如何以编程方式将图片从图库分享到 WhatsApp? [英] How to share Image to WhatsApp from Gallery programmatically?

问题描述

我尝试使用以下代码将图像分享到 WhatsApp.目前，我手动添加了图片路径.

我想在用户单击我的应用程序中的按钮时打开图库，并且他必须能够选择要在 WhatsApp 中共享的图像.

我该怎么做?

PS:我需要动态设置图片路径

button.setOnClickListener(new View.OnClickListener() {@覆盖public void onClick(View v) {Toast.makeText(MainActivity.this, "Testing Button", Toast.LENGTH_SHORT).show();File f=new File("/sdcard/Download/myimage.jpg");Uri uri = Uri.parse("file://"+f.getAbsolutePath());意图份额 = 新意图(Intent.ACTION_SEND)；share.setPackage("com.whatsapp");share.putExtra(Intent.EXTRA_STREAM, uri);share.setType("图像/*");share.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);v.getContext().startActivity(Intent.createChooser(share, "Share image File"));}});

解决方案

您可以使用以下代码动态获取图像 Uri.它将适用于所有版本的 Android.

主活动

public class MainActivity extends Activity {@覆盖protected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);意图意图=新意图(Intent.ACTION_GET_CONTENT)；intent.setType("image/*");startActivityForResult(intent, 0);}@覆盖protected void onActivityResult(int reqCode, int resCode, Intent data) {if(resCode == Activity.RESULT_OK && 数据 != null){字符串真实路径；如果 (Build.VERSION.SDK_INT < 11)realPath = RealPathUtil.getRealPathFromURI_BelowAPI11(this, data.getData());否则如果(Build.VERSION.SDK_INT <19)realPath = RealPathUtil.getRealPathFromURI_API11to18(this, data.getData());别的realPath = RealPathUtil.getRealPathFromURI_API19(this, data.getData());getImageInfo(Build.VERSION.SDK_INT, data.getData().getPath(),realPath);}}private void getImageInfo(int sdk, String uriPath,String realPath){Uri uriFromPath = Uri.fromFile(new File(realPath));Log.d("Log", "Build.VERSION.SDK_INT:"+sdk);Log.d("Log", "URI 路径:"+uriPath);Log.d("Log", "真实路径:"+realPath);}}

RealPathUtil.java

import android.annotation.SuppressLint;导入 android.content.Context;导入 android.content.CursorLoader;导入 android.database.Cursor;导入android.net.Uri；导入 android.provider.DocumentsContract;导入 android.provider.MediaStore;公共类 RealPathUtil {@SuppressLint("NewApi")公共静态字符串 getRealPathFromURI_API19(上下文上下文，Uri uri){字符串文件路径 = "";String WholeID = DocumentsContract.getDocumentId(uri);//在冒号处拆分，使用数组中的第二项String id = WholeID.split(":")[1];String[] column = { MediaStore.Images.Media.DATA };//其中 id 等于String sel = MediaStore.Images.Media._ID + "=?";Cursor cursor = context.getContentResolver().query(MediaStore.Images.Media.EXTERNAL_CONTENT_URI,列, sel, 新字符串[]{ id }, null);int columnIndex = cursor.getColumnIndex(column[0]);如果 (cursor.moveToFirst()) {filePath = cursor.getString(columnIndex);}游标.关闭()；返回文件路径；}@SuppressLint("NewApi")public static String getRealPathFromURI_API11to18(Context context, Uri contentUri) {String[] proj = { MediaStore.Images.Media.DATA };字符串结果 = null;CursorLoader cursorLoader = new CursorLoader(语境，contentUri, proj, null, null, null);Cursor cursor = cursorLoader.loadInBackground();如果(光标！= null){int column_index =cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);cursor.moveToFirst();结果 = cursor.getString(column_index);}返回结果；}public static String getRealPathFromURI_BelowAPI11(Context context, Uri contentUri){String[] proj = { MediaStore.Images.Media.DATA };Cursor cursor = context.getContentResolver().query(contentUri, proj, null, null, null);整数列索引= cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);cursor.moveToFirst();返回 cursor.getString(column_index);}}

将此权限添加到 Manifest.xml

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

<块引用>

在 Android 6+ 中，您需要在运行时请求权限.

