package com.example.hejingzhou.getbitmapdemo;

import android.content.ContentResolver;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.provider.MediaStore;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import java.io.FileNotFoundException;
import java.io.IOException;

public class MainActivity extends AppCompatActivity implements View.OnClickListener {
    private String TAG = getClass().getSimpleName();
    private Button btnGetAlbum, btnGetCamera;
    private ImageView imgAlbum, imgCamer,imgRoundAlbum,imgRoundCamer;
    private int SELECT_PICTURE = 0x00;
    private int SELECT_CAMER = 0x01;
    private Bitmap bitmap;
    private RoundTools roundTools;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        findViewById();
    }

    /**
     * 初始化控制元件
     */
    private void findViewById() {
        btnGetAlbum = (Button) findViewById(R.id.buttonGetAlbum);
        btnGetAlbum.setOnClickListener(this);
        btnGetCamera = (Button) findViewById(R.id.buttonGetCamera);
        btnGetCamera.setOnClickListener(this);
        imgAlbum = (ImageView) findViewById(R.id.imageViewAlbum);
        imgCamer = (ImageView) findViewById(R.id.imageViewCamera);
        imgRoundAlbum = (ImageView)findViewById(R.id.imageViewRoundAlbum);
        imgRoundCamer = (ImageView)findViewById(R.id.imageViewRoundCamera);
    }

    /**
     * Button監聽
     *
     * @param v
     */
    @Override
    public void onClick(View v) {
        switch (v.getId()) {
            case R.id.buttonGetAlbum://通過相簿選擇圖片
                Intent intentAlbum = new Intent(Intent.ACTION_GET_CONTENT);
                intentAlbum.addCategory(intentAlbum.CATEGORY_OPENABLE);
                intentAlbum.setType("image/*");
                startActivityForResult(intentAlbum.createChooser(intentAlbum, "選擇圖片"), SELECT_PICTURE);
                break;
            case R.id.buttonGetCamera://通過相機選取照片
                Intent intentCamer = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
                startActivityForResult(intentCamer, SELECT_CAMER);
                break;
        }
    }

    /**
     * 返回結果處理
     *
     * @param requestCode 請求程式碼
     * @param resultCode  結果程式碼
     * @param data        返回資料
     */
    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);

        if (requestCode == SELECT_PICTURE) {
            Log.i(TAG, "相簿");
            handle(resultCode, data);
            imgAlbum.setImageBitmap(bitmap);
            roundTools = new RoundTools();
            Bitmap roundAlbum = roundTools.toRoundBitmap(bitmap);
            imgRoundAlbum.setImageBitmap(roundAlbum);
        } else if (requestCode == SELECT_CAMER) {
            Log.i(TAG, "相機");
            /**
             * 一般手機data會完美的有資料，但是我的魅族就不行，網上查了查，還有一些手機都有這樣的
             * 問題比如三星和小米 。那麼我們就用  這種方式獲取bitmap
             *
             * if (data.getData() == null) {
             *       bitmap = (Bitmap) data.getExtras().get("data");
             * } else try {
             *      bitmap = MediaStore.Images.Media.getBitmap(this.getContentResolver(), data.getData());
             *   } catch (IOException e) {
             *     e.printStackTrace();
             *     }
             */
            if (data.getData() == null) {
                bitmap = (Bitmap) data.getExtras().get("data");
                Log.i(TAG, "BitData    " + bitmap);
                imgCamer.setImageBitmap(bitmap);
                roundTools = new RoundTools();
                Bitmap roundCamer = roundTools.toRoundBitmap(bitmap);
                imgRoundCamer.setImageBitmap(roundCamer);
            } else try {
                bitmap = MediaStore.Images.Media.getBitmap(this.getContentResolver(), data.getData());
                if (bitmap != bitmap) {//主要是防止handle處理出錯，就會將先前獲取相簿的照片show出來
                    imgCamer.setImageBitmap(bitmap);
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

    /**
     * 資料處理 共同點提取
     *
     * @param resultCode
     * @param data
     */
    private void handle(int resultCode, Intent data) {
        if (resultCode == RESULT_OK) {//結果程式碼是Ok的
            Uri uri = data.getData();
            if (uri != null && data.getData() != null) {
                Log.i(TAG, "uri 和 data.getData()不為空");
                ContentResolver contentResolver = this.getContentResolver();
                if (bitmap != null) {
                    bitmap.recycle();
                }
                try {
                    bitmap = BitmapFactory.decodeStream(contentResolver.openInputStream(uri));//出錯
                } catch (FileNotFoundException e) {
                    e.printStackTrace();
                }
            } else {
                Log.i(TAG, "uri為空或者data為空   " + "資料：" + data.getData() + "  uri: " + uri);
            }
        }
    }
}