="2050"
        android:toYDelta="-108%p" />

</set>

activity_main.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/root"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@android:color/black" >

    <ImageView
        android:id="@+id/cloud"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:background="@drawable/cloud"
        android:visibility="invisible" />

    <ImageView
        android:id="@+id/launcher"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_centerHorizontal="true"
        android:src="@drawable/launcher"
        android:visibility="invisible" />

    <ImageView
        android:id="@+id/rocket"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_centerHorizontal="true"
        android:paddingLeft="8dp"
        android:src="@drawable/rocket"
        android:visibility="invisible" />

    <Button
        android:id="@+id/getup"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_centerHorizontal="true"
        android:text="启动火箭"
        android:textColor="#ffffff"
        android:textSize="20dp" />

</RelativeLayout>
三个动画,然后就是布局,一个按钮启动,然后三张图片显示出来并且出来一个动画,是不是思路越来越清晰了?

MainActivity

package com.lgl.recht;

import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.animation.Animation;
import android.view.animation.Animation.AnimationListener;
import android.view.animation.AnimationUtils;
import android.widget.Button;

public class MainActivity extends Activity implements OnClickListener {

    private Handler mHandler = new Handler();
    private Button btn;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        btn = (Button) findViewById(R.id.getup);
        btn.setOnClickListener(this);
    }

    private void launcherTheRocket() {
        mHandler.postDelayed(new Runnable() {

            @Override
            public void run() {
                final View rocket = findViewById(R.id.rocket);
                //初始化
                Animation rocketAnimation = AnimationUtils.loadAnimation(
                        getApplicationContext(), R.anim.rocket);
                //设置动画监听
                rocketAnimation
                        .setAnimationListener(new VisibilityAnimationListener(
                                rocket));
                //开启
                rocket.startAnimation(rocketAnimation);

                final View cloud = findViewById(R.id.cloud);
                Animation cloudAnimation = AnimationUtils.loadAnimation(
                        getApplicationContext(), R.anim.cloud);
                cloudAnimation
                        .setAnimationListener(new VisibilityAnimationListener(
                                cloud));
                cloud.startAnimation(cloudAnimation);

                final View launcher = findViewById(R.id.launcher);
                Animation launcherAnimation = AnimationUtils.loadAnimation(
                        getApplicationContext(), R.anim.launcher);
                launcherAnimation
                        .setAnimationListener(new VisibilityAnimationListener(
                                launcher));
                launcher.startAnimation(launcherAnimation);

            }
        }, 150);

    }

    public class VisibilityAnimationListener implements AnimationListener {

        private View mVisibilityView;

        public VisibilityAnimationListener(View view) {
            mVisibilityView = view;
        }

        public void setVisibilityView(View view) {
            mVisibilityView = view;
        }

        //动画开始
        @Override
        public void onAnimationStart(Animation animation) {
             Log.i("START", "...");
            if (mVisibilityView != null) {
                mVisibilityView.setVisibility(View.VISIBLE);
                // mVisibilityView.setVisibility(View.GONE);
            }

        }

        //动画结束
        @Override
        public void onAnimationEnd(Animation animation) {
             Log.i("END", "...");
            if (mVisibilityView != null) {
                mVisibilityView.setVisibility(View.GONE);
            }
        }

        @Override
        public void onAnimationRepeat(Animation animation) {
        }
    }

    @Override
    public void onClick(View v) {
        //启动
        launcherTheRocket();
    }
}
好的,我们可以来运行一下了

技术分享

这里我们并没有添加清理缓存的功能,我们在下面实现,这里提供一个工具类

DataCleanManager

package com.lgl.data;

import java.io.File;
import java.math.BigDecimal;

import android.content.Context;
import android.os.Environment;

/** * 本应用数据清除管理器 */
public class DataCleanManager {

    public static String getTotalCacheSize(Context context) throws Exception {
        long cacheSize = getFolderSize(context.getCacheDir());
        if (Environment.getExternalStorageState().equals(
                Environment.MEDIA_MOUNTED)) {
            cacheSize += getFolderSize(context.getExternalCacheDir());
        }
        return getFormatSize(cacheSize);
    }

    public static void clearAllCache(Context context) {
        deleteDir(context.getCacheDir());
        if (Environment.getExternalStorageState().equals(
                Environment.MEDIA_MOUNTED)) {
            deleteDir(context.getExternalCacheDir());
        }
    }

    private static boolean deleteDir(File dir) {
        if (dir != null && dir.isDirectory()) {
            String[] children = dir.list();
            for (int i = 0; i < children.length; i++) {
                boolean success = deleteDir(new File(dir, children[i]));
                if (!success) {
                    return false;
                }
            }
        }
        return dir.delete();
    }

    // 获取文件
    // Context.getExternalFilesDir() --> SDCard/Android/data/你的应用的包名/files/
    // 目录,一般放一些长时间保存的数据
    // Context.getExternalCacheDir() -->
    // SDCard/Android/data/你的应用包名/cache/目录,一般存放临时缓存数据
    public static long getFolderSize(File file) throws Exception {
        long size = 0;
        try {
            File[] fileList = file.listFiles();
            for (int i = 0; i < fileList.length; i++) {
                // 如果下面还有文件
                if (fileList[i].isDirectory()) {
                    size = size + getFolderSize(fileList[i]);
                } else {
                    size = size + fileList[i].length();
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return size;
    }

    /**
     * 格式化单位
     * 
     * @param size
     */
    public static String getFormatSize(double size) {
        double kiloByte = size / 1024;
        if (kiloByte < 1) {
            return size + "Byte";
        }

        double megaByte = kiloByte / 1024;
        if (megaByte < 1) {
            BigDecimal result1 = new BigDecimal(Double.toString(kiloByte));
            return result1.setScale(2, BigDecimal.ROUND_HALF_UP)
                    .toPlainString() + "KB";
        }

        double gigaByte = megaByte / 1024;
        if (gigaByte < 1) {
            BigDecimal result2 = new BigDecimal(Double.toString(megaByte));
            return result2.setScale(2, BigDecimal.ROUND_HALF_UP)
                    .toPlainString() + "MB";
        }

        double teraBytes = gigaByte / 1024;
        if (teraBytes < 1) {
            BigDecimal result3 = new BigDecimal(Double.toString(gigaByte));
            return result3.setScale(2, BigDecimal.ROUND_HALF_UP)
                    .toPlainString() + "GB";
        }
        BigDecimal result4 = new BigDecimal(teraBytes);
        return result4.setScale(2, BigDecimal.ROUND_HALF_UP).toPlainString()
                + "TB";
    }

}

使用方法

private DataCleanManager dm;

try {
    //缓存大小
    tv.setText(dm.getTotalCacheSize(this));
} catch (Exception e) {
    // TODO Auto-generated catch block
        e.printStackTrace();
        }

//清理缓存
dm.clearAllCache(MainActivity.this);

大伙觉得好的话,欢迎点个赞,嘿嘿!

Demo下载地址:http://download.csdn.net/detail/qq_26787115/9412013

Android特效专辑(七)——飞机升空特效,一键清理缓存,灵活运用动画会有不一样的感受

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原文地址:http://blog.csdn.net/qq_26787115/article/details/50549377

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