从 ACTION_PICK 共享文件 uri

Question

我正在尝试制作一个应用程序，要求用户选择一个图像文件，然后通过 intent 将其发送到另一个应用程序（在这种情况下是 Whatsapp，但这应该适用于其他应用程序）

我这样做是为了请求文件：

 Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
    intent.setType("image/*");
    intent.addCategory(Intent.CATEGORY_OPENABLE);

    try {
        startActivityForResult(
                Intent.createChooser(intent, "Select a File to Upload"),
                FILE_SELECT_CODE);
    } catch (android.content.ActivityNotFoundException ex) {
        Toast.makeText(this, "Please install a File Manager.", Toast.LENGTH_SHORT).show();
    }

这个 returns 一个 "content://" URI，但是当通过 intent 发送它时：

 if (isPackageExisted(whatsAppPackage)) {
        Intent sendIntent = new Intent();
        sendIntent.setAction(Intent.ACTION_SEND);
        sendIntent.putExtra(Intent.EXTRA_TEXT, "Some text");
        sendIntent.putExtra(Intent.EXTRA_STREAM, imageUri);
        sendIntent.setType("image/*");
        sendIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
        sendIntent.setPackage(whatsAppPackage);
        startActivity(sendIntent);
    }else{
        goToGooglePlay(whatsAppPackage);
    }

Whatsapp 显示祝酒词说文件格式不受支持，我可以在 logcat

上看到堆栈跟踪

java.lang.ClassCastException: android.net.Uri$StringUri cannot be cast to java.util.ArrayList
                                         at android.os.Bundle.getParcelableArrayList(Bundle.java:838)
                                         at android.content.Intent.getParcelableArrayListExtra(Intent.java:5405)
                                         at com.whatsapp.ContactPicker.c(ContactPicker.java:12)
                                         at com.whatsapp.ContactPicker.onCreate(ContactPicker.java:526)
                                         at android.app.Activity.performCreate(Activity.java:6251)
                                         at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1107)
                                         at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2369)
                                         at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)
                                         at android.app.ActivityThread.-wrap11(ActivityThread.java)
                                         at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)
                                         at android.os.Handler.dispatchMessage(Handler.java:102)
                                         at android.os.Looper.loop(Looper.java:148)
                                         at android.app.ActivityThread.main(ActivityThread.java:5417)
                                         at java.lang.reflect.Method.invoke(Native Method)
                                         at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
                                         at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)

...

我不确定我是否可以与其他应用共享 "picker app" uri，是否与权限有关？

这样做的正确方法是什么？我是否需要复制文件以便我的应用程序能够共享它？

编辑：

这适用于 Gmail 等其他应用程序，但不适用于 whatsapp，因此是否有适用于所有或大多数应用程序的解决方案？我不在乎我是否必须制作单独的共享方法，但 whatsapp 是必须的。

Answer 1

代码在真实设备上运行良好，在 android 模拟器上却无法运行。

没想到，为了以防万一phone我试过了。

Answer 2

此代码片段在模拟器和真实设备中都能正常工作

    private val FILE_SELECT_CODE = 101
    private val whatsAppPackage = "com.whatsapp"

       fun sharePicture() {
         val intent = Intent(Intent.ACTION_GET_CONTENT)
         intent.type = "image/*"
         intent.addCategory(Intent.CATEGORY_OPENABLE)
         if (intent.resolveActivity(packageManager) != null){
         startActivityForResult(
                Intent.createChooser(intent, "Select a File to Upload"),
                FILE_SELECT_CODE)
         }else{
             Toast.makeText(this, "Please install a File Manager.", 
             Toast.LENGTH_SHORT).show()
         }
      }


      override fun onActivityResult(requestCode: Int, resultCode: Int,                                       
      data: Intent?) {
         super.onActivityResult(requestCode, resultCode, data)

         if (resultCode == Activity.RESULT_OK) {
             when (requestCode) {
                 FILE_SELECT_CODE -> {
                        val sendIntent = Intent()
                        sendIntent.action = Intent.ACTION_SEND
                        sendIntent.putExtra(Intent.EXTRA_TEXT, "Some text")
                        sendIntent.putExtra(Intent.EXTRA_STREAM, data!!.data)
                        sendIntent.type = "image/*"
                        sendIntent.addFlags(
                                            Intent.FLAG_GRANT_READ_URI_PERMISSION)
                        sendIntent.`package` = whatsAppPackage
                     if (sendIntent.resolveActivity(packageManager) != null) {
                        startActivity(sendIntent)
                     } else {
                          goToGooglePlay(whatsAppPackage)
                     }
               }
            }
         } 
      }


       fun goToGooglePlay(appPackageName: String) {
         val playIntent = Intent(Intent.ACTION_VIEW, 
                          Uri.parse("market://details?id=$appPackageName"))

         if (playIntent.resolveActivity(packageManager) != null){
             startActivity(playIntent)
         }else
             startActivity(Intent(Intent.ACTION_VIEW, 
                        Uri.parse("https://play.google.com/store/apps/details? id=$appPackageName")))
        }


       fun isPackageExisted(packageName: String): Boolean {
           val pm = packageManager
           val isInstalled: Boolean
           isInstalled = try {
               pm.getPackageInfo(packageName, PackageManager.GET_ACTIVITIES)
               true
           } catch (e: PackageManager.NameNotFoundException) {
               false
           }

          return isInstalled
       }

Answer 3

正如您的代码日志所述，您无法将 uri 转换为字符串数组列表。

所以尝试 将 StringURI 转换为 ArrayListURI 像这样

ArrayList<Uri> tempURI = new ArrayList<>();
tempURI.add(imageUri); //Your String URI

现在有意通过 tempURI。

sendIntent.putExtra(Intent.EXTRA_STREAM, tempURI);

试试这个并检查它是否在模拟器上工作..

另请阅读此文

ACTION_SEND支持EXTRA_STREAM，但只支持单Uri。 ACTION_SEND_MULTIPLE 支持 EXTRA_STREAM 和 ArrayList<Uri>。

从 ACTION_PICK 共享文件 uri

Share file uri from ACTION_PICK

android

android-intent

whatsapp

android-sharing