java – 不明白如何使用GridLayout.spec()

这个GridLayout在我的应用程序中有很多级别.每个级别都有不同的行数和列数.我认为这个GridLayout是我用来满足我需求的最佳选择.此外,所有这些都需要在运行时以编程方式完成.

我无法理解如何使用GridLayout.spec().我试图遵循this excellent example,但却无法完全掌握它.比方说,我想要一个包含3列和4行的GridLayout.

GridLayout.LayoutParms params1 = new GridLayout.Layout(rowSpec, columnSpec);  //what's parameters?

gameplayGridLayout.setColumnCount(3);
gameplayGridLayout.setRowCount(4);

puzzle.addView(gameplayGridLayout, params1);

在我上面的链接示例中,他使用下面的代码来设置“规格”.

Spec row1 = GridLayout.spec(0, 2);
Spec row2 = GridLayout.spec(2);
Spec row3 = GridLayout.spec(3);
Spec row4 = GridLayout.spec(4, 2);

Spec col0 = GridLayout.spec(0);
Spec col1 = GridLayout.spec(1); 
Spec colspan2 = GridLayout.spec(0, 2);

我也不了解这些变量的参数.我试过阅读文档,但它没有给我任何清晰度.有人可以帮助我使用3×4 GridLayout的示例代码,这也有助于解释规范是什么？

解决方法:

我并不完全理解您的问题,但这里有一些解释语法的示例：

Spec row1 = GridLayout.spec(0, 2); //here you set row to be first row and it takes 2 cells in height.

Spec row2  = GridLayout.spec(2); //this row goes under row1 and it takes 1 cell(default size = 1) 

等等.

Spec col0 = GridLayout.spec(0); //same here - first column, width = 1 cell.

Spec colspan2 = GridLayout.spec(0, 2);

所以你可以这样做：

Spec row1 = GridLayout.spec(0);
Spec row2 = GridLayout.spec(1);
Spec row3 = GridLayout.spec(2);
Spec row4 = GridLayout.spec(3);

Spec col0 = GridLayout.spec(0);
Spec col1 = GridLayout.spec(1); 
Spec col2 = GridLayout.spec(2);

GridLayout gridLayout = new GridLayout(this);
GridLayout.LayoutParams first = new GridLayout.LayoutParams(row1, col0);
/*Here you can set options for first cell which is in first row and first column.*/
first.width = screenWidth;
first.height = quarterScreenWidth * 2;
twoByTwo1.setLayoutParams(first);
twoByTwo1.setGravity(Gravity.CENTER);
twoByTwo1.setBackgroundColor(Color.RED);
twoByTwo1.setText("TOP");
twoByTwo1.setTextAppearance(this, android.R.style.TextAppearance_Large);
gridLayout.addView(twoByTwo1, first)
//You can set all cells like above.

我希望这有帮助.

标签：grid-layout,android,java,specifications
来源： https://codeday.me/bug/20190930/1836928.html