snip by SamiMohsin

Welcome to Android snip Code from every Where

Tools:

Widgets
Activity
Tools
Connection
Intent
Others

Widgets

Fonts
General

alt text

<h1>Hello World</h1>
Here is an
<img src="octopus"><i>octopus</i>.<br>
And here is a
<a href="http://d.android.com">
link</a>.

<string name="from_html_text">
<![CDATA[
<h1>Hello World</h1>
Here is an
<img src="octopus"><i>octopus</i>.<br>
And here is a
<a href="http://d.android.com">
link</a>.
]]>
</string>

String html = getString(R.string.from_html_text);
textView.setMovementMethod(
    LinkMovementMethod.getInstance());
textView.setText(Html.fromHtml(
    html, new ResourceImageGetter(this), null));

private static class ResourceImageGetter
    implements Html.ImageGetter {
  // Constructor takes a Context
  public Drawable getDrawable(String source) {
    int path = context.getResources().getIdentifier(
        source, "drawable", context.getPackageName());
    Drawable drawable = ContextCompat.getDrawable(context, path);
    drawable.setBounds(0, 0,
       drawable.getIntrinsicWidth(),
       drawable.getIntrinsicHeight());
    return drawable;
  }
}

alt text

@TargetApi(LOLLIPOP)
<string name="fraction_text">
<![CDATA[
1<afrc>1/2</afrc> + <afrc>11/16</afrc>
= 2<afrc>3/16</afrc>
]]>
</string>

String html = getString(
  R.string.fraction_text);
textView.setText(Html.fromHtml(
    html, null,
    new FractionTagHandler()))

private static class FractionTagHandler implements Html.TagHandler {
  public void handleTag(boolean opening,
      String tag, Editable output, XMLReader xmlReader) {
  if (!"afrc".equalsIgnoreCase(tag)) return;
  int len = output.length();
  if (opening) {
    output.setSpan(new FractionSpan(), len, len,
        Spannable.SPAN_MARK_MARK);
  } else {
    Object obj = getLast(output, FractionSpan.class);
    int where = output.getSpanStart(obj);
    output.removeSpan(obj);
    if (where != len) {
      output.setSpan(new FractionSpan(), where, len, 0);
    }
  }
}

private Object getLast(Editable text, Class kind) {
  Object[] objs = text.getSpans(0, text.length(), kind);
  if (objs.length == 0) return null;
  for (int i = objs.length - 1; i >= 0; --i) {
    if(text.getSpanFlags(objs[i]) == Spannable.SPAN_MARK_MARK) {
      return objs[i];
    }
  }
  return null;
}

private static class FractionSpan extends MetricAffectingSpan {
  public void updateMeasureState(TextPaint textPaint) {
    textPaint.setFontFeatureSettings("afrc");
  }
  public void updateDrawState(TextPaint textPaint) {
    textPaint.setFontFeatureSettings("afrc");
  }
}

Styled string

static SpannableString formatString(
    Context context,
    int textId, int styleId) {
  String text = context.getString(textId);
  SpannableString spannableString
    = new SpannableString(text);
  spannableString.setSpan(
      new TextAppearanceSpan(
        context, styleId),
      0, text.length(), 0);
  return spannableString;
}

SpannableStringBuilder builder
    = new SpannableStringBuilder()
  .append(formatString(
      this, R.string.big_red,
      R.style.BigRedTextAppearance))
  .append("\n")
  .append(formatString(
      this, R.string.medium_green,
      R.style.MediumGreenTextAppearance))
  .append("\n")
  .append(formatString(
      this, R.string.small_blue,
      R.style.SmallBlueTextAppearance));

