using System;
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using Android.Content;
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using Android.App;
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using Android.OS;
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using Android.Graphics;
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using Android.Widget;
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using Android.Provider;
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using Java.IO;
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using Android.Graphics.Drawables;
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namespace Shared
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{
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[Activity(MainLauncher = false, Theme = "@android:style/Theme.NoTitleBar.Fullscreen")]
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internal class CameraActivity : Android.App.Activity
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{
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bool isZoom;
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protected override void OnCreate(Android.OS.Bundle savedInstanceState)
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{
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base.OnCreate(savedInstanceState);
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isZoom = Intent.Extras.GetBoolean("IsZoom", true);
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if (Intent.Extras.GetInt("Type") == Camera.TypePicture)
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{
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var intent = new Intent(Intent.ActionPick);
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intent.SetType("image/*");//相片类型
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StartActivityForResult(intent, Camera.TypePicture);
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}
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else
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{
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if (Android.OS.Environment.ExternalStorageState == Android.OS.Environment.MediaMounted)
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{
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var getImageByCamera = new Intent("android.media.action.IMAGE_CAPTURE");
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StartActivityForResult(getImageByCamera, Camera.TypeCamera);
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}
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else
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{
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Toast.MakeText(Shared.Application.Activity, "Makue Sure SD Card", ToastLength.Long).Show();
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}
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}
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}
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/// <summary>
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/// 处理选择或者拍照的图片
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/// </summary>
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/// <param name="requestCode">Request code.</param>
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/// <param name="resultCode">Result code.</param>
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/// <param name="data">Data.</param>
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protected override void OnActivityResult(int requestCode, Result resultCode, Intent data)
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{
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try
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{
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base.OnActivityResult(requestCode, resultCode, data);
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if (Camera._callback == null)
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{
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return;
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}
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if (resultCode != Result.Ok)
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{
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Camera._callback(null);
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return;
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}
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var path = System.IO.Path.Combine(Shared.Application.RootPath, Camera._fileName);
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var uri = data.Data;
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if (uri == null)
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{
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var bundle = data.Extras;
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if (bundle == null)
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{
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Toast.MakeText(Shared.Application.Activity, "Error", ToastLength.Long).Show();
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path = null;
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}
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else
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{
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compressAndGenImage((Bitmap)bundle.Get("data"), path, 200);
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}
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}
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else
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{
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var photoPath = uri.Path;
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if (!System.IO.File.Exists(photoPath))
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{
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//获取照片路径
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string[] filePathColumn = { MediaStore.Audio.AudioColumns.Data };
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var cursor = Shared.Application.Activity.ContentResolver.Query(uri, filePathColumn, null, null, null);
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cursor.MoveToFirst();
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photoPath = cursor.GetString(cursor.GetColumnIndex(filePathColumn[0]));
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cursor.Close();
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}
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compressAndGenImage(BitmapFactory.DecodeFile(photoPath), path, 200);
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}
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Camera._callback(path);
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}
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finally
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{
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Finish();
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}
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}
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void compressAndGenImage(Bitmap bitmap, string outPath, int maxSize)
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{
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if (isZoom)
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{
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var width = bitmap.Width;
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var height = bitmap.Height;
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//Shared.HDLUtils.WriteLine("原宽度=" + bitmap.Width + "高度=" + bitmap.Height);
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var noScale = width * 1.0f / height;
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var scale = 16.0f / 9.0f;
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float x = 0, y = 0, w = width, h = height;
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if (scale < noScale)
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{
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w = height * scale;
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x = (width - w) / 2;
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}
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else
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{
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h = width / scale;
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y = (height - h) / 2;
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}
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var matrix = new Matrix();
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matrix.PostScale(Shared.Application.GetRealWidth(640) * 1.0f / w, Shared.Application.GetRealHeight(360) * 1.0f / h);
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bitmap = Bitmap.CreateBitmap(bitmap, (int)x, (int)y, (int)w, (int)h, matrix, true);
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//Shared.HDLUtils.WriteLine("现在宽度=" + bitmap.Width + "高度=" + bitmap.Height);
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var fs = new System.IO.FileStream(outPath, System.IO.FileMode.Create, System.IO.FileAccess.Write);
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// scale
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var options = 100;
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// Store the bitmap into output stream(no compress)
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bitmap.Compress(Bitmap.CompressFormat.Jpeg, options, fs);
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// Compress by loop
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while (fs.Length / 1024 > maxSize)
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{
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// Clean up os
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fs.Close();
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// interval 10
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options -= 10;
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fs = new System.IO.FileStream(outPath, System.IO.FileMode.Create, System.IO.FileAccess.Write);
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bitmap.Compress(Bitmap.CompressFormat.Jpeg, options, fs);
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}
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fs.Flush();
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fs.Close();
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}
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else
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{
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var fs = new System.IO.FileStream(outPath, System.IO.FileMode.Create, System.IO.FileAccess.Write);
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// scale
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var options = 100;
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// Store the bitmap into output stream(no compress)
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bitmap.Compress(Bitmap.CompressFormat.Jpeg, options, fs);
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fs.Flush();
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fs.Close();
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}
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}
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}
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/// <summary>
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/// 拍照或者选择图片
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/// </summary>
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public static class Camera
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{
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/// <summary>
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/// 拍照或者读取图片完成时调用的动作,string==null表示用户取消了拍照或者取消选择图片,string!=null,表示图片的路径
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/// </summary>
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internal static Action<string> _callback;
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/// <summary>
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/// 文件名
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/// </summary>
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internal static string _fileName;
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/// <summary>
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/// 选择类型是拍照
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/// </summary>
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internal static readonly int TypeCamera = 0xFF0001;
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/// <summary>
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/// 选择图片
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/// </summary>
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internal static readonly int TypePicture = 0xFF0002;
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/// <summary>
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/// 拍照
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/// </summary>
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/// <param name="callback">回调函数</param>
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/// <param name="fileName">文件名</param>
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public static void TakePicture(Action<string> callback, string fileName,bool isZoom=true)
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{
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(Application.Activity as BaseActivity)?.SetCamera((obj) => {
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if(obj){
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_callback = callback;
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var intent = new Intent(Application.Activity, typeof(CameraActivity));
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intent.PutExtra("Type", TypeCamera);
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intent.PutExtra("IsZoom", isZoom);
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Application.Activity?.StartActivity(intent);
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}
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else{
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callback?.Invoke(null);
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}
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});
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_fileName = fileName;
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}
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/// <summary>
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/// 选择图片
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/// </summary>
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/// <param name="callback">回调函数</param>
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/// <param name="fileName">文件名</param>
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public static void SelectPicture(Action<string> callback, string fileName, bool isZoom = true)
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{
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(Application.Activity as BaseActivity)?.SetImagePermission((obj) =>
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{
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if (obj)
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{
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_fileName = fileName;
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_callback = callback;
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var intent = new Intent(Application.Activity, typeof(CameraActivity));
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intent.PutExtra("Type", TypePicture);
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intent.PutExtra("IsZoom", isZoom);
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Application.Activity?.StartActivity(intent);
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}else{
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callback?.Invoke(null);
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}
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});
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}
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}
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}
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