首先，我很抱歉我的英语，但我需要你的帮助。 我有一个带有照片和选项的recyclerView画廊，可以在另一个活动中显示所选照片。 我试图将活动的图像分享到某个地方，例如电子邮件，但我收到一条没有图片的空信息。 你能帮我弄清楚，我做错了什么？
以下是图库活动和单张图片活动的代码。
感谢您的回答。
public class MainActivity extends AppCompatActivity {
GalleryAdapter mAdapter;
RecyclerView mRecyclerView;
ArrayList<ImageModel> data = new ArrayList<>();
public static String getURLForResource(int resourceId) {
return Uri.parse("android.resource://" + R.class.getPackage().getName() + "/" + resourceId).toString();
}
public static String IMGS[];
public static String MAYF[] = {
"file:///android_asset/mayf1.jpg",
"file:///android_asset/mayf2.gif",
"file:///android_asset/mayf3.jpg",
"file:///android_asset/mayf4.jpg",
"file:///android_asset/mayf5.gif",
"file:///android_asset/mayf6.gif",
"file:///android_asset/mayf7.jpg",
"file:///android_asset/mayf8.jpg",
"file:///android_asset/mayf9.jpg",
"file:///android_asset/mayf10.jpg"
};
public static String APRF[] = {
"file:///android_asset/apr1.jpg",
"file:///android_asset/apr2.gif",
"file:///android_asset/apr3.jpg",
"file:///android_asset/apr4.jpg",
"file:///android_asset/apr5.gif",
"file:///android_asset/apr6.gif",
"file:///android_asset/apr7.jpg",
"file:///android_asset/apr8.jpg",
"file:///android_asset/apr9.jpg",
"file:///android_asset/apr10.jpg"
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
if (StartingActivity.count == 1)
IMGS = Arrays.copyOf(APRF, APRF.length);
else if (StartingActivity.count == 2) {
IMGS = Arrays.copyOf(MAYF, MAYF.length);
} else {
Toast.makeText(getBaseContext(), "not filled yet",
Toast.LENGTH_LONG).show();
}
for (int i = 0; i < IMGS.length; i++) {
ImageModel imageModel = new ImageModel();
imageModel.setName("Image " + i);
imageModel.setUrl(IMGS[i]);
data.add(imageModel);
}
mRecyclerView = (RecyclerView) findViewById(R.id.list);
mRecyclerView.setLayoutManager(new GridLayoutManager(this, 3));
mRecyclerView.setHasFixedSize(true);
mAdapter = new GalleryAdapter(MainActivity.this, data);
mRecyclerView.setAdapter(mAdapter);
mRecyclerView.addOnItemTouchListener(new RecyclerItemClickListener(this,
new RecyclerItemClickListener.OnItemClickListener() {
@Override
public void onItemClick(View view, int position) {
Intent intent = new Intent(MainActivity.this, DetailActivity.class);
intent.putParcelableArrayListExtra("data", data);
intent.putExtra("pos", position);
intent.putExtra("superUri", IMGS[position]);
startActivity(intent);
}
}));
}
@Override
public void onBackPressed() {
super.onBackPressed();
StartingActivity.count = 0;
}
}
此部分是单个图像的一部分。
public class DetailActivity extends AppCompatActivity {
/**
* The {@link android.support.v4.view.PagerAdapter} that will provide
* fragments for each of the sections. We use a
* {@link FragmentPagerAdapter} derivative, which will keep every
* loaded fragment in memory. If this becomes too memory intensive, it
* may be best to switch to a
* {@link android.support.v4.app.FragmentStatePagerAdapter}.
*/
private SectionsPagerAdapter mSectionsPagerAdapter;
private ShareActionProvider mShareActionProvider;
public ArrayList<ImageModel> data = new ArrayList<>();
int pos;
String shPos;
Toolbar toolbar;
/**
* The {@link ViewPager} that will host the section contents.