 textView.setText(
  builder.subSequence(
    0, builder.length()));

```

56sp #c00

</style>

















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##### AlignmentSpan



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public void click(View button) { String text = editText.getText().toString(); Layout.Alignment align = button.getId() == R.id.add_to_right_button ? Layout.Alignment.ALIGN_OPPOSITE : Layout.Alignment.ALIGN_NORMAL; appendText(text, align); editText.setText(null); }

---

private void appendText( CharSequence text, Layout.Alignment align) { AlignmentSpan span = new AlignmentSpan.Standard(align); SpannableString spannableString = new SpannableString(text); spannableString.setSpan( span, 0, text.length(), 0); if (textView.length() > 0) { textView.append(“\n\n”); } textView.append(spannableString); }
















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##### Animated rainbow span








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![alt text](https://raw.githubusercontent.com/SamiMohsin/snip/master/animated_rainbow.gif)











---

ObjectAnimator objectAnimator = ObjectAnimator.ofFloat( span, ANIMATED_COLOR_SPAN_FLOAT_PROPERTY, 0, 100); objectAnimator.setEvaluator( new FloatEvaluator()); objectAnimator.addUpdateListener( new ValueAnimator.AnimatorUpdateListener() { public void onAnimationUpdate( ValueAnimator animation) { textView.setText(spannableString); } }); objectAnimator.setInterpolator( new LinearInterpolator()); objectAnimator.setDuration( DateUtils.MINUTE_IN_MILLIS * 3); objectAnimator.setRepeatCount( ValueAnimator.INFINITE); objectAnimator.start();

---

private static final Property<AnimatedColorSpan, Float> ANIMATED_COLOR_SPAN_FLOAT_PROPERTY = new Property<AnimatedColorSpan, Float>( Float.class, “ANIMATED_COLOR_SPAN_FLOAT_PROPERTY”) { public void set( AnimatedColorSpan span, Float value) { span.setTranslateXPercentage(value); } public Float get(AnimatedColorSpan span) { return span.getTranslateXPercentage(); } };

---

public void setTranslateXPercentage( float value) { translateXPercentage = value; } public float getTranslateXPercentage() { return translateXPercentage; }

---

public void updateDrawState( TextPaint paint) { paint.setStyle(Paint.Style.FILL); float width = paint.getTextSize() * colors.length; if (this.shader == null) { this.shader = new LinearGradient( 0, 0, 0, width, colors, null, Shader.TileMode.MIRROR); } this.matrix.reset(); this.matrix.setRotate(90); this.matrix.postTranslate( width * translateXPercentage, 0); this.shader.setLocalMatrix(this.matrix); paint.setShader(this.shader); }















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##### ClickableSpan








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![alt text](https://raw.githubusercontent.com/SamiMohsin/snip/master/clickable_span.gif)







---

String text = textView.getText().toString();

String goToSettings = getString(R.string.go_to_settings); int start = text.indexOf(goToSettings); int end = start + goToSettings.length();

SpannableString spannableString = new SpannableString(text); spannableString.setSpan(new GoToSettingsSpan(), start, end, 0); textView.setText(spannableString);

textView.setMovementMethod(new LinkMovementMethod());

---

private static class GoToSettingsSpan extends ClickableSpan { public void onClick(View view) { view.getContext().startActivity( new Intent(android.provider.Settings.ACTION_SETTINGS)); } }

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  ##### Lined paper
  
  
  
  
  
  
  
  
  
  
  
  
  
  
---
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  ![alt text](https://raw.githubusercontent.com/SamiMohsin/snip/master/lined_paper.gif)
  
  
  
  
  
  
  
  
  
  
---

public class LinedEditText extends EditText { private void init() { this.paint = new Paint(); paint.setStyle(Paint.Style.STROKE); paint.setColor( getResources().getColor( R.color.paper_line)); paint.setStrokeWidth( getLineHeight() / 10); paint.setStrokeCap(Paint.Cap.ROUND); } }

---

protected void onDraw(Canvas canvas) { float startX = getPaddingLeft(); float stopX = getWidth() - getPaddingRight(); float offsetY = getPaddingTop() - getPaint().getFontMetrics().top + paint.getStrokeWidth() / 2; for (int i = 0; i < getLineCount(); ++i) { float y = offsetY + getLineHeight() * i; canvas.drawLine( startX, y, stopX, y, paint); }

