Android摄像头意图创建两个文件 [英] Android Camera intent creating two files

问题描述

我想提出一个程序，它需要的图片，然后显示它的缩略图。 使用仿真器时一切顺利，并丢弃按钮删除照片。 但是，一个真正的设备上的摄像头故意将图像保存在imageUri变量，第二个名为如果我刚打开了摄像头，并拍了照片本身等。

 私有静态最终诠释CAMERA_PIC_REQUEST = 1337;
/ **第一次创建活动时调用。 * /
@覆盖
公共无效的onCreate（包savedInstanceState）{
    super.onCreate（savedInstanceState）;
    的setContentView（R.layout.camera）;

    //启动相机
    值=新ContentValues​​（）;
    values​​.put（MediaStore.Images.Media.TITLE，新画面）;
    values​​.put（MediaStore.Images.Media.DESCRIPTION，从你的相机）;
    。imageUri = getContentResolver（）插入（MediaStore.Images.Media.EXTERNAL_CONTENT_URI，价值观）;
    图像=（ImageView的）findViewById（R.id.ImageView01）;
    意向意图=新的意图（MediaStore.ACTION_IM​​AGE_CAPTURE）;
    intent.putExtra（MediaStore.EXTRA_OUTPUT，imageUri）;
    startActivityForResult（意向，CAMERA_PIC_REQUEST）;


    //保存图像按钮
    按钮保存=（按钮）findViewById（R.id.Button01）;
    按钮，关闭=（按钮）findViewById（R.id.Button02）;
}

@覆盖
保护无效onActivityResult（INT申请code，INT结果code，意图数据）{
    如果（要求code == CAMERA_PIC_REQUEST和放大器;＆安培;结果code == RESULT_OK）{
        尝试{
            缩略图= MediaStore.Images.Media.getBitmap（getContentResolver（），imageUri）;
            image.setImageBitmap（缩略图）;
        }
        赶上（例外五）{
            e.printStackTrace（）;
        }
    }
     其他{
         完（）;
     }
}

公共无效myClickHandler（查看视图）{
    开关（view.getId（））{
    案例R.id.Button01：
        完（）;
        打破;
    案例R.id.Button02：
        dicard（）;
    }
}

私人无效dicard（）{
    。getContentResolver（）删除（imageUri，NULL，NULL）;
    完（）;
}
 

解决方案

有些Android手机存储原始照片中的画廊，只有在自己的位置的缩略图。这不要紧，你就与原来的要求是什么。我有两个不同的HTC手机做这件事，而其他品牌的转换不这样做。

我这解决了另一种方式。我跑在画廊的每个项目的查询和加载的BucketIDs到一个数组。我这样做的时候，我的应用程序启动相机应用。当相机应用的回报，我做出同样的查询（与项目最近添加的，以节省时间）。我比较这对我原来的列表，找到新的BucketID。接着，我比较这图象与I明确地设置为输出的文件的大小。如果它是更大的，我把它复制，替换我了。然后，我删除了文件，并从库中删除。

疼痛的你知道是什么！

我不得不再次改变这个，当我发现一个电话，没有保持独特的桶的ID ...查看我的链接后​​下面这个答案更多。

I am making a program that takes a picture and then shows it's thumbnail. When using the emulator all goes well and the discard button deletes the photo. But on a real device the camera intent saves the image at the imageUri variable and a second one that is named like if I had just opened up the camera and took a picture by itself.

private static final int CAMERA_PIC_REQUEST = 1337;  
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.camera);

    //start camera
    values = new ContentValues();
    values.put(MediaStore.Images.Media.TITLE, "New Picture");
    values.put(MediaStore.Images.Media.DESCRIPTION,"From your Camera");
    imageUri = getContentResolver().insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values);
    image = (ImageView) findViewById(R.id.ImageView01);
    Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
    intent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);
    startActivityForResult(intent, CAMERA_PIC_REQUEST);


    //save the image buttons
    Button save = (Button) findViewById(R.id.Button01);
    Button close = (Button) findViewById(R.id.Button02);
}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (requestCode == CAMERA_PIC_REQUEST && resultCode == RESULT_OK) {
        try{
            thumbnail = MediaStore.Images.Media.getBitmap(getContentResolver(), imageUri);
            image.setImageBitmap(thumbnail);
        }
        catch(Exception e){
            e.printStackTrace();
        }
    }
     else{
         finish();
     }
}

public void myClickHandler(View view) {
    switch (view.getId()) {
    case R.id.Button01:
        finish();
        break;
    case R.id.Button02:
        dicard();
    }
}

private void dicard(){
    getContentResolver().delete(imageUri, null, null);
    finish();
}

解决方案

Some Android phones store the original photo in the gallery, and a thumbnail only in your location. It doesn't matter what you did with the original request. I have two different HTC phones doing it, and a slew of other brands not doing it.

I solved this another way. I ran a query of every item in the gallery and loaded the BucketIDs to an array. I do this when my app starts the camera app. When the camera app returns, I make the same query (with items recently added to save time). I compare this to my original list and find the new BucketID. Next, I compare the size of this image with the file I explicitly set as the output. If it's bigger, I copy it, replacing what I had. Then I delete the file and remove it from the gallery.

Pain in the you-know-what!

[EDIT] I had to change this around again when I discovered a phone that didn't keep unique bucket IDs... See my post in the link following this answer for more.

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