ImageView Mehrere Bitmaps anzeigen

1public class SortActivity extends Activity {
2
3 String name;
4 String path;
5
6 List<File> images = new ArrayList<File>();
7 ImageView imageview;
8 int position = 0;
9
10 private static final int SWIPE_MIN_DISTANCE = 120;
11 private static final int SWIPE_MAX_OFF_PATH = 250;
12 private static final int SWIPE_THRESHOLD_VELOCITY = 200;
13 private GestureDetector gestureDetector;
14 View.OnTouchListener gestureListener;
15 Bitmap bm;
16
17 private static int maxSize;
18
19 @SuppressWarnings("unused")
20 private boolean isImage(File file) {
21 BitmapFactory.Options options = new BitmapFactory.Options();
22 options.inJustDecodeBounds = true;
23 Bitmap bitmap = BitmapFactory.decodeFile(file.getAbsolutePath(), options);
24 return (options.outWidth != -1 && options.outHeight != -1);
25 }
26
27 @Override
28 protected void onCreate(Bundle savedInstanceState) {
29 super.onCreate(savedInstanceState);
30 setContentView(R.layout.activity_sort);
31
32 int[] max = new int[1];
33 GLES10.glGetIntegerv(GL10.GL_MAX_TEXTURE_SIZE, max, 0);
34
35 maxSize = max[0] / 2;
36
37 imageview = (ImageView) findViewById(R.id.imageView);
38
39 Bundle bundle = getIntent().getExtras();
40 name = bundle.getString("name");
41 path = bundle.getString("path");
42
43 gestureDetector = new GestureDetector(this, new MyGestureDetector());
44 gestureListener = new View.OnTouchListener() {
45
46 public boolean onTouch(View v, MotionEvent event) {
47 return gestureDetector.onTouchEvent(event);
48 }
49 };
50
51 setTitle("Source: " + name);
52
53 File dir = new File(path);
54
55 for(File file : dir.listFiles()) {
56 if(isImage(file)) {
57 images.add(file);
58 }
59 }
60
61 imageview.setImageBitmap(getBitmap(images.get(position)));
62 }
63
64 public static int calculateInSampleSize(BitmapFactory.Options options, int reqWidth, int reqHeight) {
65
66 final int height = options.outHeight;
67 final int width = options.outWidth;
68 int inSampleSize = 1;
69
70 if (height > reqHeight || width > reqWidth) {
71
72 final int halfHeight = height / 2;
73 final int halfWidth = width / 2;
74
75 while ((halfHeight / inSampleSize) > reqHeight
76 && (halfWidth / inSampleSize) > reqWidth) {
77 inSampleSize *= 2;
78 }
79 }
80
81 return inSampleSize;
82 }
83
84 public static Bitmap getBitmap(File file) {
85
86
87 // First decode with inJustDecodeBounds=true to check dimensions
88 final BitmapFactory.Options options = new BitmapFactory.Options();
89 options.inJustDecodeBounds = true;
90 BitmapFactory.decodeFile(file.getAbsolutePath(), options);
91
92 // Calculate inSampleSize
93 options.inSampleSize = calculateInSampleSize(options, maxSize, maxSize);
94
95 // Decode bitmap with inSampleSize set
96 options.inJustDecodeBounds = false;
97 return BitmapFactory.decodeFile(file.getAbsolutePath(), options);
98 }
99
100 @Override
101 public boolean onTouchEvent(MotionEvent event) {
102 return gestureDetector.onTouchEvent(event);
103 }
104
105 @Override
106 public boolean onCreateOptionsMenu(Menu menu) {
107 // Inflate the menu; this adds items to the action bar if it is present.
