Android CustomWebChromeClient openFileChooser Resize Görüntüyü Yükleyin Yüklemeden önce

Question

Güzel bir sayfa için bir Web görünümü kullanıyorum ve görüntüleri yüklemem gerekiyor. Şimdi Sorun, Çoğu Telefondaki görüntüler 2-3MB'tır ve görüntüyü yüklemeden önce görüntü kalitesini ve daha düşük kaliteyi yeniden boyutlandırmam gerekiyor. Peki, stackoverflow üzerinde bulunan örnek kodla nasıl yeniden boyutlandırabilirim?

Bu kod filechooser açıyor:

//Android 3.0 
public void openFileChooser(ValueCallback<Uri> uploadMsg) { 
    mUploadMessage = uploadMsg; 
    Intent i = new Intent(Intent.ACTION_GET_CONTENT); 
    i.addCategory(Intent.CATEGORY_OPENABLE); 
    i.setType("image/*"); 
    startActivityForResult(
     Intent.createChooser(i, "Image Browser"), 
     FILECHOOSER_RESULTCODE 
    ); 
} 

Şimdi ben bir kopyasını yapmak ve resized karşıya bazı boyutlandırmak ihtiyaç ve. (Ben howto bir resized kopyasını oluşturmak biliyorum ama nasıl ben Yukarıdaki kod ile etkileşim olabilir)

Answer 1

i biraz araştırma yaptım ve ..

dan Olurdu doğrudan açık galeri SO içerikle bir çözüm oluşturmak filechooser html ve 75.

package it.meininserat; 

import java.io.File; 
import java.io.FileNotFoundException; 
import java.io.FileOutputStream; 
import java.io.IOException; 
import java.util.Locale; 
import it.meininserat.R; 
import android.net.ConnectivityManager; 
import android.net.NetworkInfo; 
import android.net.Uri; 
import android.os.Build; 
import android.os.Bundle; 
import android.os.Environment; 
import android.provider.MediaStore; 
import android.annotation.SuppressLint; 
import android.annotation.TargetApi; 
import android.app.ActionBar; 
import android.app.Activity; 
import android.app.ProgressDialog; 
import android.content.ContentValues; 
import android.content.Context; 
import android.content.Intent; 
import android.database.Cursor; 
import android.graphics.Bitmap; 
import android.graphics.Bitmap.CompressFormat; 
import android.graphics.Bitmap.Config; 
import android.graphics.BitmapFactory; 
import android.graphics.BitmapFactory.Options; 
import android.graphics.Canvas; 
import android.graphics.Matrix; 
import android.graphics.Paint; 
import android.graphics.Point; 
import android.text.TextPaint; 
import android.util.Log; 
import android.view.Display; 
import android.view.KeyEvent; 
import android.view.Menu; 
import android.view.MenuItem; 
import android.view.ViewConfiguration; 
import android.view.Window; 
import android.view.WindowManager; 
import android.webkit.ValueCallback; 
import android.webkit.WebChromeClient; 
import android.webkit.WebSettings.PluginState; 
import android.webkit.WebView; 
import android.webkit.WebViewClient; 
import android.widget.TextView; 
import android.widget.Toast; 

@TargetApi(Build.VERSION_CODES.HONEYCOMB) 
@SuppressLint({ "NewApi", "SetJavaScriptEnabled" }) 
public class MainActivity extends Activity { 

// Main PAGE URL !! 
String myUrl = "http://www.imagebanana.com/"; // http://www.meininserat.it/mobile"; 

boolean hasNavigationBar = false; 
AdView adView; 
WebView mWebView; 

Context context; 

ProgressDialog progDailog; 

@SuppressLint("NewApi") 
@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 

    // loader 
    progDailog = ProgressDialog.show(this, "Verbindung aufbauen..", 
      "Lade ....bitte warten....", true); 

    // Fullscreen and Menubar in ICS 
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH) { 
     hasNavigationBar = !ViewConfiguration.get(this) 
       .hasPermanentMenuKey(); 
     if (hasNavigationBar == true) { 
      getWindow().requestFeature(Window.FEATURE_ACTION_BAR); 
      getActionBar().show(); 
     } else { 
      ActionBar actionBar = getActionBar(); 
      actionBar.setDisplayShowTitleEnabled(false); 
      getActionBar().hide(); 

