17/05/2016 – Android Blog

Horizontal progressbar with custom color

sorsare 17/05/2016 0 Comments

activity_main.xml <progressbar android:id="@+id/progressBar" style="?android:progressBarStyleHorizontal" android:layout_width="match_parent" android:layout_height="1dp" android:layout_margin="0dp" android:max="100" android:padding="0dp" tools:progress="40" android:progressDrawable="@drawable/progress_drawable" app:layout_collapseMode="pin"/> MainActivity.java ProgressBar mProgressBar = (ProgressBar) findViewById(R.id.progressBar); //somewhere when scrollin mRecyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() { @Override public void onScrolled(RecyclerView recyclerView, int…

Android

Color theming – some words

sorsare 17/05/2016 0 Comments

(Found somewhere in gist) With the new theming in AppCompat, a lot of assets are tinted automatically for you via theme attributes. That has often led me to wonder "where…

Android

Example how to hide and show floating action button while scrolling the list (code not optimized well)

sorsare 17/05/2016 0 Comments

//this example is for recyclerView but it can be used somewhere else recyclerView.setOnScrollListener(new RecyclerView.OnScrollListener() { @Override public void onScrollStateChanged(RecyclerView recyclerView, int newState) { super.onScrollStateChanged(recyclerView, newState); } @Override public void onScrolled(RecyclerView…

Non-Android

ffmpeg – extract frames every second in ~50% quality jpeg

sorsare 17/05/2016 0 Comments

ffmpeg -i VID_20160407_190210.mp4 -vf fps=1 -qscale:v 16 out%d.jpg

Android

Example how to take photo and upload it’s thumbnail to your server using okhttp3 (first I convert it to jpeg)

sorsare 17/05/2016 0 Comments

//part when you click on item and start camera imageView.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); Context context = v.getContext(); if (takePictureIntent.resolveActivity(context.getPackageManager()) !=…

Android

Create text for empty listView

sorsare 17/05/2016 0 Comments

RelativeLayout lContainerLayout = new RelativeLayout(this); lContainerLayout.setLayoutParams(new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.FILL_PARENT, RelativeLayout.LayoutParams.FILL_PARENT)); TextView textView = new TextView(this); textView.setText("List is empty!"); RelativeLayout.LayoutParams lButtonParams = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT); lButtonParams.addRule(RelativeLayout.CENTER_IN_PARENT); textView.setLayoutParams(lButtonParams); lContainerLayout.addView(textView); addContentView(lContainerLayout, new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.FILL_PARENT, RelativeLayout.LayoutParams.FILL_PARENT)); listView.setEmptyView(lContainerLayout);

Android

Pretty way for serialization files

sorsare 17/05/2016 0 Comments

Found here: http://stackoverflow.com/a/4118917/619673 Saving (w/o exception handling code): FileOutputStream fos = context.openFileOutput(fileName, Context.MODE_PRIVATE); ObjectOutputStream os = new ObjectOutputStream(fos); os.writeObject(this); os.close(); fos.close(); Loading (w/o exception handling code): FileInputStream fis = context.openFileInput(fileName);…

Horizontal progressbar with custom color

Color theming – some words

Example how to hide and show floating action button while scrolling the list (code not optimized well)

ffmpeg – extract frames every second in ~50% quality jpeg

Example how to take photo and upload it’s thumbnail to your server using okhttp3 (first I convert it to jpeg)

Create text for empty listView

Pretty way for serialization files

You Missed

Read books

ebook-meta to bulk rename mobi and azw3 file names to $title – $author(s)

Android – how to obtain resource from Android’s internal resources

How to connect remote to emulator in another PC (macOS)