我正在使用using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Threading;
using System.Drawing;
namespace test
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
DateTime dtStart = DateTime.Now;
Bitmap pic = new Bitmap("test.jpg");
Bitmap returnImg = new Bitmap(pic.Width, pic.Height);
Graphics g = Graphics.FromImage(pic);
Color clr;
int[] argb = new int[4];
for (int i = 0; i < pic.Width; i++) // pic.Width = 50
{
for (int k = 0; k < pic.Height; k++) // pic.Height = 50
{
clr = pic.GetPixel(i, k);
argb[0] = clr.A;
argb[1] = clr.R;
argb[2] = clr.G;
argb[3] = clr.B;
new Thread(() =>
{
if (k < 50)
{
//HERE IS THE PROBLEM, INTEGER K STILL GETS THE VALUE 50 ASSIGNED TO IT.
g.DrawImage(new Bitmap(getBestPic(argb)), new Point(i, k));
}
}).Start();
}
}
returnImg = new Bitmap(pic.Width, pic.Height, g);
returnImg.Save("createdImage.jpg");
}
//Get picture that is best suited to replace pixel
private string getBestPic(int[] argb)
{
int numOfpics = 5;
int[] currentBest = new int[2];
currentBest[0] = 255;
currentBest[1] = 150;
for (int i = 0; i < numOfpics; i++)
{
int compare = compareARGB(getAverageRGB(new Bitmap((i + 1).ToString()+".jpg")), argb);
if (compare < currentBest[0])
{
currentBest[0] = compare;
currentBest[1] = i + 1;
}
}
return currentBest[1].ToString() + ".jpg";
}
// smaller the value, closer the camparison
private int compareARGB(int[] one, int[] two)
{
int [] tmp = new int[4];
tmp[0] = Convert.ToInt32(Math.Abs(one[0] - two[0]));
tmp[1] = Convert.ToInt32(Math.Abs(one[1] - two[1]));
tmp[2] = Convert.ToInt32(Math.Abs(one[2] - two[2]));
tmp[3] = Convert.ToInt32(Math.Abs(one[3] - two[3]));
return (tmp[0] + tmp[1] + tmp[2] + tmp[3]);
}
//return int arry with size 4 contaning the argb values
private int[] getAverageRGB(Bitmap img)
{
Color clr;
int aplha = 0;
int red = 0;
int green = 0;
int blue = 0;
for (int i = 0; i < img.Width; i++)
{
for (int k = 0; k < img.Height; k++)
{
clr = img.GetPixel(i, k);
aplha += clr.A;
red += clr.R;
green += clr.G;
blue += clr.B;
}
}
aplha = aplha / (img.Width * img.Height);
red = red / (img.Width * img.Height);
green = green / (img.Width * img.Height);
blue = blue / (img.Width * img.Height);
int[] re = new int[] {aplha,red,green,blue};
return re;
}
}
}
和RecyclerView，其中显示StaggeredGridLayoutManager，CardView和ImageView。图像应该是方形的，所以在布局资源文件中我设置TextView，现在我需要将高度设置为等于此宽度。我尝试在android:layout_width="match_parent"中执行此操作，在Adapter方法中扩展RecyclerView.Adapter，但getMeasuredWidth始终返回0.我在活动 {中设置适配器到RecyclerView {1}}方法。我怎么能这样做？
答案 0 :(得分：0)
我认为在onResume方法完成时就是这种情况，图像未在UI屏幕上设置，因为它会花费时间。
位图异步框架可能对您有所帮助，例如xutils或[UniversalImageLoader][1]。您可以在完全下载位图时进行缩放，也可以从服务器获取图像宽度，也可能有其他解决方案。