Android开发实现的Intent跳转工具类实例

本文实例讲述了android开发实现的intent跳转工具类。分享给大家供大家参考，具体如下：

一、概述

intent的中文意思是“意图，意向”，在android中提供了intent机制来协助应用间的交互与通讯，intent负责对应用中一次操作的动作、动作涉及数据、附加数据进行描述，android则根据此intent的描述，负责找到对应的组件，将 intent传递给调用的组件，并完成组件的调用。intent不仅可用于应用程序之间，也可用于应用程序内部的activity/service之间的交互。因此，可以将intent理解为不同组件之间通信的“媒介”专门提供组件互相调用的相关信息。

intent可以启动一个activity，也可以启动一个service，还可以发起一个广播broadcasts。

二、intent跳转工具类代码

/**
 * 进行页面跳转的工具
 *
 * @author chen.lin
 *
 */
public class intentutil {
  private static final string image_type = "image/*";
  private static final string tag = "intentutil";
  /**
   * 进行页面跳转
   *
   * @param clzz
   */
  public static void showintent(activity context, class<?> clzz, string[] keys, string[] values) {
    intent intent = new intent(context, clzz);
    if (values != null && values.length > 0) {
      for (int i = 0; i < values.length; i++) {
        if (!textutils.isempty(keys[i]) && !textutils.isempty(values[i])) {
          intent.putextra(keys[i], values[i]);
        }
      }
    }
    context.startactivity(intent);
  }
  public static void showintent(activity context, class<?> clzz) {
    showintent(context, clzz, null, null);
  }
  /**
   * 打电话
   *
   * @param intent
   * @param context
   * @param tel
   */
  public static void opencall(context context, string tel) {
    tel = tel.replaceall("-", "");
    intent intent = new intent();
    // 激活源代码,添加intent对象
    intent.setaction("android.intent.action.call");
    intent.setdata(uri.parse("tel:" + tel));
    intent.setflags(intent.flag_activity_clear_top);
    context.startactivity(intent);
  }
  /***
   * 从相册中取图片
   */
  public static void pickphoto(activity context, int requestcode) {
    intent intent = new intent();
    intent.settype("image/*");
    intent.setaction(intent.action_get_content);
    context.startactivityforresult(intent, requestcode);
  }
  /**
   * 拍照获取图片
   */
  public static void takephoto(activity context, int requestcode, uri camerauri) {
    // 执行拍照前，应该先判断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"
      logger.i(tag, "camerauri.path------>" + camerauri.getpath());
      intent.putextra(android.provider.mediastore.extra_output, camerauri);
      context.startactivityforresult(intent, requestcode);
    } else {
      toast.maketext(context, "内存卡不存在", toast.length_long).show();
    }
  }
  /**
   * 拍照
   *
   * @param context
   * @param uri
   */
  public static void takephoto(activity context, uri uri, int requestcode) {
    if (environment.getexternalstoragestate().equals(environment.media_mounted)) {
      intent intent = new intent("android.media.action.image_capture");
      contentvalues values = new contentvalues();
      values.put(mediastore.images.media.display_name, string.valueof(system.currenttimemillis()) + ".jpg");
      values.put(mediastore.images.media.mime_type, "image/*");
      uri = context.getcontentresolver().insert(mediastore.images.media.external_content_uri, values);
      // intent.putextra(mediastore.images.media.orientation, 0);
      intent.putextra(mediastore.extra_output, uri);
      context.startactivityforresult(intent, requestcode);
    } else {
      toast.maketext(context, "内存卡不存在", toast.length_long).show();
    }
  }
  /**
   * 本地照片调用
   *
   * @param context
   * @param requestcode
   */
  public void openphotos(activity context, int requestcode) {
    if (openphotosnormal(context, requestcode) //
        && openphotosbrowser(context, requestcode) //
        && openphotosfinally(context))
      ;
  }
  /**
   * 这个是找不到相关的图片浏览器,或者相册
   */
  private boolean openphotosfinally(activity context) {
    toast.maketext(context, "您的系统没有文件浏览器或则相册支持,请安装！", toast.length_long).show();
    return false;
  }
  /**
   * 获取从本地图库返回来的时候的uri解析出来的文件路径
   *
   * @return
   */
  public static string getphotopathbylocaluri(context context, intent data) {
    uri photouri = data.getdata();
    string[] filepathcolumn = { mediastore.images.media.data };
