小结几个小问题，关于数据库乱码，dialog

1、读取数据库中的中文时出现乱码问题

2、完全自定义的dialog

3、在xml文件中定义时间格式

1：数据库中文乱码

只要在Cursor读取时，用二进制的形式（getBolb()）读出来再转码就可以了

String s = cursro.getBolb(1);
String content = new String(s, "gb2312");

2：自定义dialog

package org.ila.car.filemanager;

import android.app.Dialog;
import android.content.Context;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.TextView;

/**
* 有确定有取消按钮的信息提示对话框
* @author wusj
*
*/
public class MsgDialog extends Dialog implements android.view.View.OnClickListener{
private int titleID;
private int msgID;
private Context context;
private OnOkClickListener click;
private String msg;

public void setOnOkClickListener(OnOkClickListener c) {
this.click = c;
}

public interface OnOkClickListener{
public void onClick(MsgDialog d);
}

public MsgDialog(Context context, int theme, int titleID, int msgID) {
super(context, theme);
this.context = context;
this.titleID = titleID;
this.msgID = msgID;
}

public MsgDialog(Context context, int style, int titleID, String msg){
super(context, style);
this.context = context;
this.titleID = titleID;
this.msg = msg;
}

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);

View view = LayoutInflater.from(context).inflate(R.layout.msg_dialog_layout, null);
setContentView(view);

TextView tvTitle = (TextView) view.findViewById(R.id.tv_title);
TextView tvMsg = (TextView) view.findViewById(R.id.tv_msg);

tvTitle.setText(context.getResources().getString(titleID));
if (msg == null){
tvMsg.setText(context.getResources().getString(msgID));
} else {
tvMsg.setText(msg);
}

TextView tvOk = (TextView) view.findViewById(R.id.tv_ok);
tvOk.setOnClickListener(this);

TextView tvCancel = (TextView) view.findViewById(R.id.tv_cancel);
tvCancel.setOnClickListener(new View.OnClickListener() {

public void onClick(View v) {
MsgDialog.this.dismiss();
}
});
}

public void onClick(View v) {
if (click != null) {
click.onClick(this);
}
}

}

xml布局

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="348dip"
android:layout_height="193dip"
android:background="@drawable/fm_dialog_bg"
android:gravity="center"
android:orientation="vertical"
android:padding="6dip" >

<TextView
android:layout_marginTop="2dip"
android:layout_marginLeft="2dip"
android:textColor="#ffffff"
android:textSize="22sp"
android:id="@+id/tv_title"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="@drawable/fm_dialog_top_bg" />

<TextView
android:layout_margin="10dip"
android:layout_weight="1"
android:id="@+id/tv_msg"
android:layout_width="fill_parent"
android:layout_height="0dip" />

<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="1dip"
android:orientation="horizontal" >

<TextView
android:id="@+id/tv_ok"
android:layout_width="0dip"
android:layout_height="wrap_content"
android:layout_weight="1"
android:background="@drawable/fm_dialog_btn_ok_bg"
android:gravity="center"
android:text="确定" />

<TextView
android:id="@+id/tv_cancel"
android:layout_width="0dip"
android:layout_height="wrap_content"
android:layout_weight="1"
android:background="@drawable/fm_dialog_btn_cancel_bg"
android:gravity="center"
android:text="取消" />
</LinearLayout>

</LinearLayout>

styles.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>

<style name="dialog" parent="@android:style/Theme.Dialog">

<!-- name是我们在使用时要用到的资源的标志，parent是指当前的样式所继承的父类样式 -->
<item name="android:windowFrame">@null</item>
<item name="android:windowIsFloating">true</item>
<item name="android:windowIsTranslucent">true</item>
<item name="android:windowNoTitle">true</item>
<!-- 隐藏标题栏 -->
<item name="android:background">@android:color/transparent</item>
<item name="android:windowBackground">@android:color/transparent</item>
<item name="android:backgroundDimEnabled">true</item>
<item name="android:backgroundDimAmount">0.6</item>
</style>

</resources>

3：在xml文件中定义时间格式，并在程序中引用

Values.xml中
<string name="min_available" msgid="5493947690062988925">"还剩 <xliff:g id="MINUTES">%d</xliff:g> 分钟"</string>

程序中引用：
timeStr = String.format(res.getString(R.string.min_available), t/60 + 1);