android 选择图片 剪裁 拍照 兼容所有版本的代码

   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;

@Overrideprotected 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);}

4.结束语：

记得加权限哦 ，在剪裁完图片后 会有一个 Bitmap 对象。你可以拿来设置到ImageView上面去。也可以直接传送到服务器去。有问题的话 请留言