Question

我试图用四舍五入的玉米(和选择的背景颜色)形成一种看法,我可以再用不同背景的颜色进行再利用;很难解释,因此,我的准则如下:

app/src/com/ Packagename/whatever/CustomDrawableView.java


package com.packagename.whatever;

import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Canvas;
import android.graphics.drawable.PaintDrawable;
import android.util.AttributeSet;
import android.view.View;

public class CustomDrawableView extends View {
    private PaintDrawable mDrawable;
    int radius;

    private void init(AttributeSet attrs) {
        TypedArray a = getContext().obtainStyledAttributes(attrs,R.styleable.RoundedRect);
        radius = a.getInteger(R.styleable.RoundedRect_radius, 0);
    }

    public CustomDrawableView(Context context, AttributeSet attrs) {
        super(context, attrs);
        init(attrs);

        mDrawable = new PaintDrawable();
    }

    protected void onDraw(Canvas canvas) {
        mDrawable.setCornerRadius(radius);
        mDrawable.draw(canvas);
    }
}

Here s the XML to display the custom component: /app/res/layout/test.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:ny="http://schemas.android.com/apk/res/com.packagename.whatever"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:background="#ffffff"
    android:padding="10dp">

    <com.packagename.whatever.CustomDrawableView
        android:id="@+id/custom"
        android:layout_width="200dp"
        android:layout_height="200dp"
        android:background="#b80010"
        ny:radius="50"
    />

</LinearLayout>

I m wanting the red box to have 50px rounded corners, but as you ll see, it does not:

Red box without rounded corners

The idea is that I could easily change the background color in the XML and automatically have a nice View with rounded corners, without having to create multiple drawables.

得到帮助!

Answer 1

你们需要把玉米和彩色带入背景。

这样做是可行的。减去你身边的颜色:背井,然后利用它创造新的可推力,使你掌握在构造中的背景。只要你只打上roid子,就能够工作。

   public CustomDrawableView(Context context, AttributeSet attrs) {
        super(context, attrs);
        init(attrs);

        // pull out the background color
        int color = attrs.getAttributeIntValue("http://schemas.android.com/apk/res/android", "background", 0xffffffff);

        // create a new background drawable, set the color and radius and set it in place
        mDrawable = new PaintDrawable();
        mDrawable.getPaint().setColor(color);
        mDrawable.setCornerRadius(radius);
        setBackgroundDrawable(mDrawable);
    }

如果你凌驾于草场,就确保你首先把眼光叫上超级.onDraw(canvas)。

Answer 2

a. 简单地划分如下:

public ShapeDrawable Sd(int s){

float[] outerR = new float[] { 12, 12, 12, 12, 12, 12, 12, 12 };
ShapeDrawable mDrawable = new ShapeDrawable(new RoundRectShape(outerR, null,null));

            mDrawable.getPaint().setColor(s);
return mDrawable;
}

您可以采取以下行动:

    LinearLayout l=(LinearLayout) findViewById(R.id.testLayout);
l.setBackgroundDrawable(Sd(0xff74AC23));

where the 12 s represent the radius. you could apply this to any view for a background drawable.

Answer 3

探讨这一问题: 我如何利用xml确定一个可装饰的圆顶角?。

And perhaps also these two:

How to add rounded corner to a drawable I m using as a background in Android?
How should I give images rounded corners in Android?

友情链接