Android图片相框

10 public static Bitmap zoomBitmap(Bitmap bitmap,int w,int h){

02

1. int width = bitmap.getWidth();

2. 03

3. int height = bitmap.getHeight();

4. 04

5. Matrix matrix = new Matrix();

6. 05

7. float scaleWidht = ((float)w / width);

8. 06

9. float scaleHeight = ((float)h / height);

10. 07

11. matrix.postScale(scaleWidht, scaleHeight);

12. 08

13. Bitmap newbmp = Bitmap.createBitmap(bitmap, 0, 0, width, height, matrix, true);

14. 09

15. return newbmp;

16.

17. }

= (ImageSwitcher)findViewById(R.id.switcher01);

mSwitcher.setFactory(this);

mSwitcher.setInAnimation(AnimationUtils.loadAnimation(this, android.R.anim.fade_in));

mSwitcher.setInAnimation(AnimationUtils.loadAnimation(this, android.R.anim.fade_out));

g = (Gallery)findViewById(R.id.gallery01);

//如果要从sdcard取图片需要改为new ImageAdapter(this,getSD());其中getSD()为自定义的方法

g.setAdapter(new ImageAdapter(this, getSD()));

g.setOnItemSelectedListener(this);

//为单击mSwitcher设置一个监听器

//显示Switcher里的模式

@Override

public View makeView() {

// TODO Auto-generated method stub

ImageView i = new ImageView(this);

i.setBackgroundColor(0xFF000000);

i.setScaleType(ImageView.ScaleType.FIT_CENTER);

i.setLayoutParams(new

youtParams(LayoutParams.FILL_PARENT,LayoutParams.FILL _PARENT));

return i;

}

//将gallery中选中的图片传给ImageSwitcher

@Override

public void onItemSelected(AdapterView parent, View v, int position,

long id) {

// TODO Auto-generated method stub

//取的当前图片路径，并将图片的路径给了mSwitcher

path = files[position].getPath();

uri = Uri.parse("file://"+path);

//System.out.println(uri);

mSwitcher.setImageURI(uri);

itemId = position;

}

public class ImageAdapter extends BaseAdapter {

int mGalleryItemBackground;

private Context mContext;

private List list;

public ImageAdapter(){}

public ImageAdapter(Context c,List li){

mContext = c;

list = li;

}

@Override

public int getCount() {

// TODO Auto-generated method stub

return list.size();

}

@Override

public Object getItem(int position) {

// TODO Auto-generated method stub

return position;

}

@Override

public long getItemId(int position) {

// TODO Auto-generated method stub

return position;

}

//显示Gallery里的模式

@Override

public View getView(int position, View convertView, ViewGroup parent) {

// TODO Auto-generated method stub

ImageView i = new ImageView(mContext);

Bitmap bm =

BitmapFactory.decodeFile(list.get(position).toString());

//System.out.println(list.get(position).toString());

i.setImageBitmap(bm);

i.setAdjustViewBounds(true);

i.setLayoutParams(new

youtParams(LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONT ENT));

i.setBackgroundResource(R.color.black);

return i;

}

android:id="@+id/RelativeLayout01"

android:layout_width="match_parent"

android:layout_height="match_parent"

>

android:id="@+id/switcher01"

android:layout_width="fill_parent"

android:layout_height="fill_parent"

android:layout_centerInParent="true"

/>

android:id="@+id/gallery01"

android:background="#55000000"

android:layout_width="fill_parent"

android:layout_height="60dp"

android:layout_alignParentBottom="true"

android:layout_alignParentLeft="true"