     } 
    } else { 
     this.requestWindowFeature(Window.FEATURE_NO_TITLE); 
    } 

    this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, 
      WindowManager.LayoutParams.FLAG_FULLSCREEN); 
    setContentView(R.layout.activity_main); 

    // check internet 

    if (isNetworkAvailable(context) != true) { 
     progDailog.dismiss(); 
     Toast.makeText(getApplicationContext(), 
       "Fehler ! Keine Internetverbindung.", Toast.LENGTH_LONG) 
       .show(); 
     finish(); 
    } 

    // load url 
    mWebView = (WebView) findViewById(R.id.webview); 
    mWebView.setWebViewClient(new HelloWebViewClient()); 
    mWebView.getSettings().setJavaScriptEnabled(true); 
    mWebView.getSettings().setPluginState(PluginState.ON); 
    mWebView.getSettings().setPluginsEnabled(true); 
    mWebView.getSettings().setUseWideViewPort(true); 
    mWebView.getSettings().setUserAgentString(
      Locale.getDefault().getLanguage()); 

    /* 
    * Language detection URL String myDisplayLang = 
    * Locale.getDefault().getDisplayLanguage() .toString(); 
    * 
    * if (myDisplayLang.contentEquals("italiano")) { myUrl = 
    * "http://www.meininserat.it/mobile"; }else{ myUrl = 
    * "http://www.meininserat.it/mobile"; } 
    */ 

    mWebView.loadUrl(myUrl); 
    mWebView.setWebChromeClient(new CustomWebChromeClient()); 

    mWebView.setWebViewClient(new WebViewClient() { 

     @Override 
     public void onPageFinished(WebView view, String url) { 
      progDailog.dismiss(); 
     } 

     @Override 
     public void onReceivedError(WebView view, int errorCode, 
       String description, String failingUrl) { 
      progDailog.dismiss(); 
      Toast.makeText(getApplicationContext(), 
        "Fehler ! " + description, Toast.LENGTH_LONG).show(); 
     } 

    }); 

} 

// check internet connection 
public static boolean isNetworkAvailable(Context context) { 
    ConnectivityManager connectivityManager = (ConnectivityManager) context 
      .getSystemService(Context.CONNECTIVITY_SERVICE); 
    NetworkInfo activeNetworkInfo = connectivityManager 
      .getActiveNetworkInfo(); 
    return activeNetworkInfo != null && activeNetworkInfo.isConnected(); 
} 

@Override 
public boolean onCreateOptionsMenu(Menu menu) { 
    // Inflate the menu; this adds items to the action bar if it is present. 
    getMenuInflater().inflate(R.menu.menu, menu); 
    return true; 
} 

@Override 
public boolean onOptionsItemSelected(MenuItem item) { 

    switch (item.getItemId()) { 
    case R.id.menu_rate: 
     new AppRating().goToMarket(context); 
     return true; 
    case R.id.menu_exit: 
     finish(); 
     return true; 
    default: 
     return super.onOptionsItemSelected(item); 
    } 
} 

@Override 
public boolean onKeyDown(int keyCode, KeyEvent event) { 
    if (keyCode == KeyEvent.KEYCODE_BACK) { 
     if (mWebView.canGoBack() == true) { 
      mWebView.goBack(); 
     } else { 
      finish(); 
     } 
     return true; 
    } 
    return super.onKeyDown(keyCode, event); 
} 

private class HelloWebViewClient extends WebViewClient { 
    @Override 
    public boolean shouldOverrideUrlLoading(WebView view, String url) { 
     view.loadUrl(url); 
     return true; 
    } 
} 

public String getPath(Uri uri) { 
    String[] projection = { MediaStore.Images.Media.DATA }; 
    Cursor cursor = managedQuery(uri, projection, null, null, null); 
    int column_index = cursor 
      .getColumnIndexOrThrow(MediaStore.Images.Media.DATA); 
    cursor.moveToFirst(); 
    return cursor.getString(column_index); 
} 

public static Uri getImageContentUri(Context context, File imageFile) { 
    String filePath = imageFile.getAbsolutePath(); 
    Cursor cursor = context.getContentResolver().query(
      MediaStore.Images.Media.EXTERNAL_CONTENT_URI, 
      new String[] { MediaStore.Images.Media._ID }, 
      MediaStore.Images.Media.DATA + "=? ", 
      new String[] { filePath }, null); 
    if (cursor != null && cursor.moveToFirst()) { 
     int id = cursor.getInt(cursor 
       .getColumnIndex(MediaStore.MediaColumns._ID)); 
     Uri baseUri = Uri.parse("content://media/external/images/media"); 
     return Uri.withAppendedPath(baseUri, "" + id); 
    } else { 
     if (imageFile.exists()) { 
      ContentValues values = new ContentValues(); 
      values.put(MediaStore.Images.Media.DATA, filePath); 
      return context.getContentResolver().insert(
        MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values); 
     } else { 
      return null; 
     } 
    } 
} 

