Android自定义Layout

在开发Android过程中，有时已有的Loyout布局不能完全满足设计需求，这时需要在已有的Layout基础上上进行扩展，以达到通过配置文件描述布局的设计原则。

首先第一一个布局类，重写其onDraw方法。

public static class iRelativeLayout extends RelativeLayout{private PaintmPaint;private RectmRect;public iRelativeLayout( Context context, AttributeSet attrs ) {super(context, attrs);mRect = new Rect();mPaint = new Paint();mPaint.setStyle(Paint.Style.FILL_AND_STROKE);mPaint.setColor(0xFFCBD2D8);}@Overrideprotected void onDraw(Canvas canvas){super.onDraw(canvas);canvas.drawColor(0xFFC5CCD4);this.getDrawingRect(mRect);for (int i = 0; i < mRect.right; i += 7){canvas.drawRect(mRect.left + i, mRect.top, mRect.left + i + 2,mRect.bottom, mPaint);}}}

其次，在布局配置文件中引用：

<?xml version="1.0" encoding="utf-8"?>

class="iRelativeLayout"

android:orientation="vertical"

android:layout_width="fill_parent"

android:layout_height="fill_parent"

android:background = "#C5CCD4FF"

android:id = "@+id/TabLayout_One"

android:layout_width = "fill_parent"

android:layout_height = "fill_parent"

android:layout_above = "@+id/Tabs"

android:layout_width = "fill_parent"

android:layout_height = "fill_parent"

android:visibility = "visible"

android:id = "@+id/ButtonOne"

android:layout_width = "wrap_content"

android:layout_height = "fill_parent"

android:text = "h3h3h3"

android:id = "@+id/ButtonTwo"

android:layout_width = "wrap_content"

android:layout_height = "wrap_content"

android:text = "11222"

android:layout_below ="@+id/ButtonOne"

android:id = "@+id/ButtonThree"

android:layout_width = "wrap_content"

android:layout_height = "wrap_content"

android:text = "wass"

android:layout_below ="@+id/ButtonTwo"

最后，和其他布局一样使用即可。

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