super.onDraw(canvas); }


























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###### Emoji && Unicode with system font







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![alt text](https://raw.githubusercontent.com/SamiMohsin/snip/master/emoji_raw.png)


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![alt text](https://raw.githubusercontent.com/SamiMohsin/snip/master/emoji.png)













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![alt text](https://raw.githubusercontent.com/SamiMohsin/snip/master/emoji_raw_galaxy_nexus.png)












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![alt text](https://raw.githubusercontent.com/SamiMohsin/snip/master/emoji_raw (1).png)

















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String text = textView.getText().toString(); SpannableString spannableString = new SpannableString(text); IconFontSpan iconFontSpan = new IconFontSpan( textView.getContext()); Pattern pattern = Pattern.compile(“\u26F7”); // skier Matcher matcher = pattern.matcher(text); while (matcher.find()) { spannableString.setSpan(iconFontSpan, matcher.start(), matcher.end(), 0); }

---

private static class IconFontSpan extends MetricAffectingSpan { private static Typeface typeface = null; public IconFontSpan(Context context) { if (typeface == null) { typeface = Typeface.createFromAsset( context.getAssets(), “icomoon.ttf”); } } public void updateMeasureState( TextPaint textPaint) { textPaint.setTypeface(typeface); } public void updateDrawState( TextPaint textPaint) { textPaint.setTypeface(typeface); } }

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Pattern pattern = Pattern.compile(“:octopus:”); Matcher matcher = pattern.matcher(text); Bitmap octopus = null; int size = (int) (-textView.getPaint().ascent()); while (matcher.find()) { if (octopus == null) { Bitmap bitmap = BitmapFactory.decodeResource( getResources(), R.drawable.octopus); octopus = Bitmap.createScaledBitmap( bitmap, size, size, true); bitmap.recycle(); } ImageSpan span = new ImageSpan( this, octopus, ImageSpan.ALIGN_BASELINE); spannableString.setSpan( span, matcher.start(), matcher.end(), 0); }

---

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// :speed_50: :speed_110: Pattern pattern = Pattern.compile(“:speed_(\d\d\d?):”); Pattern matcher = pattern.matcher(text); while (matcher.find()) { SpeedSignDrawable drawable = new SpeedSignDrawable( textView, matcher.group(1)); ImageSpan span = new ImageSpan( drawable, ImageSpan.ALIGN_BASELINE); spannableString.setSpan( span, matcher.start(), matcher.end(), 0); }

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private static class SpeedSignDrawable extends Drawable { public SpeedSignDrawable( TextView textView, String number) { this.ascent = textView.getPaint().ascent(); this.descent = textView.getPaint().descent(); this.textSize = textView.getTextSize(); this.strokeWidth = textView.getPaint().getStrokeWidth(); this.number = number; int size = (int) -ascent; this.setBounds(0, 0, size, size); }

---

public void draw(Canvas canvas) { drawYellowCircle(canvas); drawRedRing(canvas); drawBlackNumber(canvas); }

private void drawYellowCircle(Canvas canvas) { int size = (int) -ascent; Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG); paint.setStyle(Paint.Style.FILL); paint.setColor(Color.YELLOW); canvas.drawCircle( size/2, size/2, size/2, paint); }

---

private void drawRedRing(Canvas canvas) { Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG); paint.setStyle(Paint.Style.STROKE); paint.setColor(Color.RED); float ringWidth = size / 10; paint.setStrokeWidth(ringWidth); canvas.drawCircle( size/2, size/2, size/2 - ringWidth/2, paint); }

---

private void drawBlackNumber(Canvas canvas) { float ratio = 0.4f; Paint paint = new Paint( Paint.ANTI_ALIAS_FLAG); paint.setStyle(Paint.Style.FILL); paint.setColor(Color.BLACK); paint.setTextAlign(Paint.Align.CENTER); paint.setTextSize(textSize * ratio); paint.setStrokeWidth(strokeWidth); paint.setTypeface( Typeface.defaultFromStyle(Typeface.BOLD)); int x = size / 2; int y = (int) (size/2 - ((descent + ascent)/2) * ratio); canvas.drawText(number, x, y, paint); } ```

Reference from above code -> https://chiuki.github.io/advanced-android-textview