package cn.keno.takephoto;

import java.io.File;
import java.util.Calendar;
import java.util.Locale;

import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.text.TextUtils;
import android.text.format.DateFormat;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;

public class MainActivity extends Activity {
	private final String TAG = "TakePhoto";
	private Button openbButton;
	private Button takePhoto2; // 拍照2
	private Button pickButton;
	private ImageView imageView;
	private String mPictureFile;
	private String filePath;

	private final int OPEN_RESULT = 1; // 開啟相機
	private final int PICK_RESULT = 2; // 檢視相簿
	private final int OPEN_RESULT2 = 3; // 開啟相機2

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		Log.i(TAG, "onCreate");
		openbButton = (Button) findViewById(R.id.btnTakePhoto);
		takePhoto2 = (Button) findViewById(R.id.btnTakePhoto2);
		pickButton = (Button) findViewById(R.id.btnPick);
		imageView = (ImageView) findViewById(R.id.imgPotho);
		openbButton.setOnClickListener(new OnClickListener() {
			@Override
			public void onClick(View v) {
				// 使用意圖直接呼叫安裝在手機上的照相機
				Intent intent = new Intent(
						android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
				// 開啟照相機,設定請求碼
				startActivityForResult(intent, OPEN_RESULT);
			}
		});

		takePhoto2.setOnClickListener(new OnClickListener() {
			@Override
			public void onClick(View v) {
				// 呼叫系統相機
				Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
				intent.addCategory(Intent.CATEGORY_DEFAULT);
				// 取當前時間為照片名
				mPictureFile = DateFormat.format("yyyyMMdd_hhmmss",
						Calendar.getInstance(Locale.CHINA))
						+ ".jpg";
				Log.d("onactivity", "mPictureFile：" + mPictureFile);
				filePath = getPhotoPath() + mPictureFile;
				// 通過檔案建立一個uri中
				Uri imageUri = Uri.fromFile(new File(filePath));
				// 儲存uri對應的照片於指定路徑
				intent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);
				startActivityForResult(intent, OPEN_RESULT2);
			}
		});

		pickButton.setOnClickListener(new OnClickListener() {
			@Override
			public void onClick(View v) {
				// 使用意圖直接呼叫手機相簿
				Intent intent = new Intent(
						Intent.ACTION_PICK,
						android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
				// 開啟手機相簿,設定請求碼
				startActivityForResult(intent, PICK_RESULT);
			}
		});
	}

	@Override
	protected void onSaveInstanceState(Bundle outState) {
		super.onSaveInstanceState(outState);
		outState.putString("filePath", filePath);
		Log.d(TAG, "onSaveInstanceState");
	}

	@Override
	protected void onRestoreInstanceState(Bundle savedInstanceState) {
		super.onRestoreInstanceState(savedInstanceState);
		if (TextUtils.isEmpty(filePath)) {
			filePath = savedInstanceState.getString("filePath");
		}
		Log.d(TAG, "onRestoreInstanceState");
	}

	@Override
	protected void onStart() {
		super.onStart();
		Log.i(TAG, "onStart");
	}

	@Override
	protected void onRestart() {
		super.onRestart();
		Log.i(TAG, "onRestart");
	}

	@Override
	protected void onResume() {
		super.onResume();
		Log.i(TAG, "onResume");
	}

	@Override
	protected void onPause() {
		super.onPause();
		Log.i(TAG, "onPause");
	}

	@Override
	protected void onStop() {
		super.onStop();
		Log.i(TAG, "onStop");
	}

	@Override
	protected void onDestroy() {
		super.onDestroy();
		Log.i(TAG, "onDestroy");
	}

	@Override
	protected void onActivityResult(int requestCode, int resultCode, Intent data) {
		if (requestCode == OPEN_RESULT) {
			if (resultCode == RESULT_OK) {
				Bundle bundle = data.getExtras();
				Bitmap bitmap = (Bitmap) bundle.get("data");
				imageView.setImageBitmap(bitmap);
			}
		} else if (requestCode == PICK_RESULT) {
			// 表示選擇圖片庫的圖片結果
			if (resultCode == RESULT_OK) {
				Uri uri = data.getData();
				imageView.setImageURI(uri);
			}
		} else if (requestCode == OPEN_RESULT2) {
			if (resultCode == RESULT_OK) {
				Log.e("takePhoto", filePath);
				Bitmap bitmap = BitmapFactory.decodeFile(filePath);
				// imageView.setImageURI(Uri.fromFile(new File(filePath)));
				imageView.setImageBitmap(bitmap);
			}
		}
	}

	/**
	 * 獲得照片路徑
	 * 
	 * @return
	 */
	private String getPhotoPath() {
		return Environment.getExternalStorageDirectory() + "/DCIM/";
	}
}