# Android(Eclipse)——拍照（打开相机）+保存到本地+显示原图（不是压缩过的）

原汁原味的图片（↑）与压缩图片（↓）的对比

权限设置

代码

	public class MainActivity extends Activity {
	
	private String fileName="123",filePath="photo";
	private Bitmap bitmap;
	private ImageView iv;
	//声明一个全局变量，用做等下拍照获取的图片的路径
	private String caotureFile;
	
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		iv = (ImageView)findViewById(R.id.imageView);
		findViewById(R.id.button2).setOnClickListener(new View.OnClickListener() {
			@Override
			public void onClick(View v) {
			try {
				getImageFromCamera();
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
					}
			}
		});

#创建SD卡路径下的文件夹，保存图片

public void getImageFromCamera() throws IOException{
		//判断sd卡状态
		String sdState=Environment.getExternalStorageState();
		if (sdState.equals(Environment.MEDIA_MOUNTED)) {
			//打开相机
			Intent intent = new 
			Intent(MediaStore.ACTION_IMAGE_CAPTURE);
			//	获取sd卡目录，创建文件
			String SDPATH=Environment.getExternalStorageDirectory()+"/";
			//重点，这里是创建目录
			String filepath = SDPATH+"pthoto1/";
			caotureFile = filepath+System.currentTimeMillis()+".jpg";
			
			File file = new File(filepath);
			if(!file.exists())file.mkdirs();
			
			File caeatFile = new File(caotureFile);
			caeatFile.createNewFile();
			
			intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(new File(caotureFile)));
			startActivityForResult(intent, 1);
		}
	}

重点部分，将图片重新压缩

	@Override
	protected void onActivityResult(int requestCode, int resultCode, Intent data) {
		//判断调用者操作
		if (resultCode==RESULT_OK) {
		//获取图片，转化成bitmap格式
				bitmap = BitmapFactory.decodeFile(caotureFile,null);
				//把图片显示到你想要的图片标签上
				iv.setImageBitmap(bitmap);
				FileOutputStream fout = null;
				try {
					fout = new FileOutputStream(caotureFile);
				} catch (FileNotFoundException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
				//把文件保存在本地的指定文件夹下
				bitmap.compress(Bitmap.CompressFormat.JPEG, 100, fout);
				break;
			}
			
		}
	}