android 选择图片剪裁拍照兼容所有版本的代码

浏览数：19 / 时间：2015年06月11日

在做项目的时候，总是避免不了头像的剪裁和选取，然而4.4以后以前能够使用的代码，也用不了了。做下记录吧。因为下面代码我用了几次了。

以后直接复制粘贴。

1.拍照和选择图片

选择图片

<span style="white-space:pre">			</span>intent = new Intent(Intent.ACTION_GET_CONTENT);
			intent.setType("image/*");
			startActivityForResult(intent, GALLERY_REQUEST_CODE);

拍照

<span style="white-space:pre">			</span>intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
			startActivityForResult(intent, CAMERA_REQUEST_CODE);

2.获取系统传来的值

标记符

	private static int CAMERA_REQUEST_CODE = 1;
	private static int GALLERY_REQUEST_CODE = 2;
	private static int CROP_REQUEST_CODE = 3;

	@Override
	protected void onActivityResult(int requestCode, int resultCode, Intent data) {
		if (requestCode == CAMERA_REQUEST_CODE) {
			if (data == null) {
				return;
			} else { //拍照
				Bundle extras = data.getExtras();
				if (extras != null) {
					Bitmap bm = extras.getParcelable("data");
					Uri uri = saveBitmap(bm);
					startImageZoom(uri);
				}
			}
		} else if (requestCode == GALLERY_REQUEST_CODE) {
			if (data == null) {//相册
				return;
			}
			Uri uri;
			uri = data.getData();
			Uri fileUri = convertUri(uri);
			startImageZoom(fileUri);
		} else if (requestCode == CROP_REQUEST_CODE) {
			if (data == null) {
				return;
			}//剪裁后的图片
			Bundle extras = data.getExtras();
			if (extras == null) {
				return;
			}
			Bitmap bm = extras.getParcelable("data");
			ShowImageView(bm);
		}
	}

图片选取后根据Url 转成流并保存

	private Uri convertUri(Uri uri) {
		InputStream is = null;
		try {
			is = getContentResolver().openInputStream(uri);
			Bitmap bitmap = BitmapFactory.decodeStream(is);
			is.close();
			return saveBitmap(bitmap);
		} catch (FileNotFoundException e) {
			e.printStackTrace();
			return null;
		} catch (IOException e) {
			e.printStackTrace();
			return null;
		}
	}

保存图片记得加权限

	private Uri saveBitmap(Bitmap bm) {
		File tmpDir = new File(Environment.getExternalStorageDirectory()
				+ "/xiaoxin");
		if (!tmpDir.exists()) {
			tmpDir.mkdir();
		}
		File img = new File(tmpDir.getAbsolutePath() + "love.png");
		try {
			FileOutputStream fos = new FileOutputStream(img);
			bm.compress(Bitmap.CompressFormat.PNG, 85, fos);
			fos.flush();
			fos.close();
			Toast.makeText(MainActivity.this, "成功了", Toast.LENGTH_SHORT).show();
			return Uri.fromFile(img);
		} catch (FileNotFoundException e) {
			Toast.makeText(MainActivity.this, "失敗了", Toast.LENGTH_SHORT).show();
			e.printStackTrace();
			return null;
		} catch (IOException e) {
			e.printStackTrace();
			Toast.makeText(MainActivity.this, "失敗了", Toast.LENGTH_SHORT).show();
			return null;
		}

	}

3.剪裁图片

	/**
	 * 剪裁图片
	 * 
	 * @param uri
	 */
	private void startImageZoom(Uri uri) {
		Intent intent = new Intent("com.android.camera.action.CROP");
		intent.setDataAndType(uri, "image/*");
		intent.putExtra("crop", "true");
		intent.putExtra("aspectX", 1);
		intent.putExtra("aspectY", 1);
		intent.putExtra("outputX", 150);
		intent.putExtra("outputY", 150);
		intent.putExtra("return-data", true);
		startActivityForResult(intent, CROP_REQUEST_CODE);
	}