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torben |
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package dk.thoerup.side9; |
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import java.io.File; |
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import java.io.IOException; |
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import java.io.RandomAccessFile; |
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import java.util.ArrayList; |
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import android.app.Activity; |
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import android.graphics.Bitmap; |
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import android.graphics.BitmapFactory; |
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import android.os.Bundle; |
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import android.util.Log; |
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import android.view.MotionEvent; |
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import android.view.View; |
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import android.widget.ImageView; |
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import android.widget.TextView; |
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public class PictureView extends Activity { |
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final static String TAG = "Side9Pigen"; |
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TextView mDescription; |
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TextView mCaption; |
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ImageView mImageView; |
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ArrayList<String> mImagePaths; |
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int mIndex; |
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Bitmap mBitmap; |
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@SuppressWarnings("unchecked") |
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@Override |
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public void onCreate(Bundle savedInstanceState) { |
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super.onCreate(savedInstanceState); |
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setContentView(R.layout.pictureview); |
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mImagePaths = (ArrayList<String>) getIntent().getSerializableExtra("files"); |
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mIndex = getIntent().getIntExtra("index", 0); |
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mImageView = (ImageView) findViewById(R.id.imageview); |
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mImageView.setOnTouchListener( new Touch() ); |
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mDescription = (TextView) findViewById(R.id.description); |
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mCaption = (TextView) findViewById(R.id.caption); |
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loadImage(); |
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} |
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private void loadImage(int newIndex) { |
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Log.e(TAG, "NewIndex " + newIndex); |
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if (newIndex != mIndex) { |
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mIndex = newIndex; |
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loadImage(); |
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} |
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} |
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private void loadImage() { |
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String currentFile = mImagePaths.get(mIndex); |
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mBitmap = BitmapFactory.decodeFile( currentFile ); |
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mImageView.setImageBitmap(mBitmap); |
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String pathParts[] = currentFile.split("/"); |
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String fileName = pathParts[ pathParts.length -1]; |
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String desc = "" + (mIndex +1) + "/" + mImagePaths.size() + " - " + fileName; |
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mDescription.setText(desc); |
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String infoFileName = currentFile.replace(".jpg", ".txt"); |
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File infoFile = new File(infoFileName); |
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if (infoFile.exists() ) { |
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String caption = getFileContent(infoFile); |
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mCaption.setVisibility(View.VISIBLE); |
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mCaption.setText(caption); |
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} else { |
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mCaption.setVisibility(View.INVISIBLE); |
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} |
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} |
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String getFileContent(File filename) { |
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try { |
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RandomAccessFile raf = new RandomAccessFile(filename, "r"); |
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int size = (int)raf.length(); |
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byte buf[] = new byte[size]; |
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raf.readFully(buf); |
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return new String(buf); |
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} catch (IOException e) { |
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Log.e(TAG, "Error", e); |
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return ""; |
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} |
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} |
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class Touch implements View.OnTouchListener { |
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Float firstX = null; |
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@Override |
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public boolean onTouch(View v, MotionEvent event) { |
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if (event.getAction() == MotionEvent.ACTION_DOWN) { |
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firstX = event.getX(); |
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} else { |
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if (firstX != null) { |
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float x = event.getX(); |
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float diff = firstX - x; |
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if (diff > 150) { |
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int newIndex = Math.min(mIndex+1, mImagePaths.size() -1); |
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loadImage(newIndex); |
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firstX = null; |
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return false; |
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} |
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if (diff < -150) { |
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int newIndex = Math.max(mIndex-1, 0); |
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loadImage(newIndex); |
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firstX = null; |
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return false; |
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} |
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} |
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} |
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return true; |
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} |
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} |
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} |