Android的JPG动画 [英] Android jpg animation

问题描述

我想从一个网站下载10 JPG图片。

I would like to download 10 JPG pictures from a site.

在这里每隔一段时间拍摄的照片>>这是没有问题的。

The pictures where taken at intervals >> that is no problem

1. 如何保存图片在图片的数组。


2. 我将如何显示它们作为动画（动画等）。


3. 要在Android（ImageView的，动画师）用什么成分？


4. 我将如何动画组成部分？

任何具体的例子是大大AP preciated。

Any specific examples would be greatly appreciated.

推荐答案

我有这样一个例子，我在这里下载三张图片形式的网站，然后在其存储路径到/ mnt / SD卡/ ..。如果你想在动画显示这个话，我觉得你可以用鳍，然后动态添加此图像，并使用一个异步任务，你可以下一个翻转图像。

I have an example of this, here I am downloading three images form site and then store in it path "/mnt/sdcard/..". If you want to show this in animation then I think that you can use flipper and then add this image dynamically and using an async task you can flip image next.

import java.io.BufferedInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.URL;
import java.net.URLConnection;
import android.app.Activity;
import android.app.ProgressDialog;
import android.os.AsyncTask;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;

public class TestActivity extends Activity {
    /** Called when the activity is first created. */
    Button btn;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        btn=(Button)findViewById(R.id.startBtn);
        final String url1 = "http://farm1.static.flickr.com/114/298125983_0e4bf66782_b.jpg";
        final String url2 = "http://farm1.static.flickr.com/114/298125983_0e4bf66782_b.jpg";
        final String url3 = "http://farm1.static.flickr.com/114/298125983_0e4bf66782_b.jpg";
        btn.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                new AsyncDownload().execute(url1,url2,url3);
            }
        });
    }

    //------------------------------Class AsyncDownload----------------------------------

    public class AsyncDownload extends AsyncTask<String, String, String>
    {
        ProgressDialog dialog;

        @Override
        protected void onPostExecute(String result) {
            // TODO Auto-generated method stub
            super.onPostExecute(result);    
            dialog.dismiss();
            Toast.makeText(TestActivity.this,"Downloading complate successfully",2).show();
        }

        @Override
        protected void onPreExecute() {
            // TODO Auto-generated method stub
            super.onPreExecute();
            dialog=new ProgressDialog(TestActivity.this);
            dialog.setMessage("Downloading file..");
            dialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
            dialog.setMax(100);
            dialog.show();
        }

        @Override
        protected void onProgressUpdate(String... values) {
            // TODO Auto-generated method stub
            super.onProgressUpdate(values);
            dialog.setProgress(Integer.parseInt(values[0]));
        }

        @Override
        protected String doInBackground(String... aurl) {
            int count;
            int lenghtOfFile=0;
            long total = 0;
            try {
                for(int i=0;i<aurl.length;i++)
                {
                    URL url = new URL(aurl[i]);
                    URLConnection conexion = url.openConnection();
                    conexion.connect();
                    lenghtOfFile =lenghtOfFile+conexion.getContentLength();
                }
                for(int i=0;i<aurl.length;i++)
                {
                    URL url = new URL(aurl[i]);
                    URLConnection conexion = url.openConnection();
                    conexion.connect();
                    InputStream input = new BufferedInputStream(url.openStream());
                    OutputStream output = new FileOutputStream("/mnt/sdcard/img"+i+".jpg");

                    byte data[] = new byte[1024];               

                    while ((count = input.read(data)) != -1) {
                        total += count;
                        publishProgress(""+(int)((total*100)/lenghtOfFile));
                        output.write(data, 0, count);
                    }

                    output.flush();
                    output.close();
                    input.close();
                }
            } catch (Exception e) {
                e.getMessage();

            }
            return null;
        }

    }

}

这篇关于Android的JPG动画的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！