    cursor cursor = context.getcontentresolver().query(photouri, filepathcolumn, null, null, null);
    cursor.movetofirst();
    int columnindex = cursor.getcolumnindex(filepathcolumn[0]);
    string picturepath = cursor.getstring(columnindex);
    cursor.close();
    return picturepath;
  }
  /**
   * popupmenu打开本地相册.
   */
  private boolean openphotosnormal(activity activity, int actresultcode) {
    intent intent = new intent(intent.action_pick, null);
    intent.setdataandtype(mediastore.images.media.external_content_uri, image_type);
    try {
      activity.startactivityforresult(intent, actresultcode);
    } catch (android.content.activitynotfoundexception e) {
      return true;
    }
    return false;
  }
  /**
   * 打开其他的一文件浏览器,如果没有本地相册的话
   */
  private boolean openphotosbrowser(activity activity, int requestcode) {
    toast.maketext(activity, "没有相册软件，运行文件浏览器", toast.length_long).show();
    intent intent = new intent(intent.action_get_content); // "android.intent.action.get_content"
    intent.settype(image_type); // 查看类型 string image_unspecified =
                  // "image/*";
    intent wrapperintent = intent.createchooser(intent, null);
    try {
      activity.startactivityforresult(wrapperintent, requestcode);
    } catch (android.content.activitynotfoundexception e1) {
      return true;
    }
    return false;
  }
  /**
   * 打开照相机
   *
   * @param activity
   *      当前的activity
   * @param requestcode
   *      拍照成功时activity forresult 的时候的requestcode
   * @param photofile
   *      拍照完毕时,图片保存的位置
   */
  @suppresslint("simpledateformat")
  public static uri opencamera(activity context, int requestcode) {
    // 执行拍照前，应该先判断sd卡是否存在
    if (environment.getexternalstoragestate().equals(environment.media_mounted)) {
      intent intent = new intent(mediastore.action_image_capture);
      simpledateformat timestampformat = new simpledateformat("yyyy_mm_dd_hh_mm_ss");
      string filename = timestampformat.format(new date());
      contentvalues values = new contentvalues();
      values.put(mediastore.images.media.title, filename);
      uri photouri = context.getcontentresolver().insert(mediastore.images.media.external_content_uri, values);
      intent.putextra(mediastore.extra_output, photouri);
      context.startactivityforresult(intent, requestcode);
      return photouri;
    } else {
      toast.maketext(context, "内存卡不存在", toast.length_long).show();
    }
    return null;
  }
  /**
   * 选择图片后，获取图片的路径
   *
   * @param requestcode
   * @param data
   */
  public static void dophoto(activity context, intent data, int requestcode, int value, edittext edittext,
      imageview imageview, uri photouri) {
    // 从相册取图片，有些手机有异常情况，请注意
    if (requestcode == value) {
      if (data == null) {
        toast.maketext(context, "选择图片文件出错", toast.length_long).show();
        return;
      }
      photouri = data.getdata();
      if (photouri == null) {
        toast.maketext(context, "选择图片文件出错", toast.length_long).show();
        return;
      }
    }
    string[] pojo = { mediastore.images.media.data, mediastore.images.media.display_name };
    contentresolver resolver = context.getcontentresolver();
    cursor cursor = resolver.query(photouri, pojo, null, null, null);
    string picpath = null;
    string filename = null;
    if (cursor != null) {
      int columnindex = cursor.getcolumnindexorthrow(pojo[0]);
      cursor.movetofirst();
      picpath = cursor.getstring(columnindex);
      filename = cursor.getstring(cursor.getcolumnindexorthrow(pojo[1]));
      edittext.requestfocus();
      edittext.settext(filename);
      cursor.close();
    }
    string dix = filename.substring(filename.lastindexof("."), filename.length());
    if (filename != null
        && (dix.equalsignorecase(".png") || dix.equalsignorecase(".jpg") || dix.equalsignorecase(".gif")
            || dix.equalsignorecase(".bmp") || dix.equalsignorecase(".jpeg") || dix
