thoerup/side9/PictureView.java

package dk.thoerup.side9;

import java.io.File;
import java.io.IOException;
import java.io.RandomAccessFile;
import java.util.ArrayList;

import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.util.Log;
import android.view.MotionEvent;
import android.view.View;
import android.widget.ImageView;
import android.widget.TextView;

public class PictureView extends Activity {

        final static String TAG = "Side9Pigen";
        
        TextView mDescription;
        TextView mCaption;
        ImageView mImageView;
        ArrayList<String> mImagePaths;
        int mIndex;
        
        
        Bitmap mBitmap;
        
        @SuppressWarnings("unchecked")
        @Override
        public void onCreate(Bundle savedInstanceState) {
                super.onCreate(savedInstanceState);
                setContentView(R.layout.pictureview);
                
                mImagePaths = (ArrayList<String>) getIntent().getSerializableExtra("files");
                mIndex = getIntent().getIntExtra("index", 0);
                
                
                mImageView = (ImageView) findViewById(R.id.imageview);
                mImageView.setOnTouchListener( new Touch() );
                                
                mDescription = (TextView) findViewById(R.id.description);
                mCaption = (TextView) findViewById(R.id.caption);
                
                loadImage();
                
        }
        
        private void loadImage(int newIndex) {
                Log.e(TAG, "NewIndex " + newIndex);
                if (newIndex != mIndex) {
                        mIndex = newIndex;
                        loadImage();
                }
        }
        
        private void loadImage() {
                String currentFile = mImagePaths.get(mIndex);
                mBitmap = BitmapFactory.decodeFile( currentFile );
                mImageView.setImageBitmap(mBitmap);             
                
                String pathParts[] = currentFile.split("/");
                String fileName = pathParts[ pathParts.length -1];
                String desc = "" + (mIndex +1) + "/" + mImagePaths.size() + " - " + fileName;
                mDescription.setText(desc);
                
                String infoFileName = currentFile.replace(".jpg", ".txt");

                File infoFile = new File(infoFileName);
                if (infoFile.exists() ) {
                        String caption = getFileContent(infoFile);
                        mCaption.setVisibility(View.VISIBLE);
                        mCaption.setText(caption);

                } else {
                        mCaption.setVisibility(View.INVISIBLE);
                }
        }
        
        String getFileContent(File filename) {
                try {
                        RandomAccessFile raf = new RandomAccessFile(filename, "r");
                        int size = (int)raf.length();
                        byte buf[] = new byte[size];
                        
                        raf.readFully(buf);
                        return new String(buf);                 
                } catch (IOException e) {
                        Log.e(TAG, "Error", e);
                        return "";
                }
        }
        
        class Touch implements View.OnTouchListener {

                Float firstX = null;
                
                
                @Override
                public boolean onTouch(View v, MotionEvent event) {
                        if (event.getAction() == MotionEvent.ACTION_DOWN) {
                                firstX = event.getX();
                        } else {
                                if (firstX != null) {
                                        float x = event.getX();                                 
                                        float diff = firstX - x;                                        
                                        
                                        if (diff > 150) {
                                                int newIndex = Math.min(mIndex+1, mImagePaths.size() -1);                                                                               
                                                loadImage(newIndex);
                                                firstX = null;
                                                return false;
                                        }
                                        
                                        if (diff < -150) {
                                                int newIndex = Math.max(mIndex-1, 0);                                           
                                                loadImage(newIndex);
                                                firstX = null;
                                                return false;
                                        }
                                }       
                        }
                        
                        return true;
                }
                
        }
}
1	package dk.thoerup.side9;
2
3	import java.io.File;
4	import java.io.IOException;
5	import java.io.RandomAccessFile;
6	import java.util.ArrayList;
7
8	import android.app.Activity;
9	import android.graphics.Bitmap;
10	import android.graphics.BitmapFactory;
11	import android.os.Bundle;
12	import android.util.Log;
13	import android.view.MotionEvent;
14	import android.view.View;
15	import android.widget.ImageView;
16	import android.widget.TextView;
17
18	public class PictureView extends Activity {
19
20	final static String TAG = "Side9Pigen";
21
22	TextView mDescription;
23	TextView mCaption;
24	ImageView mImageView;
25	ArrayList<String> mImagePaths;
26	int mIndex;
27
28
29	Bitmap mBitmap;
30
31	@SuppressWarnings("unchecked")
32	@Override
33	public void onCreate(Bundle savedInstanceState) {
34	super.onCreate(savedInstanceState);
35	setContentView(R.layout.pictureview);
36
37	mImagePaths = (ArrayList<String>) getIntent().getSerializableExtra("files");
38	mIndex = getIntent().getIntExtra("index", 0);
39
40
41	mImageView = (ImageView) findViewById(R.id.imageview);
42	mImageView.setOnTouchListener( new Touch() );
43
44	mDescription = (TextView) findViewById(R.id.description);
45	mCaption = (TextView) findViewById(R.id.caption);
46
47	loadImage();
48
49	}
50
51	private void loadImage(int newIndex) {
52	Log.e(TAG, "NewIndex " + newIndex);
53	if (newIndex != mIndex) {
54	mIndex = newIndex;
55	loadImage();
56	}
57	}
58
59	private void loadImage() {
60	String currentFile = mImagePaths.get(mIndex);
61	mBitmap = BitmapFactory.decodeFile( currentFile );
62	mImageView.setImageBitmap(mBitmap);
63
64	String pathParts[] = currentFile.split("/");
65	String fileName = pathParts[ pathParts.length -1];
66	String desc = "" + (mIndex +1) + "/" + mImagePaths.size() + " - " + fileName;
67	mDescription.setText(desc);
68
69	String infoFileName = currentFile.replace(".jpg", ".txt");
70
71	File infoFile = new File(infoFileName);
72	if (infoFile.exists() ) {
73	String caption = getFileContent(infoFile);
74	mCaption.setVisibility(View.VISIBLE);
75	mCaption.setText(caption);
76
77	} else {
78	mCaption.setVisibility(View.INVISIBLE);
79	}
80	}
81
82	String getFileContent(File filename) {
83	try {
84	RandomAccessFile raf = new RandomAccessFile(filename, "r");
85	int size = (int)raf.length();
86	byte buf[] = new byte[size];
87
88	raf.readFully(buf);
89	return new String(buf);
90	} catch (IOException e) {
91	Log.e(TAG, "Error", e);
92	return "";
93	}
94	}
95
96	class Touch implements View.OnTouchListener {
97
98	Float firstX = null;
99
100
101	@Override
102	public boolean onTouch(View v, MotionEvent event) {
103	if (event.getAction() == MotionEvent.ACTION_DOWN) {
104	firstX = event.getX();
105	} else {
106	if (firstX != null) {
107	float x = event.getX();
108	float diff = firstX - x;
109
110	if (diff > 150) {
111	int newIndex = Math.min(mIndex+1, mImagePaths.size() -1);
112	loadImage(newIndex);
113	firstX = null;
114	return false;
115	}
116
117	if (diff < -150) {
118	int newIndex = Math.max(mIndex-1, 0);
119	loadImage(newIndex);
120	firstX = null;
121	return false;
122	}
123	}
124	}
125
126	return true;
127	}
128
129	}
130	}