gpt4 book ai didi

java - 从相机捕获图像并将其显示在android的另一个 Activity 中

转载 作者:行者123 更新时间:2023-11-30 02:38:06 30 4
gpt4 key购买 nike

我正在开发一个应用程序,我想在其中从相机捕获图像并将其显示在 ImageView 的另一个 Activity 中,我的问题是能够捕获图像但捕获后我被重定向到第一个 Activity 而不是第二个。

这是我的代码..PictureOptions.java

public void buttonCameraOpen(View view)
{
// create Intent to take a picture and return control to the calling application
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);

fileUri = getOutputMediaFileUri(MEDIA_TYPE_IMAGE); // create a file to save the image
intent.putExtra(MediaStore.EXTRA_OUTPUT, fileUri); // set the image file name

// start the image capture Intent
startActivityForResult(intent, CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE);
}

private static Uri getOutputMediaFileUri(int type){
return Uri.fromFile(getOutputMediaFile(type));
}

/** Create a File for saving an image or video */
private static File getOutputMediaFile(int type){
// To be safe, you should check that the SDCard is mounted
// using Environment.getExternalStorageState() before doing this.

File mediaStorageDir = new File(Environment.getExternalStoragePublicDirectory(
Environment.DIRECTORY_PICTURES), "Easy Heal");
// This location works best if you want the created images to be shared
// between applications and persist after your app has been uninstalled.

// Create the storage directory if it does not exist
if (! mediaStorageDir.exists()){
if (! mediaStorageDir.mkdirs()){
Log.d("MyCameraApp", "failed to create directory");
return null;
}
}

// Create a media file name
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
File mediaFile;
if (type == MEDIA_TYPE_IMAGE){
mediaFile = new File(mediaStorageDir.getPath() + File.separator +
"IMG_"+ timeStamp + ".jpg");
} else {
return null;
}

return mediaFile;
}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
Bitmap selectedphoto = null;

super.onActivityResult(requestCode, resultCode, data);

if (requestCode == CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE && resultCode == RESULT_OK && null!=data) {

// Image captured and saved to fileUri specified in the Intent
//selectedphoto = (Bitmap) data.getExtras().get("data");
Uri selectedImage = data.getData();
String [] filePathColumn = {MediaStore.Images.Media.DATA};
Cursor cursor = getContentResolver().query(selectedImage, filePathColumn, null, null, null);
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
String filePath = cursor.getString(columnIndex);
File f =new File(filePath);
String filename = f.getName();
cursor.close();
selectedphoto = BitmapFactory.decodeFile(filePath);

Intent intent = new Intent(PictureOptions.this,ShowImage.class);
//intent.putExtra("data", selectedphoto);
intent.setData( selectedImage );
startActivity(intent);
} else if (resultCode == RESULT_CANCELED) {
// User cancelled the image capture
} else {
// Image capture failed, advise user
}

}

PictureOptions.xml

<Button
android:id="@+id/buttonCameraOpen"
android:layout_width="fill_parent"
android:layout_height="72dp"
android:layout_weight="0.35"
android:onClick="buttonCameraOpen"
android:text="@string/button_camera_open" />

ShowImage.java

protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_show_image);
ImageView imageview = (ImageView)findViewById(R.id.ImageShow);
Uri imageUri = getIntent().getData();
//Bitmap selectedphoto =(Bitmap)this.getIntent().getParcelableExtra("data");
imageview.setImageURI(imageUri);
}

ShowImage.xml

 <ImageView
android:id="@+id/ImageShow"
android:layout_width="fill_parent"
android:layout_height="fill_parent" />

最佳答案

我终于找到了一个很棒的解决方案此库用于从相机捕获图像或从图库中选择图像,并在 onActivityResult 方法中以 File 格式返回图像,可在应用程序中进一步使用。使用

EasyImage Library

关于java - 从相机捕获图像并将其显示在android的另一个 Activity 中,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/26190395/

30 4 0
Copyright 2021 - 2024 cfsdn All Rights Reserved 蜀ICP备2022000587号
广告合作:1813099741@qq.com 6ren.com