10370 views.If you want to justify your text in Android first need to below dependency in gradle
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compile 'com.uncopt:android.justified:1.0' |
after that need to add below two java files in your src
TextJustifyUtils.java
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package androindin.learnandroid; /** * Created by Raj on 6/16/2016. */ import android.graphics.Paint; import android.view.Gravity; import android.widget.TextView; public class TextJustifyUtils { // Please use run(...) instead public static void justify(TextView textView) { Paint paint = new Paint(); String[] blocks; float spaceOffset = 0; float textWrapWidth = 0; int spacesToSpread; float wrappedEdgeSpace; String block; String[] lineAsWords; String wrappedLine; String smb = ""; Object[] wrappedObj; // Pull widget properties paint.setColor(textView.getCurrentTextColor()); paint.setTypeface(textView.getTypeface()); paint.setTextSize(textView.getTextSize()); textWrapWidth = textView.getWidth(); spaceOffset = paint.measureText(" "); blocks = textView.getText().toString().split("((?<=\n)|(?=\n))"); if (textWrapWidth < 20) { return; } for (int i = 0; i < blocks.length; i++) { block = blocks[i]; if (block.length() == 0) { continue; } else if (block.equals("\n")) { smb += block; continue; } block = block.trim(); if (block.length() == 0) continue; wrappedObj = TextJustifyUtils.createWrappedLine(block, paint, spaceOffset, textWrapWidth); wrappedLine = ((String) wrappedObj[0]); wrappedEdgeSpace = (Float) wrappedObj[1]; lineAsWords = wrappedLine.split(" "); spacesToSpread = (int) (wrappedEdgeSpace != Float.MIN_VALUE ? wrappedEdgeSpace / spaceOffset : 0); for (String word : lineAsWords) { smb += word + " "; if (--spacesToSpread > 0) { smb += " "; } } smb = smb.trim(); if (blocks[i].length() > 0) { blocks[i] = blocks[i].substring(wrappedLine.length()); if (blocks[i].length() > 0) { smb += "\n"; } i--; } } textView.setGravity(Gravity.LEFT); textView.setText(smb); } protected static Object[] createWrappedLine(String block, Paint paint, float spaceOffset, float maxWidth) { float cacheWidth = maxWidth; float origMaxWidth = maxWidth; String line = ""; for (String word : block.split("\\s")) { cacheWidth = paint.measureText(word); maxWidth -= cacheWidth; if (maxWidth <= 0) { return new Object[] { line, maxWidth + cacheWidth + spaceOffset }; } line += word + " "; maxWidth -= spaceOffset; } if (paint.measureText(block) <= origMaxWidth) { return new Object[] { block, Float.MIN_VALUE }; } return new Object[] { line, maxWidth }; } final static String SYSTEM_NEWLINE = "\n"; final static float COMPLEXITY = 5.12f; // Reducing this will increase // efficiency but will decrease // effectiveness final static Paint p = new Paint(); public static void run(final TextView tv, float origWidth) { String s = tv.getText().toString(); p.setTypeface(tv.getTypeface()); String[] splits = s.split(SYSTEM_NEWLINE); float width = origWidth - 5; for (int x = 0; x < splits.length; x++) if (p.measureText(splits[x]) > width) { splits[x] = wrap(splits[x], width, p); String[] microSplits = splits[x].split(SYSTEM_NEWLINE); for (int y = 0; y < microSplits.length - 1; y++) microSplits[y] = justify(removeLast(microSplits[y], " "), width, p); StringBuilder smb_internal = new StringBuilder(); for (int z = 0; z < microSplits.length; z++) smb_internal.append(microSplits[z] + ((z + 1 < microSplits.length) ? SYSTEM_NEWLINE : "")); splits[x] = smb_internal.toString(); } final StringBuilder smb = new StringBuilder(); for (String cleaned : splits) smb.append(cleaned + SYSTEM_NEWLINE); tv.setGravity(Gravity.LEFT); tv.setText(smb); } private static String wrap(String s, float width, Paint p) { String[] str = s.split("\\s"); // regex StringBuilder smb = new StringBuilder(); // save memory smb.append(SYSTEM_NEWLINE); for (int x = 0; x < str.length; x++) { float length = p.measureText(str[x]); String[] pieces = smb.toString().split(SYSTEM_NEWLINE); try { if (p.measureText(pieces[pieces.length - 1]) + length > width) smb.append(SYSTEM_NEWLINE); } catch (Exception e) { } smb.append(str[x] + " "); } return smb.toString().replaceFirst(SYSTEM_NEWLINE, ""); } private static String removeLast(String s, String g) { if (s.contains(g)) { int index = s.lastIndexOf(g); int indexEnd = index + g.length(); if (index == 0) return s.substring(1); else if (index == s.length() - 1) return s.substring(0, index); else return s.substring(0, index) + s.substring(indexEnd); } return s; } private static String justifyOperation(String s, float width, Paint p) { float holder = (float) (COMPLEXITY * Math.random()); while (s.contains(Float.toString(holder))) holder = (float) (COMPLEXITY * Math.random()); String holder_string = Float.toString(holder); float lessThan = width; int timeOut = 100; int current = 0; while (p.measureText(s) < lessThan && current < timeOut) { s = s.replaceFirst(" ([^" + holder_string + "])", " " + holder_string + "$1"); lessThan = p.measureText(holder_string) + lessThan - p.measureText(" "); current++; } String cleaned = s.replaceAll(holder_string, " "); return cleaned; } private static String justify(String s, float width, Paint p) { while (p.measureText(s) < width) { s = justifyOperation(s, width, p); } return s; } } |
TextViewEx.java
