axml
<?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" > <Button android:id="@+id/btn0" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="从相册中选择照片" /> <Button android:id="@+id/btn1" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="拍照" /> <ImageView android:id="@+id/imageID" android:layout_width="fill_parent" android:layout_height="wrap_content" /> </LinearLayout>
C#
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using
System;
using
Android.App;
using
Android.Content;
using
Android.Widget;
using
Android.OS;
using
Android.Graphics;
using
System.IO;
namespace
Phoot
{ [Activity(Label = "Phoot", MainLauncher = true, Icon = "@drawable/icon")]
public
class Activity1 : Activity
{
public
static int NONE = 0;
public
static int PHOTOHRAPH = 1;//拍照
public
static int PHOTOXZOOM = 2;//缩放
public
static int PHOTORESOULT = 3;//结果
public
static string IMAGE_UNSPECTFIED = "image/*";
ImageView imageview = null;
Button button0 = null;
Button button1 = null;
protected
override void OnCreate(Bundle bundle)
{
base.OnCreate(bundle);
// Set our view from the "main" layout resource
SetContentView(Resource.Layout.Main);
button0 = FindViewById<Button>(Resource.Id.btn0);
button1 = FindViewById<Button>(Resource.Id.btn1);
imageview = FindViewById<ImageView>(Resource.Id.imageID);
button0.Click += new
EventHandler(button0_Click);
button1.Click += new
EventHandler(button1_Click);
}
//选择照片
void
button0_Click(object
sender, EventArgs e)
{
Intent intent = new
Intent(Intent.ActionPick, null);
//选择照片意图
intent.SetDataAndType(
Android.Provider.MediaStore.Images.Media.ExternalContentUri, IMAGE_UNSPECTFIED);
StartActivityForResult(intent, PHOTOXZOOM);
}
//拍照
void
button1_Click(object
sender, EventArgs e)
{
Intent intent = new
Intent(Android.Provider.MediaStore.ActionImageCapture);
string
file = System.IO.Path.Combine(Android.OS.Environment.ExternalStorageDirectory.ToString(),Android.OS.Environment.DirectoryDcim.ToString()+ "/test.jpg");
var
outputFileUri = Android.Net.Uri.Parse(file);
intent.PutExtra(Android.Provider.MediaStore.ExtraOutput,file);
StartActivityForResult(intent, PHOTOHRAPH);
}
protected
override void OnActivityResult(int
requestCode, Result resultCode, Intent data)
{
if
(requestCode == NONE)
{
return;
}
if
(requestCode == PHOTOHRAPH)
{
//获取照片
Bitmap bitmap = (Bitmap)data.Extras.Get("data");
Java.IO.File picture = new
Java.IO.File(Android.OS.Environment.ExternalStorageDirectory.ToString()+"/"+Android.OS.Environment.DirectoryDcim.ToString() + "/test.jpg");
//Java.IO.FileOutputStream b = new Java.IO.FileOutputStream(picture);
FileStream MyFileStream1 = new
FileStream(picture.ToString(), FileMode.Create);
//保存照片
bitmap.Compress(Bitmap.CompressFormat.Jpeg, 100, MyFileStream1);
if
(System.IO.File.Exists(picture.ToString()))
{
startPhotoZoom(Android.Net.Uri.FromFile(picture));
}
//startPhotoZoom
}
if
(data == null)
{
return;
}
if
(requestCode == PHOTOXZOOM)
{
startPhotoZoom(data.Data);
}
//处理结果
if
(requestCode == PHOTORESOULT)
{
Bundle extras = data.Extras;
if
(extras != null)
{
Bitmap photo = (Bitmap)extras.GetParcelable("data");
//Stream stream = null;
//压缩文件
//photo.Compress(Bitmap.CompressFormat.Jpeg, 75, stream);
imageview.SetImageBitmap(photo);
}
}
base.OnActivityResult(requestCode, resultCode, data);
}
//缩放
public
void startPhotoZoom(Android.Net.Uri uri)
{
Intent intent = new
Intent("com.android.camera.action.CROP");
intent.SetDataAndType(uri, IMAGE_UNSPECTFIED);
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?
intent.PutExtra("outputX", 100);
intent.PutExtra("outputY", 100);
intent.PutExtra("return-data", true);
StartActivityForResult(intent, PHOTORESOULT);
}
}
} |