Android-Gallery instance

1) Create Project Gallery04
2) Import images
3) write an ImageAdapter
4) Compile GalleryFlow
5) Compile layout_gallery.xml
6) Compile Gallery04Activity

 

 

Import android. content. Context;
Import android. content. res. Resources;
Import android. graphics. Bitmap;
Import android. graphics. BitmapFactory;
Import android. graphics. Canvas;
Import android. graphics. LinearGradient;
Import android. graphics. Matrix;
Import android. graphics. Paint;
Import android. graphics. porterduduxfermode;
Import android. graphics. Bitmap. Config;
Import android. graphics. PorterDuff. Mode;
Import android. graphics. Shader. TileMode;
Import android. view. View;
Import android. view. ViewGroup;
Import android. widget. BaseAdapter;
Import android. widget. ImageView;
Import android. widget. ImageView. ScaleType;

Public class ImageAdapter extends BaseAdapter {

Int mGalleryItemBackground;
Private Context mContext;
Private Integer [] mImageIds;
Private ImageView [] mImages;

Public ImageAdapter (Context c, Integer [] ImageIds ){
MContext = c;
MImageIds = ImageIds;
MImages = new ImageView [mImageIds. length];
}

Public boolean createReflectedImages (){
Final int reflectionGap = 4;
Int index = 0;

For (int imageId: mImageIds ){
Bitmap originalImage = BitmapFactory. decodeResource (mContext
. GetResources (), imageId );
Int width = originalImage. getWidth ();
Int height = originalImage. getHeight ();

Matrix matrix = new Matrix ();
Matrix. preScale (1,-1 );

Bitmap reflectionImage = Bitmap. createBitmap (originalImage, 0,
Height/2, width, height/2, matrix, false );

Bitmap bitmapWithReflection = Bitmap. createBitmap (width,
(Height + height/2), Config. ARGB_8888 );

Canvas canvas = new Canvas (bitmapWithReflection );

Canvas. drawBitmap (originalImage, 0, 0, null );

Paint deafaultPaint = new Paint ();
Canvas. drawRect (0, height, width, height + reflectionGap,
DeafaultPaint );

Canvas. drawBitmap (reflectionImage, 0, height + reflectionGap, null );

Paint paint = new Paint ();
LinearGradient shader = new LinearGradient (0, originalImage
. GetHeight (), 0, bitmapWithReflection. getHeight ()
+ ReflectionGap, 0x70ffffff, 0x00ffffff, TileMode. CLAMP );

Paint. setShader (shader );

Paint. setXfermode (new porterduxfermode (Mode. DST_IN ));

Canvas. drawRect (0, height, width, bitmapWithReflection. getHeight ()
+ ReflectionGap, paint );

ImageView imageView = new ImageView (mContext );
ImageView. setImageBitmap (bitmapWithReflection );
ImageView. setLayoutParams (new GalleryFlow. LayoutParams (180,240 ));
// ImageView. setScaleType (ScaleType. MATRIX );
MImages [index ++] = imageView;
}
Return true;
}

Private Resources getResources (){
// TODO Auto-generated method stub
Return null;
}

Public int getCount (){
Return mImageIds. length;
}

Public Object getItem (int position ){
Return position;
}

Public long getItemId (int position ){
Return position;
}

Public View getView (int position, View convertView, ViewGroup parent ){
Return mImages [position];
}

Public float getScale (boolean focused, int offset ){
Return Math. max (0, 1.0f/(float) Math. pow (2, Math. abs (offset )));
}

}

Package com. kingsoft. gallery04;

Import android. content. Context;
Import android. graphics. Camera;
Import android. util. AttributeSet;
Import android. view. View;
Import android. widget. Gallery;

Public class GalleryFlow extends Gallery {

Private Camera mCamera = new Camera ();
Private int mMaxRotationAngle = 60;
Private int mMaxZoom =-120;
Private int mCoveflowCenter;

Public GalleryFlow (Context context ){
Super (context );
// TODO Auto-generated constructor stub
This. setStaticTransformationsEnabled (true );
}

Public GalleryFlow (Context context, AttributeSet attrs ){
Super (context, attrs );
// TODO Auto-generated constructor stub
This. setStaticTransformationsEnabled (true );
}

Public GalleryFlow (Context context, AttributeSet attrs, int defStyle ){
Super (context, attrs, defStyle );
// TODO Auto-generated constructor stub
This. setStaticTransformationsEnabled (true );
}

Public int getMaxRotationAngle (){
Return mMaxRotationAngle;
}

Public void setMaxRotationAngle (int maxRotationAngle ){
MMaxRotationAngle = maxRotationAngle;
}

Public int getMaxZoom (){
Return mMaxZoom;
}

Public void setMaxZoom (int maxZoom ){
MMaxZoom = maxZoom;
}

Private int getCenterOfCoverflow (){
Return (getWidth ()-getPaddingLeft ()-getPaddingRight ()/2
+ GetPaddingLeft ();
}

Private static int getCenterOfView (View view ){
Return view. getLeft () + view. getWidth ()/2;
}

Protected void onSizeChanged (int w, int h, int oldw, int oldh ){
MCoveflowCenter = getCenterOfCoverflow ();
Super. onSizeChanged (w, h, oldw, oldh );
}

}

Www.2cto.com
<? Xml version = "1.0" encoding = "UTF-8"?>
<RelativeLayout xmlns: android = "http://schemas.android.com/apk/res/android"
Android: orientation = "vertical"
Android: layout_width = "fill_parent"
Android: layout_height = "fill_parent"
Android: background = "# ffffff"
>

<Com. kingsoft. gallery04.GalleryFlow
Android: id = "@ + id/Gallery04"
Android: layout_width = "fill_parent"
Android: layout_height = "wrap_content"
Android: layout_centerInParent = "true"/>
</RelativeLayout>

Package com. kingsoft. gallery04;

Import android. app. Activity;
Import android. OS. Bundle;

Public class Gallery04Activity extends Activity {
/** Called when the activity is first created .*/
@ Override
Public void onCreate (Bundle savedInstanceState ){
Super. onCreate (savedInstanceState );
SetContentView (R. layout. layout_gallery );

Integer [] images = {R. drawable. img0001, R. drawable. img0030,
R. drawable. im0000100, R. drawable. img0130, R. drawable. im0000200,
R. drawable. img0230, R. drawable. im0000300, R. drawable. img0330,
R. drawable. im1_354 };

ImageAdapter adapter = new ImageAdapter (this, images );
// Adapter. createReflectionImages ();
Adapter. createReflectedImages ();
GalleryFlow galleryFlow = (GalleryFlow) findViewById (R. id. Gallery04 );
GalleryFlow. setAdapter (adapter );


}
}

Run.

 

Modify the following to add the animation effect:

Anim. xml

<? Xml version = "1.0" encoding = "UTF-8"?>
<Set xmlns: android = "http://schemas.android.com/apk/res/android">
<Scale
Android: interpolator = "@ android: anim/accelerate_decelerate_interpolator"
Android: fromXScale = "0.5"
Android: toXScale = "1"
Android: fromYScale = "0.5"
Android: toYScale = "1"
Android: Required Tx = "50%"
Android: Ty = "50%"
Android: fillBefore = "true"
Android: fillAfter = "true"
Android: duration= "1000"
>

</Scale>
</Set>
Modify Gallery04Activity

Package com. kingsoft. gallery04;

Import android. app. Activity;
Import android. OS. Bundle;
Import android. view. MotionEvent;
Import android. view. View;
Import android. view. View. OnClickListener;
Import android. view. View. OnFocusChangeListener;
Import android. view. View. OnTouchListener;
Import android. view. animation. Animation;
Import android. view. animation. AnimationSet;
Import android. view. animation. AnimationUtils;
Import android. widget. AdapterView;
Import android. widget. AdapterView. OnItemClickListener;
Import android. widget. AdapterView. OnItemLongClickListener;
Import android. widget. AdapterView. OnItemSelectedListener;

