Question

我有一个使用TextViews进行布局的复杂时间表。我看到绝对布局已被折旧。现在我知道这是“糟糕的做法”，但我有一个结构良好的屏幕指标类，它将调整与屏幕尺寸/密度等相关的所有内容。

如果我不能使用绝对布局，那我怎么能告诉TextView我想要它那么多左边和顶部？（比如使用绝对位置的HTML）？

我想以编程方式执行此操作而不使用XML。这是可能的还是我必须使用WebView或画布？

EDIT ::

    void positionView (TextView v, int x, int y, int w, int h){
    final ViewGroup.MarginLayoutParams lpt = new ViewGroup.MarginLayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);//v.getLayoutParams();
    //lpt.setMargins(x,y,x+w,y+h);
    lpt.height=h;
    lpt.width=w;
    lpt.topMargin=y;
    lpt.leftMargin=x;
    v.setLayoutParams(lpt);

}

这是我通过这个快速测试代码调用的方法：

        ScrollView dayViewContainer = new ScrollView(context);
    dayViewContainer.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));
    FrameLayout dayView = new FrameLayout(context);
    dayView.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));
    dayView.setBackgroundColor(0xFF00FF00)
    int lineHeight = 60;

    for(int i =0;i<11 ;i++){
        TextView hourView = new TextView(context);
        hourView.setText(""+i+":00");
         BrScreenMetrics.getScreenWidthPX()-20, lineHeight);
        positionView(hourView, 50, i*lineHeight, BrScreenMetrics.getScreenWidthPX()-20, lineHeight);
        dayView.addView(hourView);
        }

    dayViewContainer.addView(dayView);
    addView(dayViewContainer);

Answer 1

是的，您可以使用以下代码以编程方式执行此操作..

TextView title = ((TextView)findViewById(R.id.default_panel_title))
final ViewGroup.MarginLayoutParams lpt =(MarginLayoutParams)title.getLayoutParams();

lpt.setMargins(0,lpt.topMargin,lpt.rightMargin,lpt.bottomMargin);

title.setLayoutParams(lpt);

Answer 2

好了整整24小时的头疼后，我终于找到了自己和其他人的答案：D 感谢大家，您的意见肯定让我朝着正确的方向前进！

基本上，framelayout中的边距不能正常工作，除非我遗漏了一些东西。所以我所做的就是扩展一个完全展开的线性布局，并在其中包含所需的视图。

例如：

public class BrPositionableTextView extends LinearLayout{

TextView text ;

public BrPositionableTextView(Context context, int x, int y, int w, int h) {
    super(context);

    setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));
    text = new TextView(context);
    text.setHeight(h);
    text.setGravity(Gravity.CENTER_VERTICAL); 
    LayoutParams params = new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
    params.setMargins(x, y, 0, 0);
    params.height = h;
    params.width = w;
    addView(text, params);
}

/**
 * @return the text
 */
public String getText() {
    return text.getText().toString();
}

/**
 * @param text the text to set
 */
public void setText(String text) {
    this.text.setText(text);
}

public void setMargins(int x, int y, int w, int h) {
    //not tested, may need to recreate textview...
    LayoutParams params = new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
    params.setMargins(x, y, x+w, y+h);
    text.setLayoutParams(params);
}

public void setBackgroundColor(int color)
{
    text.setBackgroundColor(color);
}

}

然后可以将其添加到FrameLayout并将视图显示在正确的位置。

示例：

        ScrollView dayViewContainer = new ScrollView(context);
    dayViewContainer.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));
    FrameLayout dayView = new FrameLayout(context);
    dayView.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));
    dayView.setBackgroundColor(0xFF005000);
    dayView.setMinimumHeight(BrScreenMetrics.getScreenHeightMinusStatusBar());
    dayView.setMinimumWidth(BrScreenMetrics.getScreenWidthPX());
    int lineHeight = 60;

    for(int i =0;i<11 ;i++){
        BrPositionableTextView hourView = new BrPositionableTextView(
                context, 
                8, 
                i*lineHeight, 
                80, 
                lineHeight);

        hourView.setText(""+(i+7)+":00");

        dayView.addView(hourView);
        BrPositionableSeparator separator = new BrPositionableSeparator(
                context, 
                80, 
                (i*lineHeight)+((int)(lineHeight*0.5f)), 
                BrScreenMetrics.getScreenWidthPX()-117, 
                1);

        separator.setColor(0xFFFFFFFF);
        dayView.addView(separator);

    }
    BrPositionableTextView bigassBox= new BrPositionableTextView(context, 100,200,300,500);
    bigassBox.setBackgroundColor(0xFF0000FF);
    dayView.addView(bigassBox);

    dayViewContainer.addView(dayView);
    addView(dayViewContainer);
}

android绝对布局

2 个答案: