Android的媒体传递到另一个数据活动 [英] android pass media data to another activity

问题描述

可能重复：结果
  <一href=\"http://stackoverflow.com/questions/11519691/passing-image-from-one-activity-another-activity\">Passing从一个活动另一个活动图片

我的应用程序使用以下逻辑：点击一个按钮在活动A开始的手机摄像头，照片/视频拍摄后（用户$ P $摄像机窗口pssed拯救）活动B开始。该活动B包含拍摄的照片/视频，并通过HTTP请求上传的媒体数据的可能性的preVIEW。我不知道如何通过拍摄的图像/视频到活动B ..在活动A，我不能StartActivityForResult启动相机，因为结果必须被传递到活动B.任何浩这样做的想法？

my app uses following logic: a button click in Activity A starts the phone camera, after a picture/video is taken (the user pressed "save" in the camera window) Activity B starts. That Activity B contains a preview of taken picture/video and the possibility to upload the media data via a http request. I'm not sure how to pass the taken Image/Video to Activity B.. I can't launch the camera with StartActivityForResult in Activity A since the result must be delivered to Activity B. Any ideas ho to do that?

推荐答案

有3解决方案来解决这个问题。

There are 3 Solutions to solve this issue.

1）首先转换图像成字节数组，然后传递到意向，并在接下来的活动获得捆绑字节数组转换为图像（位图），并设置成ImageView的。

1) First Convert Image into Byte Array and then pass into Intent and in next activity get byte array from Bundle and Convert into Image(Bitmap) and set into ImageView.

位图转换为字节数组： -

Convert Bitmap to Byte Array:-

Bitmap bmp = BitmapFactory.decodeResource(getResources(), R.drawable.ic_launcher);
ByteArrayOutputStream stream = new ByteArrayOutputStream();
bmp.compress(Bitmap.CompressFormat.PNG, 100, stream);
byte[] byteArray = stream.toByteArray();

传递字节数组到意图： -

Pass byte array into intent:-

Intent intent = new Intent(this, NextActivity.class);
intent.putExtra("picture", byteArray);
startActivity(intent);

从包中获取字节数组转换成位图图像： -

Get Byte Array from Bundle and Convert into Bitmap Image:-

Bundle extras = getIntent().getExtras();
byte[] byteArray = extras.getByteArray("picture");

Bitmap bmp = BitmapFactory.decodeByteArray(byteArray, 0, byteArray.length);
ImageView image = (ImageView) findViewById(R.id.imageView1);

image.setImageBitmap(bmp);

2）先保存图像到SD卡，并设置该图像为ImageView的。下一活动

2) First Save image into SDCard and in next activity set this image into ImageView.

3）通入位图和意图，从包下一个活动得到的位图，但问题是，如果你的位图/图像大小是当时的形象是不是在明年的活动装载大了。

3) Pass Bitmap into Intent and get bitmap in next activity from bundle, but the problem is if your Bitmap/Image size is big at that time the image is not load in next activity.

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