1.第一步在androidmanifest。xml中注册
2.第二步创建activity_creama.xml
3. 第三步创建cramaactivity
import java.io.ByteArrayOutputStream;import java.io.File;import java.text.SimpleDateFormat;import java.util.Date;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.util.Log;import android.view.Menu;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.ImageView;import android.widget.TextView;public class CramaActivity extends Activity { private Button creama=null; private ImageView img=null; private TextView text=null; private File tempFile = new File(Environment.getExternalStorageDirectory(), getPhotoFileName()); private static final int PHOTO_REQUEST_TAKEPHOTO = 1;// 拍照 private static final int PHOTO_REQUEST_GALLERY = 2;// 从相册中选择 private static final int PHOTO_REQUEST_CUT = 3;// 结果 @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_crama); init(); Log.i("TAG-->", ""+Environment.getExternalStorageDirectory()); } private void init() { // TODO Auto-generated method stub creama=(Button) findViewById(R.id.btn_creama); img=(ImageView) findViewById(R.id.img_creama); creama.setOnClickListener(listener); text=(TextView) findViewById(R.id.text); } protected void onActivityResult(int requestCode, int resultCode, Intent data) { switch (requestCode) { case PHOTO_REQUEST_TAKEPHOTO:// 当选择拍照时调用 startPhotoZoom(Uri.fromFile(tempFile)); break; case PHOTO_REQUEST_GALLERY:// 当选择从本地获取图片时 // 做非空判断，当我们觉得不满意想重新剪裁的时候便不会报异常，下同 if (data != null) startPhotoZoom(data.getData()); break; case PHOTO_REQUEST_CUT:// 返回的结果 if (data != null) // setPicToView(data); sentPicToNext(data); break; } super.onActivityResult(requestCode, resultCode, data); } private OnClickListener listener = new OnClickListener(){ @Override public void onClick(View arg0) { // TODO Auto-generated method stub Intent cameraintent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); // 指定调用相机拍照后照片的储存路径 cameraintent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(tempFile)); startActivityForResult(cameraintent, PHOTO_REQUEST_TAKEPHOTO); }}; private void startPhotoZoom(Uri uri) { Intent intent = new Intent("com.android.camera.action.CROP"); intent.setDataAndType(uri, "image/*"); // crop为true是设置在开启的intent中设置显示的view可以剪裁 intent.putExtra("crop", "true"); // aspectX aspectY 是宽高的比例 intent.putExtra("aspectX", 1); intent.putExtra("aspectY", 1); // outputX,outputY 是剪裁图片的宽高 intent.putExtra("outputX", 300); intent.putExtra("outputY", 300); intent.putExtra("return-data", true); intent.putExtra("noFaceDetection", true); startActivityForResult(intent, PHOTO_REQUEST_CUT); } // 将进行剪裁后的图片传递到下一个界面上 private void sentPicToNext(Intent picdata) { Bundle bundle = picdata.getExtras(); if (bundle != null) { Bitmap photo = bundle.getParcelable("data"); if (photo==null) { img.setImageResource(R.drawable.ic_launcher); }else { img.setImageBitmap(photo);// 设置文本内容为 图片绝对路径和名字 text.setText(tempFile.getAbsolutePath()); } ByteArrayOutputStream baos = null; try { baos = new ByteArrayOutputStream(); photo.compress(Bitmap.CompressFormat.JPEG, 100, baos); byte[] photodata = baos.toByteArray(); System.out.println(photodata.toString()); // Intent intent = new Intent(); // intent.setClass(RegisterActivity.this, ShowActivity.class); // intent.putExtra("photo", photodata); // startActivity(intent); // finish(); } catch (Exception e) { e.getStackTrace(); } finally { if (baos != null) { try { baos.close(); } catch (Exception e) { e.printStackTrace(); } } } } } // 使用系统当前日期加以调整作为照片的名称 private String getPhotoFileName() { Date date = new Date(System.currentTimeMillis()); SimpleDateFormat dateFormat = new SimpleDateFormat( "'IMG'_yyyyMMdd_HHmmss"); return dateFormat.format(date) + ".jpg"; }}
第二种方式，我们不需要剪裁，直接用：
androidmanifest注册
第二部：
xml文件添加一个imageview
activity代码
public class MainActivity extends Activity { GridView gridView; ImageView imageView; private Bitmap bitmap; final static int REQUEST_CODE_PICK_IMAGE = 1; final static int REQUEST_CODE_CAPTURE_CAMEIA = 2; protected void getImageFromAlbum() { Intent intent = new Intent(Intent.ACTION_PICK); intent.setType("image/*");//相片类型 startActivityForResult(intent, REQUEST_CODE_PICK_IMAGE); } protected void getImageFromCamera() { String state = Environment.getExternalStorageState(); if (state.equals(Environment.MEDIA_MOUNTED)) { Intent getImageByCamera = new Intent("android.media.action.IMAGE_CAPTURE"); startActivityForResult(getImageByCamera, REQUEST_CODE_CAPTURE_CAMEIA); } else { Toast.makeText(getApplicationContext(), "请确认已经插入SD卡", Toast.LENGTH_LONG).show(); } } @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); requestWindowFeature(Window.FEATURE_NO_TITLE); setContentView(R.layout.activity_main);// gridView = (GridView)findViewById(R.id.grid_view); imageView = (ImageView) findViewById(R.id.imageView); imageView.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { getImageFromAlbum(); } }); } @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { if (requestCode == REQUEST_CODE_PICK_IMAGE) { Uri uri = data.getData();// Bitmap bitmap = MediaStore.Images.Media.getBitmap(this.getContentResolver(), uri); try { Bitmap bitmap = MediaStore.Images.Media.getBitmap(this.getContentResolver(),uri); imageView.setImageBitmap(bitmap); } catch (IOException e) { e.printStackTrace(); } } else if (requestCode == REQUEST_CODE_CAPTURE_CAMEIA ) { Bundle extras = data.getExtras(); Bitmap map = (Bitmap)extras.get("data"); imageView.setImageBitmap(map); } }}