标签:target tin string类 font 配置文件 stack get write package
写这篇文章之前可以成功运行,文章后就各种找不到文件.所以并没有采用此种方式,后期完善.详见下篇解决方案.
配置文件读取很容易,修改需要注意权限,比如assets目录下就不允许修改.
New --- File
命名后选择properties方式打开
contrastIP = 192.166.1.65:8011
在main目录下,与java res 目录同级创建.
New --- Folder --- Assets Folder
assets目录详解: http://blog.csdn.net/chuntiandejiaobu10/article/details/52352128
在 AndroidManifest.xml 中添加:
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/> <uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/>
其实我去掉后测试也可以成功运行.还是加上.预防万一.
方法一 读取assets目录下的配置
Properties props = new Properties(); props.load(context.getAssets().open(configName));
将configName文件从assets目录下放出来,放在main目录下:
方法二 会出现错误 open failed: ENOENT (No such file or directory) 然而并不知道目录路径该如何填
Properties props = new Properties(); props.load(new FileInputStream(configName));
方法三 这样就能成功运行
Properties props = new Properties(); props.load(context.openFileInput(configName));
Properties props = new Properties();
props.load(context.openFileInput(configPath)); props.setProperty(keyName, keyValue);
// 读取assets目录下的,但是根本无法修改
// FileOutputStream out = context.getAssets().openFd(configPath).createOutputStream();
// 提示 open failed: EROFS (Read-only file system)
// FileOutputStream out = new FileOutputStream(configPath);
// 这样就可以了
FileOutputStream out = context.openFileOutput(configPath,Context.MODE_PRIVATE);
参考Context.MODE_PRIVATE说明: http://www.cnblogs.com/yjpjy/p/5407251.html
ProperTies 类
package com.lemon.demo.utils; import android.content.Context; import android.util.Log; import java.io.FileInputStream; import java.io.FileOutputStream; import java.util.Properties; public class ProperTies { //private static String configPath = getExternalStorageDirectory() + File.separator + "appConfig"; private static String configPath = "appConfig"; public static Properties getProperties(Context context) { Log.e("configPath", configPath); Properties urlProps; Properties props = new Properties(); try { //方法一:通过activity中的context攻取setting.properties的FileInputStream //注意这地方的参数appConfig在eclipse中应该是appConfig.properties才对,但在studio中不用写后缀 //InputStream in = c.getAssets().open("appConfig.properties"); //props.load(context.getAssets().open(configName)); //方法二:通过class获取setting.properties的FileInputStream //InputStream in = PropertiesUtill.class.getResourceAsStream("/assets/ setting.properties ")); // 方法三 props.load(context.openFileInput(configPath)); // props.load(new FileInputStream(configPath)); } catch (Exception e1) { // TODO Auto-generated catch block e1.printStackTrace(); } urlProps = props; return urlProps; } //保存配置文件 public static String setProperties(Context context, String keyName, String keyValue) { Properties props = new Properties(); try { props.load(context.openFileInput(configPath)); props.setProperty(keyName, keyValue); // FileOutputStream out = context.getAssets().openFd(configPath).createOutputStream(); FileOutputStream out = context.openFileOutput(configPath,Context.MODE_PRIVATE); // FileOutputStream out = new FileOutputStream(configPath); props.store(out, null); } catch (Exception e) { e.printStackTrace(); Log.e("setPropertiesError", e.toString()); return "修改配置文件失败!"; } return "设置成功"; } }
UrlString类:
package com.lemon.demo.json; import android.content.Context; import com.lemon.demo.utils.ProperTies; import java.util.Properties; /** * 读写配置属性类 */ public class UrlString { private String contrastIPName = "contrastIP"; // 上传路径 private String ip; private String ipAddress; public void setIPAddress(Context context) { Properties proper = ProperTies.getProperties(context); this.ip = proper.getProperty(contrastIPName, ""); this.ipAddress = "http://" + this.ip + "/index.html"; } public String setIPAddress(Context context, String keyValue) { String result = ProperTies.setProperties(context, contrastIPName, keyValue); this.ip = keyValue; this.ipAddress = "http://" + this.ip + "/index.html"; return result; } public String getIP() { return this.ip; } public String getIPAddress() { return this.ipAddress; } }
加载配置文件:
private UrlString urlString = new UrlString(); editText = (EditText) findViewById(R.id.et_ip); // 加载配置的信息 --- IP地址 urlString.setIPAddress(this); editText.setText(urlString.getIP());
// 获取完整地址
// urlString.getIPAddress()
修改配置文件:
String value = editText.getText().toString(); String result = urlString.setIPAddress(this,value); tools.customToast(result, ConfigActivity.this);
标签:target tin string类 font 配置文件 stack get write package
原文地址:https://www.cnblogs.com/jpfss/p/9914888.html