如何更改布局文件中可绘制形状的颜色
我创造了一个可绘制的圆形形状。我使用它作为我的线性布局的背景。它工作正常。但问题是，我想创建6个不同颜色的圆圈。那么我只能使用一个可绘制的形状并为不同的圆圈改变颜色吗？
这是我的可绘制圆形
<?xml version="1.0" encoding="utf-8"?>
<shape
xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="oval"
>
<solid
android:color="@color/colorPrimary"
/>
<size
android:width="30dp"
android:height="30dp"/>
</shape>
我想使用不同颜色的可绘制圆形创建此布局。
布局：
4 个答案:
答案 0 :(得分：9)
您可以通过将相同的drawable（您提供的那个）设置为所有按钮，然后在您的代码中：
示例：
2016-10-21 21:56:21 [scrapy] INFO: Scrapy 1.1.0 started (bot: crowdfunder_crawl)
2016-10-21 21:56:21 [scrapy] INFO: Overridden settings: {'AJAXCRAWL_ENABLED': True, 'NEWSPIDER_MODULE': 'crowdfunder_crawl.spiders', 'SPIDER_MODULES': ['crowdfunder_crawl.spiders'], 'ROBOTSTXT_OBEY': True, 'BOT_NAME': 'crowdfunder_crawl'}
2016-10-21 21:56:21 [scrapy] INFO: Enabled extensions:
['scrapy.extensions.logstats.LogStats',
'scrapy.extensions.telnet.TelnetConsole',
'scrapy.extensions.corestats.CoreStats']
2016-10-21 21:56:21 [scrapy] INFO: Enabled downloader middlewares:
['scrapy.downloadermiddlewares.robotstxt.RobotsTxtMiddleware',
'scrapy.downloadermiddlewares.httpauth.HttpAuthMiddleware',
'scrapy.downloadermiddlewares.downloadtimeout.DownloadTimeoutMiddleware',
'scrapy.downloadermiddlewares.useragent.UserAgentMiddleware',
'scrapy.downloadermiddlewares.retry.RetryMiddleware',
'scrapy.downloadermiddlewares.defaultheaders.DefaultHeadersMiddleware',
'scrapy.downloadermiddlewares.ajaxcrawl.AjaxCrawlMiddleware',
'scrapy.downloadermiddlewares.redirect.MetaRefreshMiddleware',
'scrapy.downloadermiddlewares.httpcompression.HttpCompressionMiddleware',
'scrapy.downloadermiddlewares.redirect.RedirectMiddleware',
'scrapy.downloadermiddlewares.cookies.CookiesMiddleware',
'scrapy.downloadermiddlewares.chunked.ChunkedTransferMiddleware',
'scrapy.downloadermiddlewares.stats.DownloaderStats']
2016-10-21 21:56:21 [scrapy] INFO: Enabled spider middlewares:
['scrapy.spidermiddlewares.httperror.HttpErrorMiddleware',
'scrapy.spidermiddlewares.offsite.OffsiteMiddleware',
'scrapy.spidermiddlewares.referer.RefererMiddleware',
'scrapy.spidermiddlewares.urllength.UrlLengthMiddleware',
'scrapy.spidermiddlewares.depth.DepthMiddleware']
2016-10-21 21:56:21 [scrapy] INFO: Enabled item pipelines:
[]
2016-10-21 21:56:21 [scrapy] INFO: Spider opened
2016-10-21 21:56:21 [scrapy] INFO: Crawled 0 pages (at 0 pages/min), scraped 0 items (at 0 items/min)
2016-10-21 21:56:21 [scrapy] DEBUG: Telnet console listening on 127.0.0.1:6024
2016-10-21 21:56:21 [scrapy] DEBUG: Crawled (200) <GET https://www.crowdfunder.com/robots.txt> (referer: None)
2016-10-21 21:56:21 [scrapy] DEBUG: Redirecting (301) to <GET http://www.crowdfunder.com/user/login> from <GET https://www.crowdfunder.com/user/login/>
2016-10-21 21:56:22 [scrapy] DEBUG: Redirecting (301) to <GET https://www.crowdfunder.com/user/login> from <GET http://www.crowdfunder.com/user/login>
2016-10-21 21:56:22 [scrapy] DEBUG: Crawled (200) <GET https://www.crowdfunder.com/user/login> (referer: None)
2016-10-21 21:56:23 [scrapy] DEBUG: Crawled (200) <POST https://www.crowdfunder.com/user/signup> (referer: https://www.crowdfunder.com/user/login)
2016-10-21 21:56:23 [crowdfunder] DEBUG: login failed :( :( :(
2016-10-21 21:56:23 [scrapy] INFO: Closing spider (finished)
2016-10-21 21:56:23 [scrapy] INFO: Dumping Scrapy stats:
{'downloader/request_bytes': 1569,
'downloader/request_count': 5,
'downloader/request_method_count/GET': 4,
'downloader/request_method_count/POST': 1,
'downloader/response_bytes': 16313,
'downloader/response_count': 5,
'downloader/response_status_count/200': 3,
'downloader/response_status_count/301': 2,
'finish_reason': 'finished',
'finish_time': datetime.datetime(2016, 10, 22, 4, 56, 23, 232493),
'log_count/DEBUG': 7,
'log_count/INFO': 7,
'request_depth_max': 1,
'response_received_count': 3,
'scheduler/dequeued': 4,
'scheduler/dequeued/memory': 4,
'scheduler/enqueued': 4,
