不使用屏幕尺寸,在多窗口上下文中,此方法是invalid。
如果您的网格是固定的 3x3 项目大小,那么请使用自定义布局 ViewGroup,如下所示:(并设置RelativeLayout
项目内容)
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle state) {
setContentView(new ViewGroup(this) {
private RelativeLayout[] items = new RelativeLayout[9];
private int width, height, itemWidth, itemHeight;
{
Random r = new Random();
for (int i = 0; i < 9; i++) {
items[i] = new RelativeLayout(getContext());
float[] hsv = new float[] {360 * r.nextFloat(), .50f, .75f};
items[i].setBackgroundColor(Color.HSVToColor(hsv));
addView(items[i]);
// UPDATE ////////////////////////////////////
ImageView image = new ImageView(getContext());
switch (i) {
case 0: // top left
case 1: // top center
case 2: // top right
case 3: // center left
case 4: // center center
case 5: // center right
case 6: // bottom left
case 7: // bottom center
case 8: // bottom right
image.setImageResource(R.drawable.ic_launcher);
break;
}
image.setScaleType(ScaleType.FIT_XY);
image.setLayoutParams(new RelativeLayout.LayoutParams(
RelativeLayout.LayoutParams.MATCH_PARENT,
RelativeLayout.LayoutParams.MATCH_PARENT
));
items[i].addView(image);
//////////////////////////////////////////////
}
}
@Override
protected void onMeasure(int wMS, int hMS) {
width = MeasureSpec.getSize(wMS);
height = MeasureSpec.getSize(hMS);
itemWidth = width / 3;
itemHeight = height / 3;
wMS = MeasureSpec.makeMeasureSpec(itemWidth, MeasureSpec.EXACTLY);
hMS = MeasureSpec.makeMeasureSpec(itemHeight, MeasureSpec.EXACTLY);
measureChildren(wMS, hMS);
setMeasuredDimension(width, height);
}
@Override
protected void onLayout(boolean changed, int l, int t, int r, int b) {
for (int i = 0; i < 9; i++) {
l = itemWidth * (i % 3);
t = itemHeight * (i / 3);
r = l + itemWidth;
b = t + itemHeight;
items[i].layout(l, t, r, b);
}
}
});
super.onCreate(state);
}
}
EDIT:请参阅我的代码更新,您只需将图像添加到项目容器中即可。使用此方法,不需要 XML 布局文件,因为您可以自行管理内容和大小。
Result :
![result](https://i.stack.imgur.com/DPf4H.png)
EDIT:极简方式:
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle state) {
setContentView(new ViewGroup(this) {
private static final int SIZE_X = 3;
private static final int SIZE_Y = 3;
private ImageView[] items = new ImageView[SIZE_X * SIZE_Y];
private int itemWidth, itemHeight;
{
setBackgroundColor(Color.DKGRAY);
for (int i = 0; i < items.length; i++) {
items[i] = new ImageView(getContext());
items[i].setScaleType(ScaleType.CENTER);
items[i].setImageResource(R.drawable.ic_launcher);
addView(items[i]);
}
}
@Override
protected void onMeasure(int wMS, int hMS) {
int width = MeasureSpec.getSize(wMS);
int height = MeasureSpec.getSize(hMS);
itemWidth = width / SIZE_X;
itemHeight = height / SIZE_Y;
wMS = MeasureSpec.makeMeasureSpec(itemWidth, MeasureSpec.EXACTLY);
hMS = MeasureSpec.makeMeasureSpec(itemHeight, MeasureSpec.EXACTLY);
measureChildren(wMS, hMS);
setMeasuredDimension(width, height);
}
@Override
protected void onLayout(boolean changed, int l, int t, int r, int b) {
for (int i = 0; i < items.length; i++) {
l = itemWidth * (i % SIZE_X);
t = itemHeight * (i / SIZE_X);
r = l + itemWidth;
b = t + itemHeight;
items[i].layout(l, t, r, b);
}
}
});
super.onCreate(state);
}
}
Result :
@坎瓦尔吉特·辛格:
在 MainActivity 项目创建循环中:
final int id = i;
items[i].setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
startActivity(new Intent(getContext(), NextActivity.class).putExtra("id", id));
}
});
在下一个活动中:
int id = getIntent().getIntExtra("id", -1);