如何将照相机拍摄的照片添加到GridView [英] How to add picture taken by camera to GridView
本文介绍了如何将照相机拍摄的照片添加到GridView的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
在我的应用程序中，我拍照并保存，现在我想在gridView中显示它，并重复此过程来构建由我拍摄的某种画廊照片。它应该看起来像（第一个屏幕）：
所以一开始这个画廊应该是空的我会填写它。
这里是我已经得到的
public class GuidePhotoAlbum extends Activity {
private static final int TAKE_PICTURE = 1;
按钮button1;
私人Uri imageUri;
GridView gridview;
位图help1;
@Override
保护无效的onCreate（Bundle savedInstanceState）{
super.onCreate（savedInstanceState）;
this.requestWindowFeature（Window.FEATURE_NO_TITLE）;
this.getWindow（）。setFlags（WindowManager.LayoutParams.FLAG_FULLSCREEN，
WindowManager.LayoutParams.FLAG_FULLSCREEN）;
setContentView（R.layout.guide_photo_album）;
gridview =（GridView）findViewById（R.id.gridView）;
button1 =（Button）findViewById（R.id.buttonCam）;
// imageView =（ImageView）findViewById（R.id.imageView）;
button1.setOnClickListener（new View.OnClickListener（）{
@Override
public void onClick（View v）{
TakePictureIntent（）;
}
}）;
}
private void TakePictureIntent（）
{
int count = 0;
Intent takePictureIntent = new Intent（MediaStore.ACTION_IMAGE_CAPTURE）;
imageUri = Uri.fromFile（new File（Environment.getExternalStorageDirectory（），fname_+v+ count +。jpg））;
takePictureIntent.putExtra（MediaStore.EXTRA_OUTPUT，imageUri）;
startActivityForResult（takePictureIntent，TAKE_PICTURE）;
count ++;
$ b @Override
保护无效onActivityResult（int requestCode，int resultCode，Intent数据）
{
if（requestCode == TAKE_PICTURE）
{
if（resultCode == Activity.RESULT_OK）
{
try {
help1 = MediaStore.Images.Media.getBitmap（getContentResolver（），imageUri）;
//imageView.setImageBitmap(thumbnail.extractThumbnail(help1,help1.getWidth（），help1.getHeight（）））;
gridview.setAdapter（new ImageAdapter（this））;
} catch（Exception e）{
e.printStackTrace（）;
super.onActivityResult（requestCode，resultCode，data）;
$ b $ public class ImageAdapter extends BaseAdapter
{
public ImageAdapter（GuidePhotoAlbum guidePhotoAlbum）{
}
@Override
public int getCount（）{
return 0;
}
@Override
public Object getItem（int position）{
return null;
}
@Override
public long getItemId（int position）{
return 0;
}
@Override
public View getView（int position，View convertView，ViewGroup parent）{
return null;
$ b 不知道我该怎么做ImageAdapter添加此图片并显示它。还有一件事是，如果将会有大量的图像滚动。
这里XML到
<？xml version =1.0encoding =utf-8？>
< RelativeLayout xmlns：android =http://schemas.android.com/apk/res/android
xmlns：tools =http://schemas.android.com/tools
android：id =@ + id / guide_photo_album
android：layout_width =match_parent
android：layout_height =match_parent
android：paddingBottom =@ dimen / activity_vertical_margin
android：paddingLeft =@ dimen / activity_horizontal_margin
android：paddingRight =@ dimen / activity_horizontal_margin
android：paddingTop =@ dimen / activity_vertical_margin
tools：context = com.example.kylu.layout.GuidePhotoAlbum >
< LinearLayout
android：layout_width =match_parent
android：layout_height =match_parent
android：orientation =vertical>
< LinearLayout
android：layout_width =match_parent
android：orientation =horizontal
android：layout_height =0sp
android： layout_weight = 3 > b
$ b< GridView
android：layout_width =match_parent
android：layout_height =match_parent
android：id =@ + id / gridView
android：numColumns =3
android：horizontalSpacing =5dp
android：verticalSpacing =5dp
android：stretchMode =columnWidth>
< / GridView>
< / LinearLayout>
< LinearLayout
android：layout_width =match_parent
android：orientation =horizontal
android：layout_height =0sp
android： layout_weight = 1 >
< Button
android：text =Take Picture
android：layout_width =match_parent
android：layout_height =match_parent
android：onClick = onClick
android：id =@ + id / buttonCam/>
< / LinearLayout>
< / LinearLayout>
< / RelativeLayout>
PS对不起英语弱$
解决方案 通过以下方法获取由Camera拍摄的所有图像
public void List< String> ; getCameraImages（Context context）{
final String [] projection = {MediaStore.Images.Media.DATA};
final String selection = MediaStore.Images.Media.BUCKET_ID +=？;
final String [] selectionArgs = {CAMERA_IMAGE_BUCKET_ID};
final Cursor cursor = context.getContentResolver（）。query（Images.Media.EXTERNAL_CONTENT_URI，
projection，
selection，
selectionArgs，
null）;
ArrayList< String> result = new ArrayList< String>（cursor.getCount（））;
if（cursor.moveToFirst（））{
final int dataColumn = cursor.getColumnIndexOrThrow（MediaStore.Images.Media.DATA）;
do {
final String data = cursor.getString（dataColumn）;
result.add（data）;
} while（cursor.moveToNext（））;
}
cursor.close（）;
返回结果;
}
更改imageAdpater construtor like这个
public ImageAdapter（Context context，List< String> list）{
this.imageList = list ;
}
并将以下代码放在imageAdapter
getview方法中
ImageView imageView;
if（convertView == null）{//如果它没有被回收，则初始化一些属性
imageView = new ImageView（mContext）;
imageView.setLayoutParams（new GridView.LayoutParams（220，220））;
imageView.setScaleType（ImageView.ScaleType.CENTER_CROP）;
} else {
imageView =（ImageView）convertView;
}
位图bm = decodeSampledBitmapFromUri（itemList.get（position），220，220）;
imageView.setImageBitmap（bm）;
返回imageView;
in my app I take picture and save it, now I want display it in gridView and repeat this process to build some kind of gallery photos taken by me. It should looks like (First screen) :
So at the start this gallery should be emptny then I will fill it.
here is what I got already
public class GuidePhotoAlbum extends Activity {
private static final int TAKE_PICTURE = 1;
Button button1;
private Uri imageUri;
GridView gridview;
Bitmap help1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.requestWindowFeature(Window.FEATURE_NO_TITLE);
this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.guide_photo_album);
gridview = (GridView) findViewById(R.id.gridView);
button1 = (Button)findViewById(R.id.buttonCam);
//imageView = (ImageView)findViewById(R.id.imageView) ;
button1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
TakePictureIntent();
}
});
}
private void TakePictureIntent()
{
int count = 0;
Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
imageUri = Uri.fromFile(new File(Environment.getExternalStorageDirectory(),"fname_" +"v" +count+".jpg"));
takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT,imageUri);
startActivityForResult(takePictureIntent, TAKE_PICTURE);
count++;
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data)
{
if(requestCode == TAKE_PICTURE)
{
if(resultCode == Activity.RESULT_OK)
{
try {
help1 = MediaStore.Images.Media.getBitmap(getContentResolver(),imageUri);
//imageView.setImageBitmap(thumbnail.extractThumbnail(help1,help1.getWidth(),help1.getHeight()));
gridview.setAdapter(new ImageAdapter(this));
}catch (Exception e){
e.printStackTrace();
}
}
}
super.onActivityResult(requestCode, resultCode, data);
}
public class ImageAdapter extends BaseAdapter
{
public ImageAdapter(GuidePhotoAlbum guidePhotoAlbum) {
}
@Override
public int getCount() {
return 0;
}
@Override
public Object getItem(int position) {
return null;
}
@Override
public long getItemId(int position) {
return 0;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
return null;
}
}
Don't exactly know what should I do inside this ImageAdapter to add this picture and display it. One more thing If will be a lot of images it should scroll.
Here XML to
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/guide_photo_album"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.example.kylu.layout.GuidePhotoAlbum">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:orientation="horizontal"
android:layout_height="0sp"
android:layout_weight="3">
<GridView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/gridView"
android:numColumns="3"
android:horizontalSpacing="5dp"
android:verticalSpacing="5dp"
android:stretchMode="columnWidth">
</GridView>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:orientation="horizontal"
android:layout_height="0sp"
android:layout_weight="1">
<Button
android:text="Take Picture"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:onClick="onClick"
android:id="@+id/buttonCam" />
</LinearLayout>
</LinearLayout>
</RelativeLayout>
P.S Sorry for weak english
解决方案 Get All images shot by Camera by following method
public void List<String> getCameraImages(Context context) {
final String[] projection = { MediaStore.Images.Media.DATA };
final String selection = MediaStore.Images.Media.BUCKET_ID + " = ?";
final String[] selectionArgs = { CAMERA_IMAGE_BUCKET_ID };
final Cursor cursor = context.getContentResolver().query(Images.Media.EXTERNAL_CONTENT_URI,
projection,
selection,
selectionArgs,
null);
ArrayList<String> result = new ArrayList<String>(cursor.getCount());
if (cursor.moveToFirst()) {
final int dataColumn = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
do {
final String data = cursor.getString(dataColumn);
result.add(data);
} while (cursor.moveToNext());
}
cursor.close();
return result;
}
Change your imageAdpater construtor like this
public ImageAdapter(Context context,List<String>list) {
this.imageList = list;
}
and put following code in getview method of your imageAdapter
ImageView imageView;
if (convertView == null) { // if it's not recycled, initialize some attributes
imageView = new ImageView(mContext);
imageView.setLayoutParams(new GridView.LayoutParams(220, 220));
imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
} else {
imageView = (ImageView) convertView;
}
Bitmap bm = decodeSampledBitmapFromUri(itemList.get(position), 220, 220);
imageView.setImageBitmap(bm);
return imageView;
这篇关于如何将照相机拍摄的照片添加到GridView的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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