'scheduler/enqueued/memory': 4,
'start_time': datetime.datetime(2016, 10, 22, 4, 56, 21, 180030)}
2016-10-21 21:56:23 [scrapy] INFO: Spider closed (finished)
为每个按钮执行此操作，但请记住将Drawable mDrawable = ContextCompat.getDrawable(context, R.drawable.yourDrawable);
mDrawable.setColorFilter(new PorterDuffColorFilter(yourColorInt,PorterDuff.Mode.MULTIPLY));
final int sdk = android.os.Build.VERSION.SDK_INT;
if(sdk < android.os.Build.VERSION_CODES.JELLY_BEAN) {
yourButton.setBackgroundDrawable(mDrawable);
} else {
yourButton.setBackground(mDrawable);
}
替换为您要应用的按钮所需的颜色。
答案 1 :(得分：3)
虽然@AbAppletic答案很好，但我想添加另一种方法来解决问题。您可以在java中定义圆形视图，然后在xml布局中多次使用此视图，并根据需要更改其颜色。 圆形视图：
import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.util.AttributeSet;
import android.view.View;
public class Circle extends View {
Paint p;
int color ;
public Circle(Context context) {
this(context, null);
}
public Circle(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
public Circle(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
// real work here
TypedArray a = context.getTheme().obtainStyledAttributes(
attrs,
R.styleable.Circle,
0, 0
);
try {
color = a.getColor(R.styleable.Circle_circleColor, 0xff000000);
} finally {
// release the TypedArray so that it can be reused.
a.recycle();
}
init();
}
public void init()
{
p = new Paint();
p.setColor(color);
}
@Override
protected void onDraw(Canvas canvas) {
// TODO Auto-generated method stub
super.onDraw(canvas);
if(canvas!=null)
{
canvas.drawCircle(getHeight()/2, getWidth()/2,getWidth()/2,p );
}
}
}
在attrs.xml中添加这些行：
<declare-styleable name="Circle">
<attr name="circleRadius" format="integer"/>
<attr name="circleColor" format="color" />
</declare-styleable>
然后您可以多次在布局中使用此视图，也可以更改其背景：
<?xml version="1.0" encoding="utf-8"?>
<TableLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:orientation="vertical">
<TableRow android:gravity="center">
<com.afranet.broadbandportal.view.Circle xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/cv"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_margin="5dp"
android:background="@color/colorPrimary"
app:circleColor="@color/color1" />
<com.afranet.broadbandportal.view.Circle xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/cv2"
android:layout_width="120dp"
android:layout_height="120dp"
android:layout_margin="5dp"
android:background="@color/colorPrimary"
app:circleColor="@color/color2" />
</TableRow>
<TableRow android:gravity="center">
<com.afranet.broadbandportal.view.Circle xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/cv3"
android:layout_width="120dp"
android:layout_height="120dp"
android:layout_margin="5dp"
android:background="@color/colorPrimary"
app:circleColor="@color/color3" />
<com.afranet.broadbandportal.view.Circle xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/cv4"
android:layout_width="120dp"
android:layout_height="120dp"
android:layout_margin="5dp"
android:background="@color/colorPrimary"
app:circleColor="@color/color4" />
</TableRow>
<TableRow android:gravity="center">
<com.afranet.broadbandportal.view.Circle xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/cv5"
android:layout_width="120dp"
android:layout_height="120dp"
android:layout_margin="5dp"
android:background="@color/colorPrimary"
app:circleColor="@color/color5" />
<com.afranet.broadbandportal.view.Circle xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/cv6"
android:layout_width="120dp"
android:layout_height="120dp"
android:layout_margin="5dp"
android:background="@color/colorPrimary"
app:circleColor="@color/color6" />
</TableRow>
以下是截图：
答案 2 :(得分：1)
保持相同的形状并应用不同的app:backgroundTint
android:background="@drawable/shape"
app:backgroundTint="@color/blue"
请注意 app:（自定义命名空间）以获取更多信息 Android Layout - when to use app: vs android:?
答案 3 :(得分：0)
您现在可以使用backgroundTint标记更改可绘制形状的颜色（API级别21）
android:backgroundTint="@color/yellow_color"
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