android - 如何将 Imageview 图像发布到服务器？

Question

我有一个图像视图，我在其中设置图像，然后单击该图像发送到服务器。我该怎么做？

Answer 1

添加库ٰVolley

compile 'com.android.volley:volley:1.0.0'

和 AndroidManifest.xml 中的权限网

<uses-permission android:name="android.permission.INTERNET"/>   
<uses-permission android:name="android.permission.READ_PROFILE"/>
<uses-permission android:name="android.permission.READ_CONTACTS"/>

拍摄imageview的照片并将其转换为字符串

  ImageView   ivImage1 = (ImageView ) findViewById(R.id.img_add1_send );

  String mmm=getStringImage( ( ( BitmapDrawable ) ivImage1.getDrawable( ) ).getBitmap( ) );

将照片功能转换为字符串

public String getStringImage(Bitmap bm){
    ByteArrayOutputStream ba=new ByteArrayOutputStream(  );
    bm.compress( Bitmap.CompressFormat.PNG,90,ba );
    byte[] by=ba.toByteArray();
    String encod= Base64.encodeToString( by,Base64.DEFAULT );
    return encod;
}

并将字符串转换为 JSON

JSONObject requestJsonObject = new JSONObject( );
requestJsonObject.put( "image", mmm );

我们使用以下函数将 JSON 发送到服务器

        JsonObjectRequest jjj = new JsonObjectRequest( Request.Method.POST,
            "http://192.168.16.1/dashbDoard/wDaryounes/GetDShopDDDBojId.php", requestJsonObject,
            new Response.Listener< JSONObject >( ) {
                @Override
                public void onResponse( JSONObject response ) {

                    if ( response == 1 ) {
                        
                
                        Toast.makeText( getApplication(), "yessss", Toast.LENGTH_SHORT ).show( );
                    } else {
                        
                            Toast.makeText( getApplication(), "no", Toast.LENGTH_SHORT ).show( );

                        }
                    },new Response.ErrorListener( ) {
                        @Override
                        public void onErrorResponse( VolleyError error ) {

                        }
                    } );
                    jjj.setRetryPolicy( new DefaultRetryPolicy( 18000, DefaultRetryPolicy.DEFAULT_MAX_RETRIES, DefaultRetryPolicy.DEFAULT_BACKOFF_MULT ) );
                    Volley.newRequestQueue( G.context ).add( jjj );


            }

在服务器上，很容易把这个字符串变成照片

代码 php

$image = $_POST['image'];

$decodedImage = base64_decode($image);

$location = "img/" . $title . "_" . rand(rand(5, 50), rand(500, 900)) .
            "_" . date("i") . "_" . date("d-m-Y") . ".jpg";

$resultOfCreatingImage = file_put_contents($location, $decodedImage);

if ($resultOfCreatingImage == false) {
    $error['error'] = "failure_creating_image";
} else {
    $q = "INSERT INTO ads( image) VALUES(?)";
    $res = $connect->prepare($q);
    $res->execute([$location]);
    if ($res->rowCount() > 0) {
        return 1;
    } else {
        return 0;
    }
}