andriod打开摄像头和打开相册，andriod摄像头相册

andriod打开摄像头和打开相册，andriod摄像头相册

package com.example.yanlei.picture;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import java.io.File;
import java.io.IOException;

import android.app.Activity;
import android.content.Intent;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Matrix;
import android.media.ExifInterface;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {


    private static final String tag = "MainActivity";
    private static final int CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE = 100;
    private static final int PICK_IMAGE_ACTIVITY_REQUEST_CODE = 200;

    private ImageView imageView;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        imageView = (ImageView) this.findViewById(R.id.image_view);

        Button button = (Button) this.findViewById(R.id.open_camera);
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                takePicture();
            }
        });

        Button pickImageBtn = (Button) this.findViewById(R.id.pick_image);
        pickImageBtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                openAlbum();
            }
        });

    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }
    private static String picFileFullName;
    //拍照
    public void takePicture(){
        String state = Environment.getExternalStorageState();
        if (state.equals(Environment.MEDIA_MOUNTED)) {
            Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
            File outDir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES);
            if (!outDir.exists()) {
                outDir.mkdirs();
            }
            File outFile =  new File(outDir, System.currentTimeMillis() + ".jpg");
            picFileFullName = outFile.getAbsolutePath();
            intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(outFile));
            intent.putExtra(MediaStore.EXTRA_VIDEO_QUALITY, 1);
            startActivityForResult(intent, CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE);
        } else{
            Log.e(tag, "请确认已经插入SD卡");
        }
    }

    //打开本地相册
    public void openAlbum(){
        Intent intent = new Intent();
        intent.setType("image/*");
        intent.setAction(Intent.ACTION_GET_CONTENT);
        this.startActivityForResult(intent, PICK_IMAGE_ACTIVITY_REQUEST_CODE);
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (requestCode == CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE) {
            if (resultCode == RESULT_OK) {
                Log.e(tag, "获取图片成功，path="+picFileFullName);
                toast("获取图片成功，path="+picFileFullName);
                setImageView(picFileFullName);
            } else if (resultCode == RESULT_CANCELED) {
                // 用户取消了图像捕获
            } else {
                // 图像捕获失败，提示用户
                Log.e(tag, "拍照失败");
            }
        } else if (requestCode == PICK_IMAGE_ACTIVITY_REQUEST_CODE) {
            if (resultCode == RESULT_OK) {
                Uri uri = data.getData();
                if(uri != null){
                    String realPath = getRealPathFromURI(uri);
                    Log.e(tag, "获取图片成功，path="+realPath);
                    toast("获取图片成功，path="+realPath);
                    setImageView(realPath);
                }else{
                    Log.e(tag, "从相册获取图片失败");
                }
            }
        }
    }

    private void setImageView(String realPath){
        Bitmap bmp = BitmapFactory.decodeFile(realPath);
        int degree = readPictureDegree(realPath);
        if(degree <= 0){
            imageView.setImageBitmap(bmp);
        }else{
            Log.e(tag, "rotate:"+degree);
            //创建操作图片是用的matrix对象
            Matrix matrix=new Matrix();
            //旋转图片动作