Android实现拍照、选择相册图片并裁剪功能

通过拍照或相册中获取图片，并进行裁剪操作，然后把图片显示到ImageView上。
 当然也可以上传到服务器（项目中绝大部分情况是上传到服务器），参考网上资料及结合项目实际情况，
 测试了多款手机暂时没有发现严重问题。代码有注释，直接贴代码：

public class UploadPicActivity extends Activity implements View.onClickListener {
 private Button take_photo_btn;
 private Button select_photo_btn;
 private ImageView photo_iv;
 //使用照相机拍照获取图片
 public static final int TAKE_PHOTO_CODE = 1;
 //使用相册中的图片
 public static final int SELECT_PIC_CODE = 2;
 //图片裁剪
 private static final int PHOTO_CROP_CODE = 3;
 //定义图片的Uri
 private Uri photoUri;
 //图片文件路径
 private String picPath;

 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_upload_pic);
  initViews();
 }

 private void initViews() {
  this.take_photo_btn = (Button) findViewById(R.id.take_photo_btn);
  this.take_photo_btn.setonClickListener(this);
  this.select_photo_btn = (Button) findViewById(R.id.select_photo_btn);
  this.select_photo_btn.setonClickListener(this);
  this.photo_iv = (ImageView) findViewById(R.id.photo_iv);
 }

 @Override
 public void onClick(View view) {
  switch (view.getId()) {
   //拍照
   case R.id.take_photo_btn:
    picTyTakePhoto();
    break;
   //选择图库
   case R.id.select_photo_btn:
    pickPhoto();
    break;
  }
 }

 
 private void picTyTakePhoto() {
  //判断SD卡是否存在
  String SDState = Environment.getExternalStorageState();
  if (SDState.equals(Environment.MEDIA_MOUNTED)) {
   Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);//"android.media.action.IMAGE_CAPTURE"

   ContentValues values = new ContentValues();
   photoUri = getContentResolver().insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values);
   intent.putExtra(android.provider.MediaStore.EXTRA_OUTPUT, photoUri);
   startActivityForResult(intent, TAKE_PHOTO_CODE);
  } else {
   Toast.makeText(this, "内存卡不存在", Toast.LENGTH_LONG).show();
  }
 }

 
 private void pickPhoto() {
  Intent intent = new Intent(Intent.ACTION_PICK, null);
  intent.setDataAndType(MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
    "image
 private void startPhotoZoom(Uri uri, int REQUE_CODE_CROP) {
  Intent intent = new Intent("com.android.camera.action.CROP");
  intent.setDataAndType(uri, "image
 private String uriToFilePath(Uri uri) {
  //获取图片数据
  String[] proj = {MediaStore.Images.Media.DATA};
  //查询
  Cursor cursor = managedQuery(uri, proj, null, null, null);
  //获得用户选择的图片的索引值
  int image_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
  cursor.moveToFirst();
  //返回图片路径
  return cursor.getString(image_index);
 }
}

布局文件长这样：

最后不要忘记在AndroidManifest.xml中添加UploadPicActivity及权限：

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持考高分网。