Question

我想使用代码分享图片：

Intent sharingIntent = new Intent(Intent.ACTION_SEND);
Uri imageUri = Uri.parse("http://stacktoheap.com/images/stackoverflow.png");
sharingIntent.setType("image/png");
sharingIntent.putExtra(Intent.EXTRA_STREAM, imageUri);
startActivity(sharingIntent);

我做了一个调用上面代码的按钮。共享意图打开但我点击“通过彩信共享”：“无法将此图片添加到您的消息”。如果Facebook我只有一个没有我的照片的文本区域。

Answer 1

@ eclass答案的改编版本，不需要使用ImageView：

使用Picasso将网址加载到位图

public void shareItem(String url) {
    Picasso.with(getApplicationContext()).load(url).into(new Target() {
        @Override public void onBitmapLoaded(Bitmap bitmap, Picasso.LoadedFrom from) {
            Intent i = new Intent(Intent.ACTION_SEND);
            i.setType("image/*");
            i.putExtra(Intent.EXTRA_STREAM, getLocalBitmapUri(bitmap));
            startActivity(Intent.createChooser(i, "Share Image"));
        }
        @Override public void onBitmapFailed(Drawable errorDrawable) { }
        @Override public void onPrepareLoad(Drawable placeHolderDrawable) { }
    });
}

将位图转换为Uri

public Uri getLocalBitmapUri(Bitmap bmp) {
    Uri bmpUri = null;
    try {
        File file =  new File(getExternalFilesDir(Environment.DIRECTORY_PICTURES), "share_image_" + System.currentTimeMillis() + ".png");
        FileOutputStream out = new FileOutputStream(file);
        bmp.compress(Bitmap.CompressFormat.PNG, 90, out);
        out.close();
        bmpUri = Uri.fromFile(file);
    } catch (IOException e) {
        e.printStackTrace();
    }
    return bmpUri;
}

Answer 2

我使用this tutorial

中的这些代码

        final ImageView imgview= (ImageView)findViewById(R.id.feedImage1);

                Uri bmpUri = getLocalBitmapUri(imgview);
                if (bmpUri != null) {
                    // Construct a ShareIntent with link to image
                    Intent shareIntent = new Intent();
                    shareIntent.setAction(Intent.ACTION_SEND);
                    shareIntent.putExtra(Intent.EXTRA_STREAM, bmpUri);
                    shareIntent.setType("image/*");
                    // Launch sharing dialog for image
                    startActivity(Intent.createChooser(shareIntent, "Share Image"));    
                } else {
                    // ...sharing failed, handle error
                }

然后将此添加到您的活动

 public Uri getLocalBitmapUri(ImageView imageView) {
    // Extract Bitmap from ImageView drawable
    Drawable drawable = imageView.getDrawable();
    Bitmap bmp = null;
    if (drawable instanceof BitmapDrawable){
       bmp = ((BitmapDrawable) imageView.getDrawable()).getBitmap();
    } else {
       return null;
    }
    // Store image to default external storage directory
    Uri bmpUri = null;
    try {
        File file =  new File(Environment.getExternalStoragePublicDirectory(  
            Environment.DIRECTORY_DOWNLOADS), "share_image_" + System.currentTimeMillis() + ".png");
        file.getParentFile().mkdirs();
        FileOutputStream out = new FileOutputStream(file);
        bmp.compress(Bitmap.CompressFormat.PNG, 90, out);
        out.close();
        bmpUri = Uri.fromFile(file);
    } catch (IOException e) {
        e.printStackTrace();
    }
    return bmpUri;
}

然后添加您的应用程序清单

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />

Answer 3

您需要使用本地文件。像这样：

      Uri imageUri = Uri.parse("android.resource://your.package/drawable/fileName");
      Intent intent = new Intent(Intent.ACTION_SEND);
      intent.setType("image/png");

      intent.putExtra(Intent.EXTRA_STREAM, imageUri);
      startActivity(Intent.createChooser(intent , "Share"));

如果您的图像在远程服务器上，请先将其下载到设备。

Answer 4

经过大量的思考，这是我发现为我工作的代码！我认为这是使用Picasso实现给定任务的最简单的代码版本之一。无需创建ImageView对象。

            Target target = new Target() {
            @Override
            public void onBitmapLoaded(Bitmap bitmap, Picasso.LoadedFrom from) {
                bmp = bitmap;
                String path = MediaStore.Images.Media.insertImage(getContentResolver(), bmp, "SomeText", null);
                Log.d("Path", path);
                Intent intent = new Intent(Intent.ACTION_SEND);
                intent.putExtra(Intent.EXTRA_TEXT, "Hey view/download this image");
                Uri screenshotUri = Uri.parse(path);
                intent.putExtra(Intent.EXTRA_STREAM, screenshotUri);
                intent.setType("image/*");
                startActivity(Intent.createChooser(intent, "Share image via..."));
            }

