<?xml version="1.0" encoding="utf-8"?>
<resources>
 <style name="MyText" parent="@android:style/TextAppearance">
   <item name="android:textColor">#987456</item>
 <item name="android:textSize">24sp</item>
 </style>
</resources>

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

<EditText
 android:id="@+id/myEditText"
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 style="@style/MyText"
 android:text="测试一下下"/>
</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<resources>
 <style name="MyText" parent="@android:style/TextAppearance">
 <item name="android:textColor">#987456</item>
 <item name="android:textSize">24sp</item>
 </style>
 <style parent="@android:style/Theme" name="CustomTheme">
 <item name="android:windowNoTitle">true</item>
 <item name="android:windowFrame">@drawable/icon</item>
 <item name="android:windowBackground">?android:windowFrame</item>
</style>
</resources>

<application android:icon="@drawable/icon" android:label="@string/app_name"
 android:theme="@style/CustomTheme">
<activity android:name=".TestStyle"
 android:label="@string/app_name">
<intent-filter>
 <action android:name="android.intent.action.MAIN" />
 <category android:name="android.intent.category.LAUNCHER" />
 </intent-filter>
</activity>

package com.test.shang;
import android.app.Activity;
import android.os.Bundle;
public class TestStyle extends Activity {
 @Override
 protected void onCreate (Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setTheme(R.style.CustomTheme);
 setContentView(R.layout.test_style);
 }
}