Public class Gallery04Activity extends Activity {
/** Called when the activity is first created .*/
@ Override
Public void onCreate (Bundle savedInstanceState ){
Super. onCreate (savedInstanceState );
SetContentView (R. layout. layout_gallery );

Integer [] images = {R. drawable. img0001, R. drawable. img0030,
R. drawable. im0000100, R. drawable. img0130, R. drawable. im0000200,
R. drawable. img0230, R. drawable. im0000300, R. drawable. img0330,
R. drawable. im1_354 };

Final Animation anim = AnimationUtils. loadAnimation (getApplicationContext (), R. layout. anim );
Final AnimationSet animationSet = new AnimationSet (true );

ImageAdapter adapter = new ImageAdapter (this, images );
// Adapter. createReflectionImages ();
Adapter. createReflectedImages ();
GalleryFlow galleryFlow = (GalleryFlow) findViewById (R. id. Gallery04 );
GalleryFlow. setAdapter (adapter );

/*
* Animation triggered in the middle of the screen
*/
// GalleryFlow. setOnItemSelectedListener (new OnItemSelectedListener (){
//
// @ Override
// Public void onItemSelected (AdapterView <?> Arg0, View arg1,
// Int arg2, long arg3 ){
/// TODO Auto-generated method stub
// Gallery04Activity. this. setTitle (String. valueOf (arg2 ));
// Arg1.startAnimation (anim );
//
//
//}
//
// @ Override
// Public void onNothingSelected (AdapterView <?> Arg0 ){
/// TODO Auto-generated method stub
//
//}
//});


/**
* Click the option to trigger the animation.
*/
// GalleryFlow. setOnItemClickListener (new OnItemClickListener (){
//
// @ Override
// Public void onItemClick (AdapterView <?> Arg0, View arg1, int arg2,
// Long arg3 ){
/// TODO Auto-generated method stub
// Gallery04Activity. this. setTitle (String. valueOf (arg3 ));
// Arg1.startAnimation (anim );
//
//}
//});



/**
* Animation effects cannot be triggered.
*/
// GalleryFlow. setOnFocusChangeListener (new OnFocusChangeListener (){
//
// @ Override
// Public void onFocusChange (View v, boolean hasFocus ){
/// TODO Auto-generated method stub
// Gallery04Activity. this. setTitle (String. valueOf (v. getId ()));
// V. startAnimation (anim );
//
//}
//});

/**
* Not applicable. It applies to the entire gallery instead of a single Item.
*/
// GalleryFlow. setOnTouchListener (new OnTouchListener (){
//
// @ Override
// Public boolean onTouch (View v, MotionEvent event ){
/// TODO Auto-generated method stub
// Gallery04Activity. this. setTitle (String. valueOf (v. getId ()));
// V. startAnimation (anim );
// Return true;
//}
//});


GalleryFlow. setOnItemClickListener (new OnItemClickListener (){

@ Override
Public void onItemClick (AdapterView <?> Arg0, View arg1, int arg2,
Long arg3 ){
// TODO Auto-generated method stub
Arg0.setOnItemSelectedListener (new OnItemSelectedListener (){

@ Override
Public void onItemSelected (AdapterView <?> Arg0, View arg1,
Int arg2, long arg3 ){
// TODO Auto-generated method stub
Gallery04Activity. this. setTitle (String. valueOf (arg2 ));
Arg1.startAnimation (anim );
}

@ Override
Public void onNothingSelected (AdapterView <?> Arg0 ){
// TODO Auto-generated method stub

}
});
}

 

});


/**
* No obvious effect
*/
// GalleryFlow. setOnItemLongClickListener (new OnItemLongClickListener (){
//
// @ Override
// Public boolean onItemLongClick (AdapterView <?> Arg0, View arg1,
// Int arg2, long arg3 ){
/// TODO Auto-generated method stub
// Return false;
//}
//});
}
}

From the column of BELLSONG