I tried the following code to share an image to WhatsApp. For now, I manually added the image path.

I want to open the gallery when the user clicks a button in my application and he must be able to select an image to share in WhatsApp.

How can I do that?

PS: I need to set the image path dynamically

button.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        Toast.makeText(MainActivity.this, "Testing Button", Toast.LENGTH_SHORT).show();

        File f=new File("/sdcard/Download/myimage.jpg");
        Uri uri = Uri.parse("file://"+f.getAbsolutePath());
        Intent share = new Intent(Intent.ACTION_SEND);
        share.setPackage("com.whatsapp");
        share.putExtra(Intent.EXTRA_STREAM, uri);
        share.setType("image/*");
        share.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
        v.getContext().startActivity(Intent.createChooser(share, "Share image File"));
    }
});

解决方案

You can use the below code to dynamically get the image Uri. It will work on all versions of Android.

MainActivity

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);


        Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
        intent.setType("image/*");
        startActivityForResult(intent, 0);
    }

    @Override
     protected void onActivityResult(int reqCode, int resCode, Intent data) {
        if(resCode == Activity.RESULT_OK && data != null){
            String realPath;

            if (Build.VERSION.SDK_INT < 11)
                realPath = RealPathUtil.getRealPathFromURI_BelowAPI11(this, data.getData());


            else if (Build.VERSION.SDK_INT < 19)
                realPath = RealPathUtil.getRealPathFromURI_API11to18(this, data.getData());


            else
                realPath = RealPathUtil.getRealPathFromURI_API19(this, data.getData());


            getImageInfo(Build.VERSION.SDK_INT, data.getData().getPath(),realPath);
        }
    }

    private void getImageInfo(int sdk, String uriPath,String realPath){

        Uri uriFromPath = Uri.fromFile(new File(realPath));
        Log.d("Log", "Build.VERSION.SDK_INT:"+sdk);
        Log.d("Log", "URI Path:"+uriPath);
        Log.d("Log", "Real Path: "+realPath);
    }
}

RealPathUtil.java

import android.annotation.SuppressLint;
import android.content.Context;
import android.content.CursorLoader;
import android.database.Cursor;
import android.net.Uri;
import android.provider.DocumentsContract;
import android.provider.MediaStore;

public class RealPathUtil {

    @SuppressLint("NewApi")
    public static String getRealPathFromURI_API19(Context context, Uri uri){
        String filePath = "";
        String wholeID = DocumentsContract.getDocumentId(uri);

         // Split at colon, use second item in the array
         String id = wholeID.split(":")[1];

         String[] column = { MediaStore.Images.Media.DATA };     

         // where id is equal to             
         String sel = MediaStore.Images.Media._ID + "=?";

         Cursor cursor = context.getContentResolver().query(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, 
                                   column, sel, new String[]{ id }, null);

         int columnIndex = cursor.getColumnIndex(column[0]);

         if (cursor.moveToFirst()) {
             filePath = cursor.getString(columnIndex);
         }   
         cursor.close();
         return filePath;
    }


    @SuppressLint("NewApi")
    public static String getRealPathFromURI_API11to18(Context context, Uri contentUri) {
          String[] proj = { MediaStore.Images.Media.DATA };
          String result = null;

          CursorLoader cursorLoader = new CursorLoader(
                  context, 
            contentUri, proj, null, null, null);        
          Cursor cursor = cursorLoader.loadInBackground();

          if(cursor != null){
           int column_index = 
             cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
           cursor.moveToFirst();
           result = cursor.getString(column_index);
          }
          return result;  
    }

    public static String getRealPathFromURI_BelowAPI11(Context context, Uri contentUri){
               String[] proj = { MediaStore.Images.Media.DATA };
               Cursor cursor = context.getContentResolver().query(contentUri, proj, null, null, null);
               int column_index
          = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
               cursor.moveToFirst();
               return cursor.getString(column_index);
    }
}

Add this Permission to Manifest.xml

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

In Android 6+, You need to request the Permission during RunTime.

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