              .equalsignorecase(".tiff"))) {
      // lastintent.putextra(key_photo_path, picpath);
      imageview.setvisibility(view.visible);
      imageview.setimageuri(uri.parse(picpath));
    } else {
      imageview.setvisibility(view.gone);
      toast.maketext(context, "选择图片文件不正确", toast.length_long).show();
    }
  }
  /**
   * flag_activity_single_top
   * //当于加载模式中的singletop,在当前中的activity中转到当前activity，不增加新的
   *
   * @param file
   */
  public static void openfile(context context, file file) {
    intent intent = new intent();
    intent.addflags(intent.flag_activity_new_task);// 默认的跳转类型,它会重新创建一个新的activity
    intent.setaction(android.content.intent.action_view);
    // 调用getmimetype()来取得mimetype
    string type = fileutil.getmimetype(file);
    // 设置intent的file与mimetype
    intent.setdataandtype(uri.fromfile(file), type);
    context.startactivity(intent);
  }
  /**
   * 截取图片
   *
   * @param uri
   * @param outputx
   * @param outputy
   * @param requestcode
   */
  public static void cropimage(activity context, uri uri, int outputx, int outputy, int requestcode) {
    // 裁剪图片意图
    intent intent = new intent("com.android.camera.action.crop");
    intent.setdataandtype(uri, "image/*");
    intent.putextra("crop", "true");
    // 裁剪框的比例，1：1
    intent.putextra("aspectx", 1);
    intent.putextra("aspecty", 1);
    // 裁剪后输出图片的尺寸大小
    intent.putextra("outputx", outputx);
    intent.putextra("outputy", outputy);
    // 图片格式
    intent.putextra("outputformat", "jpeg");
    intent.putextra("nofacedetection", true);
    intent.putextra("return-data", true);
    context.startactivityforresult(intent, requestcode);
  }
  /**
   * 获取图片的旋转角度
   *
   * @param path
   * @return
   */
  public static int readpicturedegree(string path) {
    int degree = 0;
    try {
      exifinterface exifinterface = new exifinterface(path);
      int orientation = exifinterface.getattributeint(exifinterface.tag_orientation,
          exifinterface.orientation_normal);
      switch (orientation) {
      case exifinterface.orientation_rotate_90:
        degree = 90;
        break;
      case exifinterface.orientation_rotate_180:
        degree = 180;
        break;
      case exifinterface.orientation_rotate_270:
        degree = 270;
        break;
      }
    } catch (ioexception e) {
      e.printstacktrace();
    }
    return degree;
  }
  /**
   * 保存文件
   *
   * @param context
   * @param data
   * @param requestcode
   * @param imageview
   */
  public static void saveimage(activity context, intent data, int requestcode, imageview imageview) {
    bitmap photo = null;
    uri photouri = data.getdata();
    cropimage(context, photouri, 500, 500, requestcode);
    if (photouri != null) {
      photo = bitmapfactory.decodefile(photouri.getpath());
    }
    if (photo == null) {
      bundle extra = data.getextras();
      if (extra != null) {
        photo = (bitmap) extra.get("data");
        bytearrayoutputstream stream = new bytearrayoutputstream();
        photo.compress(bitmap.compressformat.jpeg, 100, stream);
      }
    }
    imageview.setimagebitmap(photo);
  }
  /**
   * 保存照相后的图片
   *
   * @param context
   * @param requestcode
   * @param spath
   * @return
   */
  public static boolean savecamera(activity context, intent data, uri camerauri, edittext edittext,
      imageview imageview) {
    try {
      final bundle extras = data.getextras();
      if (extras != null) {
        bitmap photo = extras.getparcelable("data");
        imageview.setimagebitmap(photo);
      }
      if (camerauri != null) {
        string path = camerauri.getpath();
        logger.i(tag, "path-->" + path);
        string filename = path.substring(path.lastindexof("/") + 1, path.length());
        edittext.settext(filename);
      }
    } catch (exception e) {
      e.printstacktrace();
      return false;
    }
    return true;
  }
}

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