Question

我正在尝试以编程方式填充线性布局

LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(
            LayoutParams.WRAP_CONTENT,      
            LayoutParams.WRAP_CONTENT
    );
    params.setMargins(dpToPx(6), 0, 0, 0);
    kac.setLayoutParams(params);
    LinearLay.addView(kac);

我想添加（在每个TextView之后（如kac））像我在xml中那样的水平线

 <View
            android:layout_width="fill_parent"
            android:layout_height="1dip"
            android:background="#B3B3B3" 
             android:padding="10dp"
            />

Answer 1

View v = new View(this);
v.setLayoutParams(new LinearLayout.LayoutParams(
        LayoutParams.MATCH_PARENT,      
        5
));
v.setBackgroundColor(Color.parseColor("#B3B3B3"));

LinearLay.addView(v);

Answer 2

我建议创建一个包含该行的drawable，并将其设置为textview的背景。你会避免不必要的观点。

抽样样本可以是：

<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item>
        <shape android:shape="rectangle">
            <solid android:color="#LINE_COLOR"/>
            <padding
                android:bottom="1dp"
                />
        </shape>
    </item>
    <item>
        <shape android:shape="rectangle">
            <solid android:color="#BACKGROUND_COLOR"/>
        </shape>
    </item>
</layer-list>

您可以通过

进行设置

textView.setBackgroundResource(R.drawable.resource)

Answer 3

编辑*示例：

@Override
protected void onDraw(Canvas canvas) 
{
    //this would draw the textview normally
    super.onDraw(canvas);

    //this would add the line that you wanted to add at the bottom of your view
    //but you would want to create your rect and paint outside of the draw call
    //after onmeasure/onlayout is called so you have proper dimensions
    canvas.drawRect(new Rect(0, this.getHeight()-1, this.getWidth(),  this.getHeight()), mPaint);
}

如果我知道你只想在每个textview之后画一条线，你最好的选择可能就是用自定义类扩展TextView，覆盖onDraw方法，添加一个绘制调用来自己画线

Answer 4

你只需要为你的TextViews设置样式（背景），在这种情况下使视图成为浪费

如何以编程方式在Android中制作水平线

4 个答案: