Android Development most common examples of finishing----(1) Custom button implementation

Android Development most common examples of finishing----(1) Custom button implementation
First, Activity

Mainactivity.java Source:

public class Mainactivity extends Activity {@Overrideprotected void onCreate (Bundle savedinstancestate) {super.oncreate (savedinstancestate); Setcontentview (R.layout.activity_main);}}

Second, XML layout file

Activity_main.xml Source:

<linearlayout xmlns:android= "http://schemas.android.com/apk/res/android"    android:layout_width= "Match_ Parent "    android:layout_height=" match_parent "    android:orientation=" vertical ">    <button        Android:layout_width= "Wrap_content"        android:layout_height= "wrap_content"        android:background= "@drawable /bg_button "/></linearlayout>

Iii. Related Resources

Files under res/drawable/:

Bg_button.xml Source:

<?xml version= "1.0" encoding= "Utf-8"? ><selector xmlns:android= "http://schemas.android.com/apk/res/ Android ">    <item android:state_focused=" true "android:drawable=" @drawable/bg_button_pressed "></ Item><item android:state_pressed= "true" android:drawable= "@drawable/bg_button_pressed" ></item> <item  android:drawable= "@drawable/bg_button_normal" ></item></selector>

Add: In addition to the state_focused, state_pressed can be set in the state of the style, you can also set state_checked, state_selected and other states.
Bg_button_normal.png:

Bg_button_pressed.png:

Four, the effect

(1) button in the natural state:

(2) Press the button in the state:

The most common examples of Android development----(1) custom button implementations