本文实例讲述了Android开发实现切换主题及换肤功能。分享给大家供大家参考，具体如下：
废话不说先看效果：
创建ColorTheme类用于主题更换：
public class ColorTheme {
AppCompatActivity ap;
public ColorTheme(AppCompatActivity _ap){ap=_ap;}
public void updateTheme(int _data){
String data=Integer.toString(_data);
FileOutputStream out=null;
BufferedWriter writer=null;
try{
out=ap.openFileOutput("data",Context.MODE_PRIVATE);
writer=new BufferedWriter(new OutputStreamWriter(out));
writer.write(data);
}catch (IOException e){
e.printStackTrace();
}finally {
try {
if(writer!=null){
writer.close();
}
}catch (IOException e){
e.printStackTrace();
}
}
}
public void loadTheme(){
FileInputStream in=null;
BufferedReader reader= null;
StringBuilder content=new StringBuilder();
try{
in=ap.openFileInput("data");
reader=new BufferedReader(new InputStreamReader(in));
String line="";
while((line=reader.readLine())!=null){
content.append(line);
}
ap.setTheme(Integer.parseInt(content.toString()));
}catch (IOException e){
e.printStackTrace();
}finally {
if(reader!=null){
try{
reader.close();
}catch (IOException e){
e.printStackTrace();
}
}
}
}
}
在oncreate中调用：
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
final ColorTheme newTheme = new ColorTheme(this);
newTheme.loadTheme();
setContentView(R.layout.activity_main);
重点：
要现在res/value/style中设计主题的样式：
这里是我设的的四种样式：
<?xml version="1.0"?>
<resources>
<!-- Base application theme. -->
-<style parent="Theme.AppCompat.Light.NoActionBar" name="AppTheme">
<!-- Customize your theme here. -->
<item name="colorPrimary">@color/colorPrimary</item>
<item name="colorPrimaryDark">@color/colorPrimaryDark</item>
<item name="colorAccent">@color/colorAccent</item>
<item name="colorButtonNormal">@color/colorAccent</item>
</style>
-<style parent="Theme.AppCompat.Light.NoActionBar" name="Blue">
<!-- Customize your theme here. -->
<item name="colorPrimary">@color/blue</item>
<item name="colorPrimaryDark">@color/blue</item>
<item name="colorAccent">@color/blue</item>
<item name="colorButtonNormal">@color/blue</item>
</style>
-<style parent="Theme.AppCompat.Light.NoActionBar" name="Pink">
<!-- Customize your theme here. -->
<item name="colorPrimary">@color/pink</item>
<item name="colorPrimaryDark">@color/pink</item>
<item name="colorAccent">@color/pink</item>
<item name="colorButtonNormal">@color/pink</item>
</style>
-<style parent="Theme.AppCompat.Light.NoActionBar" name="Turquoise">
<!-- Customize your theme here. -->
<item name="colorPrimary">@color/turquoise</item>
<item name="colorPrimaryDark">@color/turquoise</item>
<item name="colorAccent">@color/turquoise</item>
<item name="colorButtonNormal">@color/turquoise</item>
</style>
</resources>
别忘了在color里定义的颜色：
<?xml version="1.0" encoding="UTF-8"?>
<resources>
<color name="colorText">#ffffffff</color>
<color name="hintText">#bfffffff</color>
<color name="colorPrimary">#de4037</color>
<color name="colorPrimaryDark">#de4037</color>
<color name="colorAccent">#de4037</color>
<!--注册界面提示红色-->
<color name="hintRed">#de4037</color>
<color name="blue">#1e50a2</color>
<color name="pink">#fa7299</color>
<color name="turquoise">#008577</color>
</resources>
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希望本文所述对大家Android程序设计有所帮助。
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