Android 系统初始值修改

在4.1上修改默认字体大小：

比如改成大：

def_font_scale">115%

11. 修改
浏览器的默认标签

分别在一下资源文件中添加自定义的标签

packages\apps\Browser\res\values\strings.xml

Google
http://www.google.com/
Picasa
http://picasaweb.google.com/
Yahoo!
http://www.yahoo.com/
MSN
http://www.msn.com/
Twitter
http://twitter.com/
Facebook
http://www.facebook.com/
Wikipedia
http://www.wikipedia.org/
eBay
http://www.ebay.com/
CNN
http://www.cnn.com/
NY Times
http://www.nytimes.com/
ESPN
http://espn.com/
Amazon
http://www.amazon.com/
Weather Channel
http://www.weather.com/
BBC
http://www.bbc.co.uk/
packages\apps\Browser\res\values\bookmarks_icons.xml ，

注意：这里每个网站对应一个缩略图和一个favicon

@raw/favicon_google

@raw/thumb_google

@raw/favicon_picasa

@raw/thumb_picasa

@raw/favicon_yahoo

@raw/thumb_yahoo

@raw/favicon_msn

@raw/thumb_msn

@raw/favicon_twitter

@raw/thumb_twitter

@raw/favicon_facebook

@raw/thumb_facebook

@raw/favicon_wikipedia

@raw/thumb_wikipedia

@raw/favicon_ebay

@raw/thumb_ebay

@raw/favicon_cnn

@raw/thumb_cnn

@raw/favicon_nytimes

@raw/thumb_nytimes

@raw/favicon_espn

@raw/thumb_espn

@raw/favicon_amazon

@raw/thumb_amazon

@raw/favicon_weatherchannel

@raw/thumb_weatherchannel

@raw/favicon_bbc

@raw/thumb_bbc

对应的图片在
packages\apps\Browser\res\raw

4.2 LockScreen
解锁界面四个方向添加一个setting入口

frameworks\base\core\res\res\values/arrays.xml

@drawable/ic_lockscreen_unlock

@drawable/ic_action_assist_generic

@drawable/ic_lockscreen_camera

@drawable/ic_lockscreen_settings

在 frameworks\base\core\res\res\drawable 增加
ic_lockscreen_settings.xml 文件 并添加 ic_lockscreen_settings_normal.phg
ic_lockscreen_settings_activated.png 资源文件
http://schemas.android.com/apk/res/android">
android:state_enabled="true"

android:state_active="false"

android:state_focused="false"

android:drawable="@drawable/ic_lockscreen_settings_normal"
/>

android:state_enabled="true"

android:state_active="true"

android:state_focused="false"

android:drawable="@drawable/ic_lockscreen_settings_activated"
/>

android:state_enabled="true"

android:state_active="false"

android:state_focused="true"

android:drawable="@drawable/ic_lockscreen_settings_activated"
/>

frameworks\base\policy\src\com\android\internal\policy\impl\LockScreen.java

public void
onTrigger(View v, int target) {

final int
resId = mGlowPadView.getResourceIdForTarget(target);

switch
(resId) {

case
com.android.internal.R.drawable.ic_lockscreen_settings:
//启动setting 应用

launchActivity(new Intent().setComponent(new
ComponentName("com.android.settings","com.android.settings.Settings")));

mCallback.pokeWakelock();

break;

frameworks/base/media/java/android/media/AudioService.java

private final int[] MAX_STREAM_VOLUME = new int[] {

5, // STREAM_VOICE_CALL

7, // STREAM_SYSTEM

7, // STREAM_RING

15, // STREAM_MUSIC

7, // STREAM_ALARM

7, // STREAM_NOTIFICATION

15, // STREAM_BLUETOOTH_SCO

7, //
STREAM_SYSTEM_ENFORCED

15, // STREAM_DTMF

15 // STREAM_TTS

};

frameworks/base/media/java/android/media/AudioManager.java

public static final int[]
DEFAULT_STREAM_VOLUME = new int[] {

4, // STREAM_VOICE_CALL

7, // STREAM_SYSTEM

5, // STREAM_RING

11, // STREAM_MUSIC

6, // STREAM_ALARM

5, // STREAM_NOTIFICATION

7, // STREAM_BLUETOOTH_SCO

7, //
STREAM_SYSTEM_ENFORCED

11, // STREAM_DTMF

11 // STREAM_TTS

};