CONFIG_FONT_SCALE
CONFIG_MCC
CONFIG_MNC
CONFIG_LOCALE
CONFIG_TOUCHSCREEN
CONFIG_KEYBOARD
CONFIG_NAVIGATION
CONFIG_ORIENTATION
设置方法:将下列字段用“|”符号分隔开,例如:“locale|navigation|orientation
”
Value Description
“mcc“ The IMSI mobile country code (MCC) has changed — that is, a SIM hasbeen detected and updated the MCC.移动国家号码,由三位数字组成,每个国家都有自己独立的MCC,可以识别手机用户所属国家。
“mnc“ The IMSI mobile network code (MNC) has changed — that is, a SIM hasbeen detected and updated the MNC.移动网号,在一个国家或者地区中,用于区分手机用户的服务商。
“locale“ The locale has changed — for example, the user has selected a new language that text should be displayed in.用户所在地区发生变化。
“touchscreen“ The touchscreen has changed. (This should never normally happen.)
“keyboard“ The keyboard type has changed — for example, the user has plugged in an external keyboard.键盘模式发生变化,例如:用户接入外部键盘输入。
“keyboardHidden“ The keyboard accessibility has changed — for example, the user has slid the keyboard out to expose it.用户打开手机硬件键盘
“navigation“ The navigation type has changed. (This should never normally happen.)
“orientation“ The screen orientation has changed — that is, the user has rotated the device.设备旋转,横向显示和竖向显示模式切换。
“fontScale“ The font scaling factor has changed — that is, the user has selected a new global font size.全局字体大小缩放发生改变
通过一个例子介绍这个属性的用法: 首先需要修改项目的manifest:
?View Code XML
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.androidres.ConfigChangedTesting"
android:versionCode="1"
android:versionName="1.0.0">
<application android:icon="@drawable/icon" android:label="@string/app_name">
<activity android:name=".ConfigChangedTesting"
android:label="@string/app_name"
android:configChanges="keyboardHidden|orientation">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
在Activity中添加了 android:configChanges属性,目的是当所指定属性(Configuration Changes)发生改变时,通知程序调用 onConfigurationChanged()函数。 创建一个Layout UI:
?View Code XML
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<Button
android:id="@+id/pick"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Pick"
/>
<Button
android:id="@+id/view"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="View"
/>
</LinearLayout>
这个简单的UI包含两个按钮,其中一个是通过Contact列表选择一个联系人,另外一个是查看当前选择联系人的详细内容
项目的Java源代码:
import android.app.Activity; import android.content.Intent; import android.content.res.Configuration; import android.net.Uri; import android.os.Bundle; import android.provider.Contacts.People; import android.view.View; import android.widget.Button; public class ConfigChangedTesting extends Activity { /** Called when the activity is first created. */ static final int PICK_REQUEST = 1337; Button viewButton=null; Uri contact = null; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); //setContentView(R.layout.main); setupViews(); } public void onConfigurationChanged(Configuration newConfig) { super.onConfigurationChanged(newConfig); setupViews(); } /* (non-Javadoc) * @see android.app.Activity#onActivityResult(int, int, android.content.Intent) */ @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { // TODO Auto-generated method stub //super.onActivityResult(requestCode, resultCode, data); if(requestCode == PICK_REQUEST){ if(resultCode==RESULT_OK){ contact = data.getData(); viewButton.setEnabled(true); } } } private void setupViews(){ setContentView(R.layout.main); Button pickBtn = (Button)findViewById(R.id.pick); pickBtn.setOnClickListener(new View.OnClickListener(){ public void onClick(View v) { // TODO Auto-generated method stub Intent i=new Intent(Intent.ACTION_PICK,People.CONTENT_URI); startActivityForResult(i,PICK_REQUEST); } }); viewButton =(Button)findViewById(R.id.view); viewButton.setOnClickListener(new View.OnClickListener() { public void onClick(View view) { startActivity(new Intent(Intent.ACTION_VIEW, contact)); } }); viewButton.setEnabled(contact!=null); } }