Android编程实现调用相册、相机及拍照后直接裁剪的方法

本文实例讲述了android编程实现调用相册、相机及拍照后直接裁剪的方法。分享给大家供大家参考，具体如下：

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";
  }
}

更多关于android相关内容感兴趣的读者可查看本站专题：《android拍照与图片处理技巧总结》、《android图形与图像处理技巧总结》、《android开发入门与进阶教程》、《android调试技巧与常见问题解决方法汇总》、《android基本组件用法总结》、《android视图view技巧总结》、《android布局layout技巧总结》及《android控件用法总结》

希望本文所述对大家android程序设计有所帮助。