自定义Button 直接设置selector

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Custom button that can implement click effect don't need create a selector.xml

How To Use

0. create res/values/attrs.xml add code

<?xml version="1.0" encoding="utf-8"?><resources><declare-styleable name="SelectorButton"><attr name="normal_drawable" format="reference" /><attr name="pressed_drawable" format="reference" /></declare-styleable></resources>

1.Create a class SeletorButton to extends Button

package com.example.mybutton;import android.content.Context;import android.content.res.TypedArray;import android.graphics.drawable.Drawable;import android.graphics.drawable.StateListDrawable;import android.util.AttributeSet;import android.widget.Button;public class SelectorButton extends Button {    public SelectorButton(Context context) {        super(context);    }    public SelectorButton(Context context, AttributeSet attrs, int defStyle) {        super(context, attrs, defStyle);    }    /**     * zyh:normal_drawable="@drawable/btn_login_normal" zyh:pressed_drawable="@drawable/btn_login_pressed"     * @param context     * @param attrs     */    public SelectorButton(Context context, AttributeSet attrs) {        super(context, attrs);        StateListDrawable seletor = new StateListDrawable();// 背景选择器        Drawable n = null;        Drawable p = null;        TypedArray array = context.obtainStyledAttributes(attrs, R.styleable.SelectorButton);        int count = array.getIndexCount();// 获取属性个数        System.out.println("count:" + count);        for (int i = 0; i < count; i++) {            int index = array.getIndex(i);            System.out.println("index:" + index);            System.out.println("draw:" + array.getDrawable(index));            switch (index) {                case R.styleable.SelectorButton_normal_drawable:                    n = array.getDrawable(index);                    break;                case R.styleable.SelectorButton_pressed_drawable:                    p = array.getDrawable(index);                    break;            }        }        seletor.addState(new int[] { android.R.attr.state_pressed }, p);        seletor.addState(new int[] { android.R.attr.state_focused }, p);        seletor.addState(new int[] {}, n);        this.setBackgroundDrawable(seletor);        array.recycle();    }}

2. use in xml

<!-- First you should define a namespace --!> xmlns:zyh="http://schemas.android.com/apk/res/com.example.mybutton"<!--use SelectorButton--!> <com.example.mybutton.SelectorButton        android:id="@+id/btn"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="button"        zyh:normal_drawable="@drawable/exam_list_bg_default"        zyh:pressed_drawable="@drawable/exam_list_bg_pressed" />

example: main.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    xmlns:zyh="http://schemas.android.com/apk/res/com.example.mybutton"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:paddingBottom="@dimen/activity_vertical_margin"    android:paddingLeft="@dimen/activity_horizontal_margin"    android:paddingRight="@dimen/activity_horizontal_margin"    android:paddingTop="@dimen/activity_vertical_margin"    tools:context="com.example.mybutton.MainActivity" >    <com.example.mybutton.SelectorButton        android:id="@+id/btn"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="button"        zyh:normal_drawable="@drawable/exam_list_bg_default"        zyh:pressed_drawable="@drawable/exam_list_bg_pressed" /></RelativeLayout>

3. use in code.java

SelectorButton mButton = findViewById(R.id.button);Drawable normalDrawable = getResources().getDrawable(R.drawable.btn_normal);Drawable pressedDrawable = getResources().getDrawable(R.drawable.btn_pressed);mButton.setSelecorDrawable(normalDrawable, pressedDrawable);

源码下载：https://github.com/18236887539/SelectorButton

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