你有一个RelativeLayout,并希望显示6个按钮,如“TableLayout”,我计算尺寸按钮,并试图在活动上显示。只显示最后一个按钮。
我在调用方法时尝试使用6个按钮(buttonsperscreen = 6)进行活动。
你能帮帮我吗?代码是:
private void doLayoutWithButtons(int buttonsperscreen) {
// if total butons is % 2 == 0
if (buttonsperscreen % 2 == 0) {
// get display dimensions
DisplayMetrics d = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(d);
int w = d.widthPixels;
int h = d.heightPixels;
// calc size of buttons
int widthButton = w / 2; // only two columns of buttons.
int heightButton = h / ((buttonsperscreen) / 2); // sample 100px /
// (6/2) = 3
int posx = 0;
int posy = 0;
for (int i = 1; i <= buttonsperscreen; i++) {
Button newButton = new Button(this);
newButton.setId(100 + i + 1); // ID of zero will not work
newButton.setText("Botão: " + i);
// atribuindo o tamanho do botão.
newButton.setHeight(heightButton);
newButton.setWidth(widthButton);
newButton.setId(1000 + i);
// positioning buttons...
RelativeLayout layout1 = new RelativeLayout(this);
// set layout with size of button
RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(
widthButton, heightButton);
params.leftMargin = posx;
params.topMargin = posy;
newButton.setLayoutParams(params);
layout1.setLayoutParams(new LayoutParams(
LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));
layout1.addView(newButton);
setContentView(layout1);
// to calc positions x,y for each button for next iteration
if (posx + widthButton < w) {
posx = posx + widthButton;
} else {
posx = 0;
posy = posy + heightButton;
}
}
}
}
由于 马特乌斯
答案 0 :(得分:0)
如果您尝试在屏幕上均匀显示按钮,则无需在代码中执行此操作。您可以在布局中指定这样的内容。
这样的东西会给6个按钮水平显示相等的宽度。
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="fill_parent"
android:layout_height="fill_parent">
<LinearLayout android:layout_width="fill_parent"
android:layout_height="wrap_content" android:orientation="horizontal">
<Button android:layout_height="wrap_content" android:id="@+id/button1"
android:text="Button" android:layout_width="0dp"
android:layout_weight="1" />
<Button android:layout_height="wrap_content" android:id="@+id/button2"
android:text="Button" android:layout_width="0dp"
android:layout_weight="1" />
</LinearLayout>
<LinearLayout android:layout_width="fill_parent"
android:layout_height="wrap_content" android:orientation="horizontal">
<Button android:layout_height="wrap_content" android:id="@+id/button3"
android:text="Button" android:layout_width="0dp"
android:layout_weight="1" />
<Button android:layout_height="wrap_content" android:id="@+id/button4"
android:text="Button" android:layout_width="0dp"
android:layout_weight="1" />
</LinearLayout>
<LinearLayout android:layout_width="fill_parent"
android:layout_height="wrap_content" android:orientation="horizontal">
<Button android:layout_height="wrap_content" android:id="@+id/button5"
android:text="Button" android:layout_width="0dp"
android:layout_weight="1" />
<Button android:layout_height="wrap_content" android:id="@+id/button6"
android:text="Button" android:layout_width="0dp"
android:layout_weight="1" />
</LinearLayout>
</LinearLayout>
只要你将layout_width保持为0dp,并将权重设置为1,Android就会自动将宽度设置为相等,无论你有多少个按钮。