CODEWITHSUNDEEP
androidif-statement
Michiel T
Michiel T

Reputation: 537

If/Else statement troubles (android)

I've been having some troubles to get an IF/ELSE statement working.

I have the following code:

    File fileOnSD=Environment.getExternalStorageDirectory();    
    String storagePath = fileOnSD.getAbsolutePath();
    Bitmap BckGrnd = BitmapFactory.decodeFile(storagePath + "/oranjelanbg.png");
    ImageView BackGround = (ImageView)findViewById(R.id.imageView1);        
    BackGround.setImageBitmap(BckGrnd);
    if (){

    }else{
    TextView text1 = (TextView) findViewById(R.id.textView1);
    TextView text2 = (TextView) findViewById(R.id.textView2);
    text1.setVisibility(View.VISIBLE);
    text2.setVisibility(View.VISIBLE);
    }

And I'm trying to achieve to following. My app downloads an image to the phone and uses this as a background. But the picture is not downloaded yet when u run the app for the first time, so there must be some text instead. The text is invisible by default and I want to make it visible when the image is still downloading and not placed yet.

What expression should I use in the IF statement to check if the image is loaded?

Upvotes: 0

Views: 389

Answers (1)

user370305
user370305

Reputation: 109237

    if (BckGrnd != null){
          BackGround.setImageBitmap(BckGrnd);
    }else{
    TextView text1 = (TextView) findViewById(R.id.textView1);
    TextView text2 = (TextView) findViewById(R.id.textView2);
    text1.setVisibility(View.VISIBLE);
    text2.setVisibility(View.VISIBLE);
    }

Better Solution:

Use AyncTask for Downloading Image:

AsyncTask<Void, Void, Void> loadingTask = new AsyncTask<Void, Void, Void>() {
        @Override
        protected void onPreExecute() {                                     
        TextView text1 = (TextView) findViewById(R.id.textView1);
        TextView text2 = (TextView) findViewById(R.id.textView2);
        text1.setVisibility(View.VISIBLE);
        text2.setVisibility(View.VISIBLE);
        }

        @Override
        protected Void doInBackground(Void... params) {                 
           // Download Image Here
        }
        @Override
        protected void onPostExecute(Void result) {  
           BackGround.setImageBitmap(BckGrnd);
           text1.setVisibility(View.GONE);
           text2.setVisibility(View.GONE);
        }

    };          
    loadingTask.execute();

Upvotes: 3

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