108 getMenuInflater().inflate(R.menu.sort, menu);
109 return true;
110 }
111
112 class MyGestureDetector extends GestureDetector.SimpleOnGestureListener {
113 @Override
114 public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
115 try {
116 if (Math.abs(e1.getY() - e2.getY()) > SWIPE_MAX_OFF_PATH) {
117 return false;
118 }
119
120 if (e1.getX() - e2.getX() > SWIPE_MIN_DISTANCE && Math.abs(velocityX) > SWIPE_THRESHOLD_VELOCITY) {
121 if(position != images.size() - 1) {
122 imageview.setImageBitmap(getBitmap(images.get(position)));
123 }
124 } else if (e2.getX() - e1.getX() > SWIPE_MIN_DISTANCE && Math.abs(velocityX) > SWIPE_THRESHOLD_VELOCITY) {
125 if(position != 0) {
126 imageview.setImageBitmap(getBitmap(images.get(position)));
127 }
128 }
129 } catch (Exception e) {
130
131 }
132
133 return false;
134 }
135 }
136
137}

1public class SortActivity extends Activity {
2
3 ImageLoader imageLoader;
4
5 List<String> images = new ArrayList<String>();
6
7 String name;
8 String path;
9 ImageView imageView;
10
11 private static final int SWIPE_MIN_DISTANCE = 120;
12 private static final int SWIPE_MAX_OFF_PATH = 250;
13 private static final int SWIPE_THRESHOLD_VELOCITY = 200;
14 private GestureDetector gestureDetector;
15 View.OnTouchListener gestureListener;
16
17 DisplayImageOptions options = new DisplayImageOptions.Builder()
18 .resetViewBeforeLoading(true)
19 .cacheOnDisc(true)
20 .imageScaleType(ImageScaleType.EXACTLY)
21 .bitmapConfig(Bitmap.Config.RGB_565)
22 .considerExifParams(true)
23 .displayer(new FadeInBitmapDisplayer(300))
24 .build();
25
26 int position = 0;
27
28 @SuppressWarnings("unused")
29 private boolean isImage(File file) {
30 BitmapFactory.Options options = new BitmapFactory.Options();
31 options.inJustDecodeBounds = true;
32 Bitmap bitmap = BitmapFactory.decodeFile(file.getAbsolutePath(), options);
33 return (options.outWidth != -1 && options.outHeight != -1);
34 }
35
36 class MyGestureDetector extends GestureDetector.SimpleOnGestureListener {
37 @Override
38 public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
39 try {
40 if (Math.abs(e1.getY() - e2.getY()) > SWIPE_MAX_OFF_PATH) {
41 return false;
42 }
43
44 if (e1.getX() - e2.getX() > SWIPE_MIN_DISTANCE && Math.abs(velocityX) > SWIPE_THRESHOLD_VELOCITY) {
45 if(position != images.size() - 1) {
46 position += 1;
47 imageLoader.displayImage(images.get(position), imageView, options);
48 System.out.println("...");
49 }
50 } else if (e2.getX() - e1.getX() > SWIPE_MIN_DISTANCE && Math.abs(velocityX) > SWIPE_THRESHOLD_VELOCITY) {
51 if(position != 0) {
52 position -= 1;
53 imageLoader.displayImage(images.get(position), imageView, options);
54 System.out.println("...");
55 }
56 }
57 } catch (Exception e) {
58
59 }
60
61 return false;
62 }
63 }
64
65 @Override
66 protected void onCreate(Bundle savedInstanceState) {
67 super.onCreate(savedInstanceState);
68 setContentView(R.layout.activity_sort);
69
70 ImageLoaderConfiguration config = new ImageLoaderConfiguration.Builder(this)
71 .memoryCacheSize(41943040)
72 .discCacheSize(104857600)
73 .threadPoolSize(10)
74 .build();
75
76 imageLoader = ImageLoader.getInstance();
77 imageLoader.init(config);
78
79 Bundle bundle = getIntent().getExtras();
80 name = bundle.getString("name");
81 path = bundle.getString("path");
82
83 gestureDetector = new GestureDetector(this, new MyGestureDetector());
84 gestureListener = new View.OnTouchListener() {
85
86 @Override
87 public boolean onTouch(View v, MotionEvent event) {
88 return gestureDetector.onTouchEvent(event);
89 }
90
91 };
92
93 setTitle("Source: " + name);
94
95 File dir = new File(path);
96
97 for(File file : dir.listFiles()) {
98 if(isImage(file)) {
99 images.add(file.getAbsolutePath());
100 }
101 }
102
103 imageLoader.displayImage(images.get(position), imageView, options);
104
105 }
106
107}