            @Override
            public void onBitmapFailed(Drawable errorDrawable) {

            }

            @Override
            public void onPrepareLoad(Drawable placeHolderDrawable) {

            }
        };
        String url = "http://efdreams.com/data_images/dreams/face/face-03.jpg";
        Picasso.with(getApplicationContext()).load(url).into(target);

这里，bmp是一个类级别的Bitmap变量，url将是您的图像的动态Internet URL以进行共享。此外，它不是保持代码在onBitmapLoaded（）函数内共享，它也可以保存在另一个处理函数中，然后从onBitmapLoaded（）函数调用。希望这有帮助！

Answer 5

试试这个：

new OmegaIntentBuilder(context)
                .share()
                .filesUrls("http://stacktoheap.com/images/stackoverflow.png")
                .download(new DownloadCallback() {
                    @Override
                    public void onDownloaded(boolean success, @NotNull ContextIntentHandler contextIntentHandler) {
                        contextIntentHandler.startActivity();
                    }
                });

https://github.com/Omega-R/OmegaIntentBuilder

Answer 6

   share.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {

            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
                int permissionCheck = ContextCompat.checkSelfPermission(SingleProduct.this,
                        Manifest.permission.READ_EXTERNAL_STORAGE);

                if (permissionCheck == PackageManager.PERMISSION_GRANTED) {
                    Log.e("MainActivity ", "P granted");

                    bmpUri = getLocalBitmapUri(imageView);

                } else {
                    ActivityCompat.requestPermissions(SingleProduct.this,
                            new String[]{Manifest.permission.READ_EXTERNAL_STORAGE, Manifest.permission.WRITE_EXTERNAL_STORAGE}, 1);
                }
            } else {
                Log.e("MainActivity", "Lower Than MarshMallow");
                bmpUri = getLocalBitmapUri(imageView);
            }

            if (bmpUri != null) {
                // Construct a ShareIntent with link to image
                Intent shareIntent = new Intent();
                shareIntent.setAction(Intent.ACTION_SEND);
                shareIntent.putExtra(Intent.EXTRA_STREAM, bmpUri);
                shareIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
                shareIntent.setType("image/*");
                startActivity(Intent.createChooser(shareIntent, "Share Image"));
            } else {
                Toast.makeText(SingleProduct.this, "Sharing Failed !!", Toast.LENGTH_SHORT).show();
            }
        }
    });

 public Uri getLocalBitmapUri(ImageView imageView) {
    Drawable drawable = imageView.getDrawable();
    Bitmap bmp = null;
    if (drawable instanceof BitmapDrawable) {
        bmp = ((BitmapDrawable) imageView.getDrawable()).getBitmap();
    } else {
        return null;
    }
    Uri bmpUri = null;
    try {
        File file = new File(getExternalFilesDir(Environment.DIRECTORY_PICTURES), "share_image_" + System.currentTimeMillis() + ".png");
        FileOutputStream out = new FileOutputStream(file);
        bmp.compress(Bitmap.CompressFormat.PNG, 90, out);
        out.close();

       bmpUri = Uri.fromFile(file);


    } catch (IOException e) {
        e.printStackTrace();
    }
    return bmpUri;
}

//for oreo add below code in manifest under application tag

 <provider
        android:name=".utility.GenericFileProvider"
        android:authorities="${applicationId}.your package 
     name.utility.GenericFileProvider"
        android:exported="false"
        android:grantUriPermissions="true">
        <meta-data
            android:name="android.support.FILE_PROVIDER_PATHS"
            android:resource="@xml/provider_paths" />
    </provider>

create class that extends FileProvider

public class MyFileProvider extends FileProvider {

}

for oreo add this code

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            bmpUri = FileProvider.getUriForFile(this, 
      this.getApplicationContext().getPackageName() + 
    ".your package name.GenericFileProvider", file);
        } else {
            bmpUri = Uri.fromFile(file);
        }

finally add provider_paths.xml in res/xml 

   <paths xmlns:android="http://schemas.android.com/apk/res/android">
   <external-path name="external_files" path="."/>
   </paths>

就这样

Answer 7

首先，您需要以滑行方式加载图像。然后，您可以将其共享到任何地方。用于从滑行加载图像的代码（图像已保存到存储中，您可以稍后将其删除）。

Glide.with(getApplicationContext())
 .load(imagelink)\\ link of your image file(url)
 .asBitmap().skipMemoryCache(true).diskCacheStrategy(DiskCacheStrategy.NONE)

 .into(new SimpleTarget < Bitmap > (250, 250) {
  @Override
  public void onResourceReady(Bitmap resource, GlideAnimation glideAnimation) {


