Android编程实现调用相册、相机及拍照后直接裁剪的方法

package com.cvte.health.phone;import java.io.File;import java.text.SimpleDateFormat;import java.util.Date;import android.app.Activity;import android.content.ContentResolver;import android.content.ContentUris;import android.content.Intent;import android.database.Cursor;import android.graphics.Bitmap;import android.graphics.drawable.Drawable;import android.net.Uri;import android.os.Bundle;import android.os.Environment;import android.provider.MediaStore;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.ImageView;import com.cvte.health.AccountManager;import com.cvte.health.HealthApplication;import com.cvte.health.R;import com.cvte.health.api.ImageUpdater;import com.cvte.health.database.User;public class ChangePortraitActivity extends Activity {  private ImageView mImageView;  private Button mButtonCamera;  private Button mButtonPhoto;  private Button mButtonBack;  private Button mButtonSave;  private User mUser = null;  private File mCurrentPhotoFile;  @Override  public void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.activity_change_portrait);    HealthApplication.getInstance().addActivity(this);    mUser = AccountManager.getInstance().getCurrentUser();    mImageView = (ImageView) this.findViewById(R.id.imageview_preview);    mButtonCamera = (Button) this.findViewById(R.id.button_cameraButton);    mButtonPhoto = (Button) this.findViewById(R.id.button_photoButton);    mButtonBack = (Button) findViewById(R.id.button_back);    mButtonSave = (Button) findViewById(R.id.button_save);    ImageUpdater.getInstance(this).updateUserPhoto(mUser, mImageView);    mButtonCamera.setOnClickListener(new OnClickListener() {      @Override      public void onClick(View v) {        Intent intent = new Intent("android.media.action.IMAGE_CAPTURE");        mCurrentPhotoFile = new File("mnt/sdcard/DCIM/Camera/",            getPhotoFileName());        intent.putExtra(MediaStore.EXTRA_OUTPUT,            Uri.fromFile(mCurrentPhotoFile));        startActivityForResult(intent, Activity.DEFAULT_KEYS_DIALER);        /*         * Intent intent = new         * Intent("android.media.action.IMAGE_CAPTURE");         * intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(new         * File(Environment .getExternalStorageDirectory(),         * "camera.jpg")));         * intent.putExtra(MediaStore.EXTRA_VIDEO_QUALITY, 0);         * startActivityForResult(intent, 10);         */      }    });    mButtonPhoto.setOnClickListener(new OnClickListener() {      @Override      public void onClick(View v) {        Intent intent = new Intent(Intent.ACTION_GET_CONTENT);        intent.addCategory(Intent.CATEGORY_OPENABLE);        intent.setType("image/*");        intent.putExtra("crop", "true");        intent.putExtra("aspectX", 1);        intent.putExtra("aspectY", 1);        intent.putExtra("outputX", 300);        intent.putExtra("outputY", 300);        intent.putExtra("return-data", true);        startActivityForResult(intent, 11);      }    });    mButtonBack.setOnClickListener(new OnClickListener() {      @Override      public void onClick(View v) {        finish();      }    });    mButtonSave.setOnClickListener(new OnClickListener() {      @Override      public void onClick(View v) {        Intent intent = new Intent(ChangePortraitActivity.this,            UserProfileActivity.class);        mImageView.setDrawingCacheEnabled(Boolean.TRUE);        intent.putExtra("BITMAP", mImageView.getDrawingCache()); // 这里可以放一个bitmap        startActivity(intent);        finish();        overridePendingTransition(R.anim.activity_in_from_left,            R.anim.activity_out_from_right);      }    });  }  @Override  protected void onActivityResult(int requestCode, int resultCode, Intent data) {    if (requestCode == 10 && resultCode == Activity.RESULT_OK) {      mImageView.setImageDrawable(Drawable.createFromPath(new File(          Environment.getExternalStorageDirectory(), "camera.jpg")          .getAbsolutePath()));    } else if (requestCode == 11 && resultCode == Activity.RESULT_OK) {      Bitmap cameraBitmap = (Bitmap) data.getExtras().get("data");      mImageView.setImageBitmap(cameraBitmap);    } else if (requestCode == 1 && resultCode == Activity.RESULT_OK) {      Uri imgUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;      ContentResolver cr = ChangePortraitActivity.this          .getContentResolver();      Uri fileUri = Uri.fromFile(mCurrentPhotoFile);      sendBroadcast(new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE,          fileUri));      try {        Thread.sleep(3000);      } catch (InterruptedException e) {        e.printStackTrace();      }      Cursor cursor = cr.query(imgUri, null,          MediaStore.Images.Media.DISPLAY_NAME + "='"              + mCurrentPhotoFile.getName() + "'", null, null);      Uri uri = null;      if (cursor != null && cursor.getCount() > 0) {        cursor.moveToLast();        long id = cursor.getLong(0);        uri = ContentUris.withAppendedId(imgUri, id);      }      final 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", 300);      intent.putExtra("outputY", 300);      intent.putExtra("return-data", true);      ChangePortraitActivity.this.startActivityForResult(intent, 3);    } else if (requestCode == 3 && resultCode == Activity.RESULT_OK) {      Bitmap cameraBitmap = (Bitmap) data.getExtras().get("data");      mImageView.setImageBitmap(cameraBitmap);    }  }  private String getPhotoFileName() {    Date date = new Date(System.currentTimeMillis());    SimpleDateFormat dateFormat = new SimpleDateFormat(        "'IMG'_yyyyMMdd_HHmmss");    return dateFormat.format(date) + ".jpg";  }}