*/
private ViewPager mViewPager;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_detail);
//toolbar = (Toolbar) findViewById(R.id.detail_toolbar);
// setSupportActionBar(toolbar);
data = getIntent().getParcelableArrayListExtra("data");
pos = getIntent().getIntExtra("pos", 0);
shPos = getIntent().getStringExtra("superUri");
setTitle("Открытки");
// Create the adapter that will return a fragment for each of the three
// primary sections of the activity.
mSectionsPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager(), data);
// Set up the ViewPager with the sections adapter.
mViewPager = (ViewPager) findViewById(R.id.container);
mViewPager.setPageTransformer(true, new DepthPageTransformer());
mViewPager.setAdapter(mSectionsPagerAdapter);
mViewPager.setCurrentItem(pos);
mViewPager.addOnPageChangeListener(new ViewPager.OnPageChangeListener() {
@Override
public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
}
@Override
public void onPageSelected(int position) {
//noinspection ConstantConditions
//setTitle(data.get(position).getName());
}
@Override
public void onPageScrollStateChanged(int state) {
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_detail, menu);
// Fetch and store ShareActionProvider
// Return true to display menu
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
return super.onOptionsItemSelected(item);
}
public void onShClick(MenuItem item) {
Intent shareIntent = new Intent();
shareIntent.setAction(Intent.ACTION_SEND);
shareIntent.putExtra(Intent.EXTRA_STREAM, Uri.parse(shPos));
shareIntent.setType("image/*");
startActivity(shareIntent);
}
/**
* A {@link FragmentPagerAdapter} that returns a fragment corresponding to
* one of the sections/tabs/pages.
*/
public class SectionsPagerAdapter extends FragmentPagerAdapter {
public ArrayList<ImageModel> data = new ArrayList<>();
public SectionsPagerAdapter(FragmentManager fm, ArrayList<ImageModel> data) {
super(fm);
this.data = data;
}
@Override
public Fragment getItem(int position) {
// getItem is called to instantiate the fragment for the given page.
// Return a PlaceholderFragment (defined as a static inner class below).
return PlaceholderFragment.newInstance(position, data.get(position).getName(), data.get(position).getUri());
}
@Override
public int getCount() {
// Show 3 total pages.
return data.size();
}
@Override
public CharSequence getPageTitle(int position) {
return data.get(position).getName();
}
}
/**
* A placeholder fragment containing a simple view.
*/
public static class PlaceholderFragment extends Fragment {
/**
* The fragment argument representing the section number for this
* fragment.
*/
String name, url;
int pos;
private static final String ARG_SECTION_NUMBER = "section_number";
private static final String ARG_IMG_TITLE = "image_title";
private static final String ARG_IMG_URL = "image_url";
@Override
public void setArguments(Bundle args) {
super.setArguments(args);
this.pos = args.getInt(ARG_SECTION_NUMBER);
this.name = args.getString(ARG_IMG_TITLE);
this.url = args.getString(ARG_IMG_URL);
}
/**
* Returns a new instance of this fragment for the given section
* number.
*/
public static PlaceholderFragment newInstance(int sectionNumber, String name, String url) {
PlaceholderFragment fragment = new PlaceholderFragment();
Bundle args = new Bundle();
args.putInt(ARG_SECTION_NUMBER, sectionNumber);
args.putString(ARG_IMG_TITLE, name);
args.putString(ARG_IMG_URL, url);
fragment.setArguments(args);
return fragment;
}
public PlaceholderFragment() {
}
@Override
public void onStart() {
super.onStart();
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_detail, container, false);
final ImageView imageView = (ImageView) rootView.findViewById(R.id.detail_image);
Glide.with(getActivity()).load(url).thumbnail(0.1f).into(imageView);
return rootView;
}
}
}
以下是尝试通过Gmail共享图片的示例。我可以看到图像＆＃34;附加＆＃34;，但不能打开它。另一封电子邮件收到一条内部没有附件的空消息。 sharing example
