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soft1614080902201/lab6/app/src/main/java/dl/soft1614080902201/NetworkActivity.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,170 +1,114 @@ | ||
| package dl.soft1614080902201; | ||
|
|
||
| import android.support.v7.app.AppCompatActivity; | ||
| import android.os.Bundle; | ||
| import java.io.File; | ||
| import java.io.FileOutputStream; | ||
| import java.io.InputStream; | ||
| import java.net.HttpURLConnection; | ||
| import java.net.URL; | ||
| import android.os.AsyncTask; | ||
| import android.os.Environment; | ||
| import android.os.Handler; | ||
| import android.os.Message; | ||
| import android.app.Activity; | ||
| import android.content.Context; | ||
| import android.graphics.Bitmap; | ||
| import android.graphics.Color; | ||
| import android.media.Image; | ||
| import android.net.ConnectivityManager; | ||
| import android.net.NetworkInfo; | ||
| import android.os.Bundle; | ||
| import android.util.Log; | ||
| import android.graphics.BitmapFactory; | ||
| import android.view.View; | ||
| import android.view.View.OnClickListener; | ||
| import android.widget.Button; | ||
| import android.widget.ImageView; | ||
| import android.widget.TextView; | ||
| import android.widget.Toast; | ||
| import java.net.URL; | ||
| import java.net.HttpURLConnection; | ||
| import java.io.*; | ||
| import android.graphics.*; | ||
| import android.os.Handler; | ||
| import android.os.Message; | ||
| import java.io.File; | ||
| import android.os.AsyncTask; | ||
| import android.os.Environment; | ||
|
|
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| import dl.soft1614080902201.R; | ||
| import dl.soft1614080902201.*; | ||
|
|
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| public class NetworkActivity extends Activity implements View.OnClickListener{ | ||
|
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| public static final String TAG = NetworkActivity.class.getSimpleName(); | ||
| public static final String WEB = "http://www.bing.com"; | ||
| public static final String IMAGE_URL_PREFIX = "https://raw.githubusercontent.com/hzuapps/android-labs/master/app/src/main/res/drawable/"; | ||
|
|
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| static String[] imageNames = {"image_bmp.png", "image_gif.png", "image_ico.png", | ||
| "image_jpeg.png", "image_png.png", "image_tiff.png"}; | ||
|
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| public class NetworkActivity extends AppCompatActivity implements OnClickListener{ | ||
|
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| private Button mDownloadImageButton; | ||
| private ImageView mImageshow; | ||
| private TextView mNetworkText; | ||
| private TextView mResultText; | ||
| Button download; | ||
| ImageView image; | ||
| Bitmap bitmap; | ||
|
|
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| private boolean mConnected; | ||
| private NetworkFileDownloader mFileDownloader; | ||
| private File mPrivateRootDir; | ||
| private File mImagesDir; | ||
|
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| @Override | ||
| protected void onCreate(Bundle savedInstanceState) { | ||
| super.onCreate(savedInstanceState); | ||
| setContentView(R.layout.activity_network); | ||
| download=(Button)findViewById(R.id.button_Download); | ||
| image=(ImageView)findViewById(R.id.image_show); | ||
|
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| mDownloadImageButton = (Button) findViewById(R.id.button_download_image); | ||
| mImageshow =(ImageView)findViewById(R.id.text_show); | ||
| mNetworkText = (TextView) findViewById(R.id.text_network); | ||
| mResultText = (TextView) findViewById(R.id.text_result); | ||
| mDownloadImageButton.setOnClickListener(this); | ||
| mPrivateRootDir = getFilesDir(); | ||
| mImagesDir = new File(mPrivateRootDir, "images"); | ||
| download.setOnClickListener(this);; | ||
| image.setOnClickListener(this);; | ||
| } | ||
| @Override | ||
| public void onClick(View view) { | ||
| if (view.getId() == R.id.button_download_image) { | ||
| downloadImages(); | ||
|
|
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| public Bitmap GetImageInputStream(String imageurl){ | ||
| URL url; | ||
| HttpURLConnection connection=null; | ||
| Bitmap bitmap=null; | ||
| try { | ||
| url = new URL(imageurl); | ||
| connection=(HttpURLConnection)url.openConnection(); | ||
| connection.setConnectTimeout(6000); | ||
| connection.setDoInput(true); | ||
| connection.setUseCaches(false); | ||
| InputStream inputStream=connection.getInputStream(); | ||
| bitmap=BitmapFactory.decodeStream(inputStream); | ||
| inputStream.close(); | ||
| } catch (Exception e) { | ||
| e.printStackTrace(); | ||
| } | ||
| return bitmap; | ||
| } | ||
|
|
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| private void downloadImages() { | ||
| // 创建下载器 | ||
| mFileDownloader = new NetworkFileDownloader(new NetworkFileDownloader.OnImageDownloadListener() { | ||
| @Override | ||
| public void onError(String error) { | ||