   Intent intent = new Intent(Intent.ACTION_SEND);
   intent.putExtra(Intent.EXTRA_TEXT, "Hey view/download this image");
   String path = MediaStore.Images.Media.insertImage(getContentResolver(), resource, "", null);
   Log.i("quoteswahttodo", "is onresoursereddy" + path);

   Uri screenshotUri = Uri.parse(path);

   Log.i("quoteswahttodo", "is onresoursereddy" + screenshotUri);

   intent.putExtra(Intent.EXTRA_STREAM, screenshotUri);
   intent.setType("image/*");

   startActivity(Intent.createChooser(intent, "Share image via..."));
  }

  @Override
  public void onLoadFailed(Exception e, Drawable errorDrawable) {
   Toast.makeText(getApplicationContext(), "Something went wrong", Toast.LENGTH_SHORT).show();


   super.onLoadFailed(e, errorDrawable);
  }

  @Override
  public void onLoadStarted(Drawable placeholder) {
   Toast.makeText(getApplicationContext(), "Starting", Toast.LENGTH_SHORT).show();

   super.onLoadStarted(placeholder);
  }
 });

Answer 8

在这里，我使用asyncTask将网址转换为imageView并将其存储到位图中。不要忘记在清单中添加Internet权限。

public class MainActivity extends AppCompatActivity  {

    @SuppressLint("WrongThread")
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Button iv1 = findViewById(R.id.shreimage);
        final ImageView imgview= (ImageView)findViewById(R.id.content_image);
        new DownloadImageTask(imgview).execute("https://sample-videos.com/img/Sample-jpg-image-50kb.jpg");
        iv1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Drawable myDrawable = imgview.getDrawable();
                Bitmap bitmap = ((BitmapDrawable)myDrawable).getBitmap();
                try{
                    File file = new File(MainActivity.this.getExternalCacheDir(),"myImage.jpeg");
                    FileOutputStream fout = new FileOutputStream(file);
                    bitmap.compress(Bitmap.CompressFormat.JPEG,80,fout);
                    fout.flush();
                    fout.close();
                    file.setReadable(true,false);
                    Intent intent = new Intent(Intent.ACTION_SEND);
                    intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                    intent.putExtra(Intent.EXTRA_STREAM,Uri.fromFile(file));
                    intent.setType("image/*");
                    startActivity(Intent.createChooser(intent,"Share Image Via"));
                }catch (FileNotFoundException e){
                    e.printStackTrace();
                    Toast.makeText(MainActivity.this,"File Nott Found",Toast.LENGTH_SHORT).show();
                }catch (IOException e){
                    e.printStackTrace();
                }catch (Exception e){
                    e.printStackTrace();
                }
            }
        });

     }


    private class DownloadImageTask extends AsyncTask<String, Void, Bitmap> {
        ImageView bmImage;

        public DownloadImageTask(ImageView bmImage) {
            this.bmImage = bmImage;
        }

        protected Bitmap doInBackground(String... urls) {
            String urldisplay = urls[0];
            Bitmap mIcon11 = null;
            try {
                InputStream in = new java.net.URL(urldisplay).openStream();
                mIcon11 = BitmapFactory.decodeStream(in);
            } catch (Exception e) {
                Log.e("Error", e.getMessage());
                e.printStackTrace();
            }
            return mIcon11;
        }

        protected void onPostExecute(Bitmap result) {
            bmImage.setImageBitmap(result);
        }
    }
}

Answer 9

Picasso.with(applicationContext).load(url).into(object : Target {
            override fun onBitmapLoaded(bitmap: Bitmap, from: Picasso.LoadedFrom?) {
                val bitmapPath: String =
                    MediaStore.Images.Media.insertImage(contentResolver, bitmap, "ayurved", null)
                val bitmapUri = Uri.parse(bitmapPath)
                val shareIntent = Intent(Intent.ACTION_SEND)
                shareIntent.type = "image/jpeg";
                shareIntent.putExtra(Intent.EXTRA_STREAM, bitmapUri);
                startActivity(Intent.createChooser(shareIntent, "ayurved"))
            }
            override fun onBitmapFailed(errorDrawable: Drawable?) {}
            override fun onPrepareLoad(placeHolderDrawable: Drawable?) {}
        })

Answer 10

通过使用createchooser，您可以实现这一目标，

Intent sharingIntent = new Intent(Intent.ACTION_SEND);
Uri screenshotUri = Uri.parse(path);

sharingIntent.setType("image/png");
sharingIntent.putExtra(Intent.EXTRA_STREAM, screenshotUri);
startActivity(Intent.createChooser(sharingIntent, "Share image using"));

注册意图

如果您希望在调用此Intent时列出您的应用，则必须在manifest.xml文件中添加intent过滤器

 <intent-filter>
 <action android:name="android.intent.action.SEND" />
 <category android:name="android.intent.category.DEFAULT" />
 <data android:mimeType="image/*" />
 </intent-filter>

来自url的android共享图片

10 个答案: