java - 如何随机化 TextView 的重力 - Android Eclipse

Question

正如标题所说，我想随机化布局中文本的重力(我已经能够随机化文本的颜色和文本大小) 以下代码被绑定(bind)到一个 onclicklistener :

        if (check.contains("WTF")) {
                    Random crazy = new Random();
                    display.setText("WTF!!!1!");
                    display.setTextSize(crazy.nextInt(30));
                    display.setTextColor(Color.rgb(crazy.nextInt(256),crazy.nextInt(256),crazy.nextInt(256)));
                    display.setGravity(Gravity.CENTER);
                }

还有几个 else if 和 else 语句，但我认为包括它们与问题无关。

Answer 1

你可以使用 Random类(也)做到这一点。

例子:

int[] gravities = new int[4];
gravities[0] = Gravity.BOTTOM;
gravities[1] = Gravity.TOP;
gravities[2] = Gravity.LEFT;
gravities[3] = Gravity.RIGHT;

if (check.contains("WTF")) {
    Random random = new Random();
    display.setText("WTF!!!1!");
    display.setTextSize(random .nextInt(30));
    display.setTextColor(Color.rgb(random.nextInt(256),
                                  random.nextInt(256),
                                  random.nextInt(256)));
    //from 0 to gravities.length get a random number
    int randomIndex = random.nextInt(gravities.length);
    //which will be some random gravity constant
    int randomGravity = gravities[randomIndex];
    display.setGravity(randomGravity);
}