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AlertDialog上的线程(Thread on AlertDialog)

 我创建了从AlertDialog继承的类。 此类启动线程，通过Internet检查某些值（长操作时间）。 该对话框有单个按钮（POSITIVE_BUTTON）。 应该禁用此按钮，直到线程结束。 但我不知道如何从线程启用此按钮。  
 我的代码：  
public MyDialog(Context context) {
    super(context);
    View view = getLayoutInflater().inflate(R.layout.dialog, null);
    setView(view);

    getButton(BUTTON_POSITIVE).setEnabled(false);

    new Thread(new Runnable() {
        public void run() {
            // Long operation time code
            getButton(BUTTON_POSITIVE).setEnabled(true); // CRASH!!!
        }
    }).start();    
}
 
 错误说我从另一个线程更改了视图。 我不能使用runOnUIThread方法，因为它不会在AlertDialog中退出。 我该怎么办？ 

I created class that inheritance from AlertDialog. This class start thread that check some value over the internet (long operation time). The dialog have single button (POSITIVE_BUTTON). this button should be disable until the thread will end. But I don't know how to make this button enabled from the thread. 
My code: 
public MyDialog(Context context) {
    super(context);
    View view = getLayoutInflater().inflate(R.layout.dialog, null);
    setView(view);

    getButton(BUTTON_POSITIVE).setEnabled(false);

    new Thread(new Runnable() {
        public void run() {
            // Long operation time code
            getButton(BUTTON_POSITIVE).setEnabled(true); // CRASH!!!
        }
    }).start();    
}
 
The error says that I change view from another thread. And I can't use the runOnUIThread method because it not exits in AlertDialog. What should I do?

原文：https://stackoverflow.com/questions/17113265

更新时间：2023-10-01 06:10

最满意答案

 colsep参数采用数字向量，指示列是否应该用颜色空间分隔。 从文档：  
(optional) vector of integers indicating which columns or rows should be separated from the preceding columns or rows by a narrow space of color sepcolor
 
 在您的示例中，这将是这样的：  
heatmap.2(as.matrix(order_by27_T[rowsToDraw,]), colsep=1:5,
     sepcolor=c("red", "blue"), ....)
 
 这会将第1列与第5列分开，颜色为red和blue  
 
 如果你只想指定一个自定义调色板（不是你要求的），这里有一些代码：  
full = matrix(runif(100, -5, 5), ncol= 10)
my_p = colorRampPalette(c("white","pink","green"))
breaks = c(seq(min(full), 0, length.out=128),
           seq(0, max(full), length.out=128))
heatmap.2(full, dendrogram="row", Colv=FALSE,
          col=my_p, key=TRUE, 
          breaks=breaks, symkey=FALSE, density.info="none",
          trace="none", cexRow=0.5, cexCol=0.75)

The colsep argument takes a vector of numbers indicating whether the columns should be separated by a space of colour. From the documentation: 
(optional) vector of integers indicating which columns or rows should be separated from the preceding columns or rows by a narrow space of color sepcolor
 
In your example, this would be something like: 
heatmap.2(as.matrix(order_by27_T[rowsToDraw,]), colsep=1:5,
     sepcolor=c("red", "blue"), ....)
 
This would separate columns 1 to 5 with the colours red and blue 
 
Just in case you only want to specify a custom palette (not what you asked for), here is some code: 
full = matrix(runif(100, -5, 5), ncol= 10)
my_p = colorRampPalette(c("white","pink","green"))
breaks = c(seq(min(full), 0, length.out=128),
           seq(0, max(full), length.out=128))
heatmap.2(full, dendrogram="row", Colv=FALSE,
          col=my_p, key=TRUE, 
          breaks=breaks, symkey=FALSE, density.info="none",
          trace="none", cexRow=0.5, cexCol=0.75)

AlertDialog上的线程(Thread on AlertDialog)

最满意答案

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