Android的如何通过编程设置按键行程和半径 [英] Android how to programmatically set Button stroke and radius

问题描述

我有48 按钮这一活动，用户可以触摸和更改文字和背景颜色。

I have this activity with 48 Button that the user can touch and change text and background color.

我已经编辑默认按钮的样式像这样

但是，当用户改变背景颜色，我有这种坏的结果

这是XML的那种风格的dafault 按钮

These are the xmls that style the dafault Buttons

buttons.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">

    <item android:drawable="@drawable/button_pressed"
        android:state_pressed="true" />

    <item android:drawable="@drawable/button_focused"
        android:state_focused="true" />

    <item android:drawable="@drawable/button_default" />

</selector>

button_default.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle" >
    <corners
        android:radius="100dp"
        />
    <solid
        android:color="#FFFFFF"
        />
    <padding
        android:left="0dp"
        android:top="0dp"
        android:right="0dp"
        android:bottom="0dp"
        />
    <stroke
        android:width="3dp"
        android:color="#787878"
        />
</shape>

在其他XML只更改颜色，所以我尽量避免张贴他们。
这里是code，它编程方式更改按钮。
我从 DB 一切都改变了按钮保存 ID 和设置按钮的颜色。

In the other xml change only the color so i avoid to post them. And here is the code that change the Buttonprogrammatically. I take from DB all changed Button saved with ID and set the color of the Button.

   //Get all materie inside database
    List<Materia> materia = db.getAllMaterie();
    //change all TextView inputed from user
    if(materia.isEmpty()){
        //do nothing
    }else {
        for (Materia mat : materia) {
            //Change all the Button with values stored inside the database
            int resId = getResources().getIdentifier(mat.getID(), "id", getPackageName());
            final Button changedButton = (Button) findViewById(resId);
            changedButton.setText(mat.getMateria());
            changedButton.setTypeface(null, Typeface.BOLD);
            changedButton.setBackgroundColor(mat.getColor());

        }
    }

但我失去半径和中风财产。
有一些方法来设置他们编程？
其他的建议被接受！

推荐答案

我的问题解决了这一行code的

I solved the problem with this line of code

changedButton.getBackground().setColorFilter(mat.getColor(), PorterDuff.Mode.MULTIPLY);

而不是

changedButton.setBackgroundColor(mat.getColor());

我找回了我的默认按钮与背景的getBackground（）后，我设定的色彩搭配 setColorFilter（INT，模式）;

I get back the background of the my default Button with getBackground() and after i set the color with setColorFilter(int, mode);

所以结果成为

//Get all materie inside database
    List<Materia> materia = db.getAllMaterie();
    //change all TextView inputed from user
    if(materia.isEmpty()){
        //do nothing
    }else {
        for (Materia mat : materia) {
            //Change all the Button with values stored inside the database
            int resId = getResources().getIdentifier(mat.getID(), "id", getPackageName());
            final Button changedButton = (Button) findViewById(resId);
            changedButton.setText(mat.getMateria());
            changedButton.setTypeface(null, Typeface.BOLD);
            changedButton.getBackground().setColorFilter(mat.getColor(), PorterDuff.Mode.MULTIPLY);

        }
    }

这篇关于Android的如何通过编程设置按键行程和半径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！