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package androindin.learnandroid; /** * Created by Raj on 6/16/2016. */ import android.annotation.SuppressLint; import android.content.Context; import android.graphics.Bitmap; import android.graphics.Bitmap.Config; import android.graphics.Paint.Align; import android.graphics.Canvas; import android.graphics.Paint; import android.widget.TextView; import android.util.AttributeSet; public class TextViewEx extends TextView { private Paint paint = new Paint(); private String[] blocks; private float spaceOffset = 0; private float horizontalOffset = 0; private float verticalOffset = 0; private float horizontalFontOffset = 0; private float dirtyRegionWidth = 0; private boolean wrapEnabled = false; int left, top, right, bottom = 0; private Align _align = Align.LEFT; private float strecthOffset; private float wrappedEdgeSpace; private String block; private String wrappedLine; private String[] lineAsWords; private Object[] wrappedObj; private Bitmap cache = null; private boolean cacheEnabled = false; public TextViewEx(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); // set a minimum of left and right padding so that the texts are not too // close to the side screen // this.setPadding(10, 0, 10, 0); } public TextViewEx(Context context, AttributeSet attrs) { super(context, attrs); // this.setPadding(10, 0, 10, 0); } public TextViewEx(Context context) { super(context); // this.setPadding(10, 0, 10, 0); } @Override public void setPadding(int left, int top, int right, int bottom) { // TODO Auto-generated method stub super.setPadding(left + 10, top, right + 10, bottom); } @Override public void setDrawingCacheEnabled(boolean cacheEnabled) { this.cacheEnabled = cacheEnabled; } public void setText(String st, boolean wrap) { wrapEnabled = wrap; super.setText(st); } public void setTextAlign(Align align) { _align = align; } @SuppressLint("NewApi") @Override protected void onDraw(Canvas canvas) { // If wrap is disabled then, // request original onDraw if (!wrapEnabled) { super.onDraw(canvas); return; } // Active canas needs to be set // based on cacheEnabled Canvas activeCanvas = null; // Set the active canvas based on // whether cache is enabled if (cacheEnabled) { if (cache != null) { // Draw to the OS provided canvas // if the cache is not empty canvas.drawBitmap(cache, 0, 0, paint); return; } else { // Create a bitmap and set the activeCanvas // to the one derived from the bitmap cache = Bitmap.createBitmap(getWidth(), getHeight(), Config.ARGB_4444); activeCanvas = new Canvas(cache); } } else { // Active canvas is the OS // provided canvas activeCanvas = canvas; } // Pull widget properties paint.setColor(getCurrentTextColor()); paint.setTypeface(getTypeface()); paint.setTextSize(getTextSize()); paint.setTextAlign(_align); paint.setFlags(Paint.ANTI_ALIAS_FLAG); // minus out the paddings pixel dirtyRegionWidth = getWidth() - getPaddingLeft() - getPaddingRight(); int maxLines = Integer.MAX_VALUE; int currentapiVersion = android.os.Build.VERSION.SDK_INT; if (currentapiVersion >= android.os.Build.VERSION_CODES.JELLY_BEAN) { maxLines = getMaxLines(); } int lines = 1; blocks = getText().toString().split("((?<=\n)|(?=\n))"); verticalOffset = horizontalFontOffset = getLineHeight() - 0.5f; // Temp // fix spaceOffset = paint.measureText(" "); for (int i = 0; i < blocks.length && lines <= maxLines; i++) { block = blocks[i]; horizontalOffset = 0; if (block.length() == 0) { continue; } else if (block.equals("\n")) { verticalOffset += horizontalFontOffset; continue; } block = block.trim(); if (block.length() == 0) { continue; } wrappedObj = TextJustifyUtils.createWrappedLine(block, paint, spaceOffset, dirtyRegionWidth); wrappedLine = ((String) wrappedObj[0]); wrappedEdgeSpace = (Float) wrappedObj[1]; lineAsWords = wrappedLine.split(" "); strecthOffset = wrappedEdgeSpace != Float.MIN_VALUE ? wrappedEdgeSpace / (lineAsWords.length - 1) : 0; for (int j = 0; j < lineAsWords.length; j++) { String word = lineAsWords[j]; if (lines == maxLines && j == lineAsWords.length - 1) { activeCanvas.drawText("...", horizontalOffset, verticalOffset, paint); } else if (j == 0) { // if it is the first word of the line, text will be drawn // starting from right edge of textview if (_align == Align.RIGHT) { activeCanvas.drawText(word, getWidth() - (getPaddingRight()), verticalOffset, paint); // add in the paddings to the horizontalOffset horizontalOffset += getWidth() - (getPaddingRight()); } else { activeCanvas.drawText(word, getPaddingLeft(), verticalOffset, paint); horizontalOffset += getPaddingLeft(); } } else { activeCanvas.drawText(word, horizontalOffset, verticalOffset, paint); } if (_align == Align.RIGHT) horizontalOffset -= paint.measureText(word) + spaceOffset + strecthOffset; else horizontalOffset += paint.measureText(word) + spaceOffset + strecthOffset; } lines++; if (blocks[i].length() > 0) { blocks[i] = blocks[i].substring(wrappedLine.length()); verticalOffset += blocks[i].length() > 0 ? horizontalFontOffset : 0; i--; } } if (cacheEnabled) { // Draw the cache onto the OS provided // canvas. canvas.drawBitmap(cache, 0, 0, paint); } } } |
After that need add textview in xml like below
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<androindin.learnandroid.TextViewEx android:layout_width="match_parent" android:layout_height="wrap_content" android:id="@+id/serv" android:textColor="@color/title" android:textSize="14sp" android:paddingTop="5dp" android:breakStrategy="balanced" android:visibility="gone" /> |
And in Java file add like below
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TextViewEx acttext; acttext=(TextViewEx)findViewById(R.id.activ); acttext.setText(getResources().getString(R.string.activity),true); |
