调用系统Camera

来源：互联网发布：淘宝如何打印电子面单编辑：程序博客网时间：2024/05/17 02:41

package com.example.mcamera;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;

public class MainActivity extends Activity implements OnClickListener {
   Button StartCamera1;
   Button StartCamera2;
   ImageView showImage;
   final static int REQ_Code1 = 1;
   final static int REQ_Code2 = 1;
   String mFilePath;

   @Override
   protected void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
       setContentView(R.layout.activity_main);
       init();
       //得到sdcard的绝对路径
       mFilePath=Environment.getExternalStorageDirectory().getPath();
       mFilePath=mFilePath+"/"+"pic.png";
   }

   private void init() {
       StartCamera1 = (Button) findViewById(R.id.startCamera1);
       StartCamera2 = (Button) findViewById(R.id.startCamera2);
       showImage = (ImageView) findViewById(R.id.showImageView);
       StartCamera1.setOnClickListener(this);
       StartCamera2.setOnClickListener(this);
   }
   @Override
   public void onClick(View view) {
       switch (view.getId()) {
       case R.id.startCamera1:
           //通过隐式intent启动系统Camera 进行拍照
           Intent intent=new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
           //通过startActivityForResult这种Activity启动方式将结果返回
           startActivityForResult(intent, REQ_Code1);
           break;
       case R.id.startCamera2:
           Intent intent1=new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
           //指定所拍的照片存放到自己给定的路径
           Uri uri=Uri.fromFile(new File(mFilePath));
           intent1.putExtra(MediaStore.EXTRA_OUTPUT, uri);
           startActivityForResult(intent1, REQ_Code2);
           break;

       default:
           break;
       }

   }
   @Override
   protected void onActivityResult(int requestCode, int resultCode, Intent data) {
       super.onActivityResult(requestCode, resultCode, data);
       if (resultCode==RESULT_OK) {
           if (requestCode==REQ_Code1) {
               Bundle bundle=data.getExtras();
               //得到的Bitmap其实是缩略图
               Bitmap bitmap=(Bitmap) bundle.get("data");
               showImage.setImageBitmap(bitmap);

           }else if (requestCode==REQ_Code2) {
               try {
                   FileInputStream fis=new FileInputStream(new File(mFilePath));
                   //此处得到的Bitmap 是拍照得到的真实图片
                   Bitmap bitmap=BitmapFactory.decodeStream(fis);
                   showImage.setImageBitmap(bitmap);
                   fis.close();
               } catch (FileNotFoundException e) {
                   e.printStackTrace();
               } catch (IOException e) {
                   e.printStackTrace();
               }
           }

       }
   }

}
注意：第二种对Bitmap 操做要添加对SD卡的读写权限

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