共享图像

问题描述

当我单击共享按钮时，它会打开并显示一些应用程序，但是我单击一个应用程序，例如，它打开了WhatsApp，我选择了联系人，但是当单击发送按钮时，它显示“文件无法发送” 。如果我弄错了，请帮助我解决此代码。

在这里，我为共享按钮附加了代码。

//get an image from imageview
        Drawable drawable = imageView.getDrawable();
        Bitmap bitmap = ((BitmapDrawable) drawable).getBitmap();

        //sharing image
        try {
            File file = new File(MainActivity.this.getExternalCacheDir(),"myImage.png");
            FileOutputStream fOut = new FileOutputStream(file);
            bitmap.compress(Bitmap.CompressFormat.PNG,80,fOut);
            fOut.flush();
            fOut.close();
            file.setReadable(true,false);

            //sharing intent
            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/png");
            startActivity(Intent.createChooser(intent,"Share via"));
        } catch (FileNotFoundException e) {
            e.printStackTrace();
            Toast.makeText(MainActivity.this,"File not Found",Toast.LENGTH_SHORT).show();
        } catch (Exception e) {
            e.printStackTrace();
        }

解决方法

将有两种类型

一个：图片在您的可绘制对象中

Bitmap bitmap= BitmapFactory.decodeResource(getResources(),R.drawable.xxxx);
String path = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES)+"/LatestShare.jpg";
OutputStream out = null;
File file=new File(path);
try {
    out = new FileOutputStream(file);
    bitmap.compress(Bitmap.CompressFormat.JPEG,100,out);
    out.flush();
    out.close();
} catch (Exception e) {
    e.printStackTrace();
}
path=file.getPath();
Uri bmpUri = Uri.parse("file://"+path);
Intent shareIntent = new Intent();
shareIntent = new Intent(android.content.Intent.ACTION_SEND);
shareIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
shareIntent.putExtra(Intent.EXTRA_STREAM,bmpUri);
shareIntent.setType("image/jpg");
startActivity(Intent.createChooser(shareIntent,"Share with"));

第二张图片在您的手机上

Bitmap icon = mBitmap;
Intent share = new Intent(Intent.ACTION_SEND);
share.setType("image/jpeg");
ByteArrayOutputStream bytes = new ByteArrayOutputStream();
icon.compress(Bitmap.CompressFormat.JPEG,bytes);
File f = new File(Environment.getExternalStorageDirectory() + File.separator + "temporary_file.jpg");
try {
    f.createNewFile();
    FileOutputStream fo = new FileOutputStream(f);
    fo.write(bytes.toByteArray());
} catch (IOException e) {                       
        e.printStackTrace();
}
share.putExtra(Intent.EXTRA_STREAM,Uri.parse("file:///sdcard/temporary_file.jpg"));
startActivity(Intent.createChooser(share,"Share Image"))

,

尝试添加

intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);

,

here is my android manifest file,<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
package="com.example.photoeditor">


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

<uses-feature
    android:name="android-hardware.camera"
    android:required="false" />

<application
    android:allowBackup="true"
    android:icon="@mipmap/ic_launcher"
    android:label="@string/app_name"
    android:largeHeap="true"
    android:roundIcon="@mipmap/ic_launcher_round"
    android:supportsRtl="true"
    android:theme="@style/Theme.AppCompat.Light.NoActionBar">

    <activity
        android:name=".MainActivity"
        android:screenOrientation="portrait">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>

    <provider
        android:name="androidx.core.content.FileProvider"
        android:authorities="${applicationID}.provider"
        android:exported="false"
        android:grantUriPermissions="true"
        tools:replace="android:authorities">
        <meta-data
            android:name="android.support.FILE_PROVIDER_PATHS"
            android:resource="@xml/provider_path"
            tools:replace="android:resource"/>
    </provider>

</application>