编写和Android中使用文件操作读取配置数据 [英] write and read configuration data using File operation in Android
问题描述
在我的应用程序有一些配置数据,如ip地址,PORTNO,标题等。我想在手机保持这些数据的私有。我决定写如下格式的数据。
ip地址127.0.0.1 =
端口= 1234
标题= MyNewApplication
我很困惑与文件流。我也想不使用temperory文件以更新值。请回复此提供了解决方案。
我试着用低于code
公共类MTX {公共静态最后弦乐preFS_NAME =我的prefsFile公共静态无效ConfWrite(字符串类型,字符串值){
共享preferences设置= preferenceManager.getDefaultShared preferences(NULL);
共享preferences.Editor编辑= settings.edit();
editor.putString(ip地址,127.0.0.1);
editor.putInt(港,1234);
editor.putString(标题,MyNewApplication); //提交的编辑!
editor.commit();
}公共静态无效ConfRead(字符串类型,字符串值){ 共享preferences设置= preferenceManager.getDefaultShared preferences(NULL);
串ip地址= settings.getString(ip地址,);
INT端口= settings.getInt(端口,0);
字符串title = settings.getString(标题,); Log.e(,标题);
}
}
使用共享preferences
来代替。
简单易用。
详细信息可以在这里找到。
http://developer.android.com/guide/topics/数据/数据storage.html
公共类计算器扩展活动{
公共静态最后弦乐preFS_NAME =我的prefsFile@覆盖
保护无效的onCreate(捆绑状态){
super.onCreate(州);
。 。 。 //恢复preferences
共享preferences设置= getShared preferences(preFS_NAME,0);
串ip地址= settings.getString(ip地址,);
INT端口= settings.getInt(端口,0);
INT TITLE = settings.getString(标题,);
}@覆盖
保护无效的onStop(){
super.onStop(); //我们需要一个编辑器对象,以preference变化。
//所有的对象都是从android.context.Context
共享preferences设置= getShared preferences(preFS_NAME,0);
共享preferences.Editor编辑= settings.edit();
editor.putString(ip地址,127.0.0.1);
editor.putInt(港,1234);
editor.putString(标题,MyNewApplication); //提交的编辑!
editor.commit();
}}
In my application there are some configuration data, such as ipaddress, portno, title and etc. I want to keep these data in phone privately. I decided to write data in below format
IPAddress=127.0.0.1
Port=1234
Title=MyNewApplication
i am confused with file streams. I also want to update values without using a temperory file. Please provide a solution to this.
I tried with below code
public class Mtx {
public static final String PREFS_NAME = "MyPrefsFile";
public static void ConfWrite(String type, String value) {
SharedPreferences settings = PreferenceManager.getDefaultSharedPreferences(null);
SharedPreferences.Editor editor = settings.edit();
editor.putString("IPAddress", "127.0.0.1");
editor.putInt("port", 1234);
editor.putString("Title", "MyNewApplication");
// Commit the edits!
editor.commit();
}
public static void ConfRead( String type, String value ) {
SharedPreferences settings = PreferenceManager.getDefaultSharedPreferences(null);
String ipAddress = settings.getString("IPAddress", "");
int port = settings.getInt("port", 0);
String title = settings.getString("Title", "");
Log.e("", title);
}
}
Use SharedPreferences
instead.
Simple to use.
Details can be found here.
http://developer.android.com/guide/topics/data/data-storage.html
public class Calc extends Activity {
public static final String PREFS_NAME = "MyPrefsFile";
@Override
protected void onCreate(Bundle state){
super.onCreate(state);
. . .
// Restore preferences
SharedPreferences settings = getSharedPreferences(PREFS_NAME, 0);
String ipAddress = settings.getString("IPAddress", "");
int port = settings.getInt("port", 0);
int title = settings.getString("Title", "");
}
@Override
protected void onStop(){
super.onStop();
// We need an Editor object to make preference changes.
// All objects are from android.context.Context
SharedPreferences settings = getSharedPreferences(PREFS_NAME, 0);
SharedPreferences.Editor editor = settings.edit();
editor.putString("IPAddress", "127.0.0.1");
editor.putInt("port", 1234);
editor.putString("Title", "MyNewApplication");
// Commit the edits!
editor.commit();
}}
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