Android手机拍照或选取图库图片作为头像

package zhangpgil.photo;
 
import java.io.file;
import android.support.v7.app.actionbaractivity;
import android.view.view;
import android.widget.button;
import android.widget.imageview;
import android.widget.toast;
import android.content.intent;
import android.graphics.bitmap;
import android.net.uri;
import android.os.bundle;
import android.os.environment;
import android.provider.mediastore;
 
public class mainactivity extends actionbaractivity {
 
  /* 头像文件 */
  private static final string image_file_name = "temp_head_image.jpg";
 
  /* 请求识别码 */
  private static final int code_gallery_request = 0xa0;
  private static final int code_camera_request = 0xa1;
  private static final int code_result_request = 0xa2;
 
  // 裁剪后图片的宽(x)和高(y),480 x 480的正方形。（生成bitmap貌似有时要报错？可试下把大小弄小点）
  private static int output_x = 480;
  private static int output_y = 480;
 
  private imageview headimage = null;
 
  @override
  protected void oncreate(bundle savedinstancestate) {
    super.oncreate(savedinstancestate);
    setcontentview(r.layout.activity_main);
 
    headimage = (imageview) findviewbyid(r.id.imageview);
 
    button buttonlocal = (button) findviewbyid(r.id.buttonlocal);
    buttonlocal.setonclicklistener(new view.onclicklistener() {
 
      @override
      public void onclick(view v) {
        choseheadimagefromgallery();
      }
    });
 
    button buttoncamera = (button) findviewbyid(r.id.buttoncamera);
    buttoncamera.setonclicklistener(new view.onclicklistener() {
 
      @override
      public void onclick(view v) {
        choseheadimagefromcameracapture();
      }
    });
  }
 
  // 从本地相册选取图片作为头像
  private void choseheadimagefromgallery() {
    intent intentfromgallery = new intent();
    // 设置文件类型
    intentfromgallery.settype("image/*");
    intentfromgallery.setaction(intent.action_get_content);
    startactivityforresult(intentfromgallery, code_gallery_request);
  }
 
  // 启动手机相机拍摄照片作为头像
  private void choseheadimagefromcameracapture() {
    intent intentfromcapture = new intent(mediastore.action_image_capture);
 
    // 判断存储卡是否可用，存储照片文件
    if (hassdcard()) {
      intentfromcapture.putextra(mediastore.extra_output, uri
          .fromfile(new file(environment
              .getexternalstoragedirectory(), image_file_name)));
    }
 
    startactivityforresult(intentfromcapture, code_camera_request);
  }
 
  @override
  protected void onactivityresult(int requestcode, int resultcode,
      intent intent) {
 
    // 用户没有进行有效的设置操作，返回
    if (resultcode == result_canceled) {
      toast.maketext(getapplication(), "取消", toast.length_long).show();
      return;
    }
 
    switch (requestcode) {
    case code_gallery_request:
      croprawphoto(intent.getdata());
      break;
 
    case code_camera_request:
      if (hassdcard()) {
        file tempfile = new file(
            environment.getexternalstoragedirectory(),
            image_file_name);
        croprawphoto(uri.fromfile(tempfile));
      } else {
        toast.maketext(getapplication(), "没有sdcard!", toast.length_long)
            .show();
      }
 
      break;
 
    case code_result_request:
      if (intent != null) {
        setimagetoheadview(intent);
      }
 
      break;
    }
 
    super.onactivityresult(requestcode, resultcode, intent);
  }
 
  /**
   * 裁剪原始的图片
   */
  public void croprawphoto(uri uri) {
 
    intent intent = new intent("com.android.camera.action.crop");
    intent.setdataandtype(uri, "image/*");
 
    // 设置裁剪
    intent.putextra("crop", "true");
 
    // aspectx , aspecty :宽高的比例
    intent.putextra("aspectx", 1);
    intent.putextra("aspecty", 1);
 
    // outputx , outputy : 裁剪图片宽高
    intent.putextra("outputx", output_x);
    intent.putextra("outputy", output_y);
    intent.putextra("return-data", true);
 
    startactivityforresult(intent, code_result_request);
  }
 
  /**
   * 提取保存裁剪之后的图片数据，并设置头像部分的view
   */
  private void setimagetoheadview(intent intent) {
    bundle extras = intent.getextras();
    if (extras != null) {
      bitmap photo = extras.getparcelable("data");
      headimage.setimagebitmap(photo);
    }
  }
 
  /**
   * 检查设备是否存在sdcard的工具方法
   */
  public static boolean hassdcard() {
    string state = environment.getexternalstoragestate();
    if (state.equals(environment.media_mounted)) {
      // 有存储的sdcard
      return true;
    } else {
      return false;
    }
  }
}

<linearlayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:orientation="vertical" >
 
  <imageview
    android:id="@+id/imageview"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:src="@drawable/ic_launcher" />
 
  <button
    android:id="@+id/buttonlocal"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="本地相册选取头像" />
 
  <button
    android:id="@+id/buttoncamera"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="手机拍照选取头像" />
 
</linearlayout>

以上所述就是本文的全部内容了，希望大家能够喜欢。