Android的 - 如何编程设置按钮颜色 [英] Android - How to programmatically set button color

问题描述

我是从一个REST API中的一些数据读取，需要根据应用程序接收到的信息来生成一些按钮。

I am reading in some data from a REST api and need to generate some buttons based on the information the app receives.

由于我需要很多的活动画面我已经扩展按钮进行RachelButton相同的按钮和我在构造函数中进行设置。

Because I need the same buttons in many Activity screens I have extended Button to make a RachelButton and I set it up in the constructor.

public RachelButton(Context context, Info info) {
    super(context);
    this.info= info;

    setText(info.getTime());
    setTypeface(Typeface.DEFAULT, Typeface.BOLD);

    int identifier = 0;

    if(info.isAvailable()){
        identifier = getContext().getResources().getIdentifier("drawable/info_button_"+info.getType(), null, getContext().getPackageName());
    }else{
        identifier = R.drawable.info_button_unavailable;
    }

    if(identifier == 0){
        Log.e("INFO_BUTTON", "no button for "+info.getType());
    }

    setBackgroundResource(identifier);
    setTextColor(R.color.info_button_text_color);

    setOnClickListener(new View.OnClickListener(){
        public void onClick(View view) {
            //do stuff
        }
    });
}

然后我使用生成的彩色按钮资源的一个例子是这样的：

Then an example of the resource I am using to generate a colored button is this:

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_pressed="true" >
    <shape>
        <gradient
            android:startColor="@color/button_pressed"
            android:endColor="@color/button_pressed"
            android:angle="270" />
        <stroke
            android:width="3dp"
            android:color="@color/button_pressed" />
        <corners
            android:radius="3dp" />
        <padding
            android:left="5dp"
            android:top="5dp"
            android:right="5dp"
            android:bottom="5dp" />
    </shape>
</item>

<item android:state_focused="true" >
    <shape>
        <gradient
            android:endColor="@color/info_normal"
            android:startColor="@color/info_normal"
            android:angle="270" />
        <stroke
            android:width="3dp"
            android:color="@color/info_normal" />
        <corners
            android:radius="3dp" />
        <padding
            android:left="5dp"
            android:top="5dp"
            android:right="5dp"
            android:bottom="5dp" />
    </shape>
</item>

<item>
    <shape>
        <gradient
            android:endColor="@color/info_normal"
            android:startColor="@color/info_normal"
            android:angle="270" />
        <stroke
            android:width="3dp"
            android:color="@color/info_normal" />
        <corners
            android:radius="3dp" />
        <padding
            android:left="5dp"
            android:top="5dp"
            android:right="5dp"
            android:bottom="5dp" />
    </shape>
</item>
</selector>

正如你可以在code见我设置文本​​颜色，我敢肯定，这种颜色的存在是为资源（谢谢你的IntelliJ）。

As you can see in the code I am setting the text color and I'm sure that this color exists as a resource (thank you IntelliJ).

但设置这样的文字颜色没有效果可言，按钮上的文字颜色似乎是按钮的背景颜色暗的阴影。

But setting the text color like this has no effect at all, the text color on the button seems to be a darker shade of the button's background color.

如果任何人都可以给我一些建议，以什么尝试下一次我会是最AP preciative。

If anyone could give me some advice as to what to try next I would be most appreciative.

推荐答案

您应该做的：

setTextColor(getContext().getResources().getColor(R.color.info_button_text_color));

这篇关于Android的 - 如何编程设置按钮颜色的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！