1.try {
String enUft = URLEncoder.encode("广东省福利彩票开奖信息网", "UTF-8");
System.out.println(enUft);
java.net.URLDecoder urlDecoder = new java.net.URLDecoder();
String s = urlDecoder.decode(enUft,"UTF-8");
System.out.println(s);
} catch (Exception e) {
e.printStackTrace();
}
try {
String enUft = URLEncoder.encode("广东省福利彩票开奖信息网", "GB2312");
System.out.println(enUft);
java.net.URLDecoder urlDecoder = new java.net.URLDecoder();
String s = urlDecoder.decode(enUft,"GB2312");
System.out.println(s);
} catch (Exception e) {
e.printStackTrace();
}
try {
String enUft = URLEncoder.encode("广东省福利彩票开奖信息网", "UTF-8");
System.out.println(enUft);
java.net.URLDecoder urlDecoder = new java.net.URLDecoder();
String s = urlDecoder.decode(enUft,"GB2312");
System.out.println(s);
} catch (Exception e) {
e.printStackTrace();
}
结果:
%E5%B9%BF%E4%B8%9C%E7%9C%81%E7%A6%8F%E5%88%A9%E5%BD%A9%E7%A5%A8%E5%BC%80%E5%A5%96%E4%BF%A1%E6%81%AF%E7%BD%91
广东省福利彩票开奖信息网
%B9%E3%B6%AB%CA%A1%B8%A3%C0%FB%B2%CA%C6%B1%BF%AA%BD%B1%D0%C5%CF%A2%CD%F8
广东省福利彩票开奖信息网
%E5%B9%BF%E4%B8%9C%E7%9C%81%E7%A6%8F%E5%88%A9%E5%BD%A9%E7%A5%A8%E5%BC%80%E5%A5%96%E4%BF%A1%E6%81%AF%E7%BD%91
骞夸?????绂???╁僵绁ㄥ??濂?淇℃??缃?
2.new String(xxx.getBytes("iso8859-1"),"UTF-8")
//定时器
m_pTimer = [NSTimer scheduledTimerWithTimeInterval:1.0
target:self
selector:@selector(calcuRemainTime)
userInfo:nil
repeats:YES];
//开始时间获取
m_pStartDate = [NSDate date];
// m_pStartDate = [[NSDate date] retain];
==============
#define TOTAL_TIME 3600
/*
*倒计时剩余时间计算
*/
- (void)calcuRemainTime
{
double deltaTime = [[NSDate date] timeIntervalSinceDate:m_pStartDate];
// NSLog(@"%.f",deltaTime);
// NSLog(@"%d",(int)(deltaTime+0.5));
int remainTime = TOTAL_TIME - (int)(deltaTime+0.5) ;
if (remainTime < 0.0)
{
[m_pTimer invalidate];
//TODO:
//game over
return;
}
[self showTime:remainTime];
}
/*
*在视图中显示时间
*/
- (void)showTime:(int)time
{
int inputSeconds = (int)time;
int hours = inputSeconds / 3600;
int minutes = ( inputSeconds - hours * 3600 ) / 60;
int seconds = inputSeconds - hours * 3600 - minutes * 60;
NSString *strTime = [NSString stringWithFormat:@"%.2d:%.2d:%.2d",hours,minutes, seconds];
//显示在文本视图中
NSLog(@"==%@",strTime);
}
调用系统的裁剪工具对相册或者拍照的图片进行裁剪
startActivityforResult用的很恰当，一些系统action需要注意。
package com.photosizing;
import java.io.ByteArrayOutputStream;
import java.io.File;
import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;
public class testActivity extends Activity {
public static final int NONE = 0;
public static final int PHOTOHRAPH = 1;// 拍照
public static final int PHOTOZOOM = 2; // 缩放
public static final int PHOTORESOULT = 3;// 结果
public static final String IMAGE_UNSPECIFIED = "image/*";
ImageView imageView = null;
Button button0 = null;
Button button1 = null;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
imageView = (ImageView) findViewById(R.id.imageID);
button0 = (Button) findViewById(R.id.btn_01);
button1 = (Button) findViewById(R.id.btn_02);
button0.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(Intent.ACTION_PICK, null);
intent.setDataAndType(
MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
IMAGE_UNSPECIFIED);
startActivityForResult(intent, PHOTOZOOM);
}
});
button1.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(new File(
Environment.getExternalStorageDirectory(), "temp.jpg")));
startActivityForResult(intent, PHOTOHRAPH);
}
});
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode == NONE)
return;
if (data == null)
return;
// 拍照
if (requestCode == PHOTOHRAPH) {
// 设置文件保存路径这里放在跟目录下
File picture = new File(Environment.getExternalStorageDirectory()
+ "/temp.jpg");
startPhotoZoom(Uri.fromFile(picture));
}
// 读取相册缩放图片
if (requestCode == PHOTOZOOM) {
startPhotoZoom(data.getData());
}
// 处理结果
if (requestCode == PHOTORESOULT) {
Bundle extras = data.getExtras();
if (extras != null) {
Bitmap photo = extras.getParcelable("data");
ByteArrayOutputStream stream = new ByteArrayOutputStream();
photo.compress(Bitmap.CompressFormat.JPEG, 75, stream);// (0 -
// 100)压缩文件
imageView.setImageBitmap(photo);
}
}
super.onActivityResult(requestCode, resultCode, data);
}
public void startPhotoZoom(Uri uri) {
Intent intent = new Intent("com.android.camera.action.CROP");
intent.setDataAndType(uri, IMAGE_UNSPECIFIED);
intent.putExtra("crop", "true");
// aspectX aspectY 是宽高的比例
intent.putExtra("aspectX", 1);
intent.putExtra("aspectY", 1);
// outputX outputY 是裁剪图片宽高
intent.putExtra("outputX", 64);
intent.putExtra("outputY", 64);
intent.putExtra("return-data", true);
startActivityForResult(intent, PHOTORESOULT);
}
}
XML文件
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent"> <TextView android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="@string/hello" /> <ImageView android:id="@+id/imageID" android:adjustViewBounds="true" android:maxWidth="50dip" android:maxHeight="50dip" android:layout_width="wrap_content" android:layout_height="wrap_content" /> <Button android:id="@+id/btn_01" android:layout_height="50dip" android:text="相册" android:layout_width="150dip"/> <Button android:id="@+id/btn_02" android:layout_height="50dip" android:text="拍照" android:layout_width="150dip"/> </LinearLayout>