// Fix Upload 
private ValueCallback<Uri> mUploadMessage; 
private final static int FILECHOOSER_RESULTCODE = 1; 

@Override 
protected void onActivityResult(int requestCode, int resultCode, 
     Intent intent) { 
    if (requestCode == FILECHOOSER_RESULTCODE) { 
     if (null == mUploadMessage) 
      return; 
     if (resultCode != RESULT_OK) { 
      mUploadMessage.onReceiveValue(null); 
      return; 
     } 
     Uri result = intent.getData(); // get file 
     if (result == null) { 
      mUploadMessage.onReceiveValue(null); 
      return; 
     } 

     String fPath = getPath(result); 

     // we actually don't allow http links in gallery like google+ or 
     // facebook images 
     File file = new File(fPath); 
     if (!file.exists()) { 
      mUploadMessage.onReceiveValue(null); 
      Toast.makeText(getApplicationContext(), 
        "Please select a local Imagefile.", Toast.LENGTH_LONG) 
        .show(); 
      return; 
     } 

     // Resize+ 
     Bitmap bitmap = BitmapFactory.decodeFile(fPath); 
     int newWidth = 200; 
     int newHeight = 200; 
     Bitmap scaledBitmap = Bitmap.createBitmap(newWidth, newHeight, 
       Config.ARGB_8888); 

     float ratioX = newWidth/(float) bitmap.getWidth(); 
     float ratioY = newHeight/(float) bitmap.getHeight(); 
     float middleX = newWidth/2.0f; 
     float middleY = newHeight/2.0f; 

     Matrix scaleMatrix = new Matrix(); 
     scaleMatrix.setScale(ratioX, ratioY, middleX, middleY); 

     Canvas canvas = new Canvas(scaledBitmap); 
     canvas.setMatrix(scaleMatrix); 
     canvas.drawBitmap(bitmap, middleX - bitmap.getWidth()/2, middleY 
       - bitmap.getHeight()/2, new Paint(
       Paint.FILTER_BITMAP_FLAG)); 

     String resizedFileName = "ImageResized.png"; 
     File sdCard = Environment.getExternalStorageDirectory(); 
     File dir = new File(sdCard.getAbsolutePath()); 
     File filedir = new File(dir, resizedFileName); 

     try { 
      FileOutputStream fos = new FileOutputStream(filedir); 
      scaledBitmap.compress(CompressFormat.PNG, 70, fos); 
      fos.close(); 

     } catch (FileNotFoundException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
      mUploadMessage.onReceiveValue(null); 
      return; 
     } catch (IOException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
      mUploadMessage.onReceiveValue(null); 
      return; 
     } 

     mUploadMessage.onReceiveValue(getImageContentUri(context, filedir)); 

    } 
} 

protected class CustomWebChromeClient extends WebChromeClient { 

    // For Android > 4.1 
    public void openFileChooser(ValueCallback<Uri> uploadMsg, 
      String acceptType, String capture) { 
     openFileChooser(uploadMsg); 
    } 

    // Andorid 3.0 + 
    public void openFileChooser(ValueCallback<Uri> uploadMsg, 
      String acceptType) { 
     openFileChooser(uploadMsg); 
    } 

    // Android 3.0 
    public void openFileChooser(ValueCallback<Uri> uploadMsg) { 
     mUploadMessage = uploadMsg; 
     Intent i = new Intent(
       Intent.ACTION_PICK, 
       android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI); 
     // i.addCategory(Intent.CATEGORY_APP_GALLERY); 
     i.setType("image/*"); 
     // startActivityForResult(Intent.createChooser(i, 
     // "Image Browser"),FILECHOOSER_RESULTCODE); 
     startActivityForResult(i, FILECHOOSER_RESULTCODE); 
    } 

} 


} 

birisi yardımcı olabilecek Umut 200x200 boyutunu ve kalitesini örnek görüntüyü yeniden boyutlandırmak ...