图像的显示

根据屏幕的长度和宽度设置图像的显示

Display currentDisplay=getWindowmanager().getDefaultDisplay();

int dw=currentDisplay.getWidth();

int dh=currentDisplay.getHeight();

BitmapFactory.options bmpFactoryOptions=new BitmapFactory.Options();

bmpFactoryOptions.inJustDecodeBounds=true;

Bitmap bmp=BitmapFactory.decodeFile(imageFilePath,bmpFactoryOptions);

int heightRatio=(int)Math.ceil(bmpFactoryOptions.outHeight/(float)dh);

int widthRation=(int)Math.ceil(bmpFactoryOptions.outWidth/(float)dw);

//if(heightRation>1&&widthRatio>1){

  if(heightRation>widthRatio){

        //若高度比率更大，则根据它进行缩放

      bmpFactoryOptions.insampleSize=heightRatio;

  }ele{

        //若宽度比率更大，则根据它进行缩放

      bmpFactoryOptions.insampleSize=widthRatio;

}

bmpFactoryOptions.inJustDecodeBounds=false;

bmp=BitmapFactory.decodeFile(imageFilePath,bmpFactoryOptions);