| Toast.makeText(NetworkActivity.this, error, Toast.LENGTH_LONG).show(); | ||
| } | ||
| public void onClick(View v) { | ||
| switch (v.getId()) { | ||
| case R.id.button_Download: | ||
|
|
||
| @Override | ||
| public void onProgressChange(int percent) { | ||
| Log.i(TAG, "当前进度 = " + percent); | ||
| } | ||
| new Task().execute("https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1528041114167&di=8d85340b9dfc1d48c449e291f9a6638f&imgtype=0&src=http%3A%2F%2Fimg.zcool.cn%2Fcommunity%2F0117e2571b8b246ac72538120dd8a4.jpg"); | ||
| break; | ||
|
|
||
| @Override | ||
| public void onComplete(Bitmap bitmap, String imageUrl) { | ||
| // 下载的图片格式为PNG | ||
| final Bitmap.CompressFormat format = Bitmap.CompressFormat.PNG; | ||
| // 解析出原始文件名 | ||
| String filename = imageUrl.replace(IMAGE_URL_PREFIX, ""); | ||
| final File imageFile = new File(mImagesDir, filename); | ||
| // 将文件保存到磁盘中 | ||
| NetworkFileDownloader.writeToDisk(imageFile, bitmap, new NetworkFileDownloader.OnBitmapSaveListener() { | ||
| @Override | ||
| public void onBitmapSaved() { | ||
| Toast.makeText(NetworkActivity.this, "文件已保存: " + imageFile.getAbsolutePath(), Toast.LENGTH_LONG).show(); | ||
| } | ||
| @Override | ||
| public void onBitmapSaveError(String error) { | ||
| Toast.makeText(NetworkActivity.this, error, Toast.LENGTH_LONG).show(); | ||
| } | ||
| }, format, false); | ||
| } | ||
| }); | ||
| case R.id.image_show: | ||
|
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||
| SavaImage(bitmap, Environment.getExternalStorageDirectory().getPath()+"/Test"); | ||
| Toast.makeText(getBaseContext(), "图片保存", Toast.LENGTH_SHORT).show(); | ||
| break; | ||
|
|
||
| // 下载所有文件 | ||
| for(String imageName :imageNames) { | ||
| String imageUrl = IMAGE_URL_PREFIX + imageName; | ||
| mFileDownloader.download(imageUrl, true); | ||
| default: | ||
| break; | ||
| } | ||
| } | ||
|
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||
| public Bitmap GetImageInputStream(String imageurl){ | ||
| URL url; | ||
| HttpURLConnection connection=null; | ||
| Bitmap bitmap=null; | ||
| try { | ||
| url = new URL(imageurl); | ||
| connection=(HttpURLConnection)url.openConnection(); | ||
| connection.setConnectTimeout(6000); | ||
| connection.setDoInput(true); | ||
| connection.setUseCaches(false); | ||
| InputStream inputStream=connection.getInputStream(); | ||
| bitmap=BitmapFactory.decodeStream(inputStream); | ||
| inputStream.close(); | ||
| } catch (Exception e) { | ||
| e.printStackTrace(); | ||
| } | ||
| return bitmap; | ||
| } | ||
|
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| Handler handler=new Handler(){ | ||
| public void handleMessage(android.os.Message msg) { | ||
| if(msg.what==0x123){ | ||
| mImageshow.setImageBitmap(bitmap); | ||
| } | ||
| }; | ||
| if(msg.what==0x123){ | ||
| image.setImageBitmap(bitmap); | ||
| } | ||
| }; | ||
| }; | ||
|
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|
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| class Task extends AsyncTask<String, Integer, Void>{ | ||
| class Task extends AsyncTask<String, Integer, Void>{ | ||
|
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| protected Void doInBackground(String... params) { | ||
| bitmap=GetImageInputStream((String)params[0]); | ||
| return null; | ||
| } | ||
| protected Void doInBackground(String... params) { | ||
| bitmap=GetImageInputStream((String)params[0]); | ||
| return null; | ||
| } | ||
|
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| protected void onPostExecute(Void result) { | ||
| super.onPostExecute(result); | ||
| Message message=new Message(); | ||
| message.what=0x123; | ||
| handler.sendMessage(message); | ||
| } | ||
| protected void onPostExecute(Void result) { | ||
| super.onPostExecute(result); | ||
| Message message=new Message(); | ||
| message.what=0x123; | ||
| handler.sendMessage(message); | ||
| } | ||
|
|
||
| } | ||
| } | ||
|
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| public void SavaImage(Bitmap bitmap, String path){ | ||
| File file=new File(path); | ||
| FileOutputStream fileOutputStream=null; | ||
| if(!file.exists()){ | ||
| file.mkdir(); | ||
| } | ||
| try { | ||
| fileOutputStream=new FileOutputStream(path+"/"+System.currentTimeMillis()+".png"); | ||
| bitmap.compress(Bitmap.CompressFormat.JPEG, 100,fileOutputStream); | ||
| fileOutputStream.close(); | ||
| } catch (Exception e) { | ||
| e.printStackTrace(); | ||
| } | ||
| } | ||
| } | ||
| public void SavaImage(Bitmap bitmap, String path){ | ||
| File file=new File(path); | ||
| FileOutputStream fileOutputStream=null; | ||
| if(!file.exists()){ | ||
| file.mkdir(); | ||
| } | ||
| try { | ||
| fileOutputStream=new FileOutputStream(path+"/"+System.currentTimeMillis()+".png"); | ||
| bitmap.compress(Bitmap.CompressFormat.JPEG, 100,fileOutputStream); | ||
| fileOutputStream.close(); | ||
| } catch (Exception e) { | ||
| e.printStackTrace(); | ||
| } | ||
| } | ||
| } |
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