Stop text from multiple lines in periods in web addresses

Question

I have an Android TextView displaying some text and it is multi-line. However, in the text I sometimes have domain names; How can I stop a TextView from dividing lines into periods in them?

Is there a un-break-unicode period, for example?

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To see the problem in action when packing an email address, run android create project --target 16 --path demo --package com.example.demo --activity MainActivity
and change the text in res/layout/main.xml to " Hello World, MyActivity filler text + email [e-mail] ". This produces this output on the Galaxy S3 (API level 16):

(Correct the text, if necessary, look at the wrapper on devices with different screen sizes. It is noteworthy that the wrapper performs correctly in the preview of the Intellij layout, but only on the device that it is faulty.)

Answer 1

TL; DR;

@Matt McMinn has already demonstrated a solution to this problem here , understand it. I will only repeat this decision here.

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Please note that this problem has already been fixed at the platform level in Android 4.2.2. See the screenshots below for a comparison of words for the same code base, but different versions of the platform on the Galaxy Nexus.

Therefore, if you are not targeting older versions of Android, you may not use this fix at all.

The code

MainActivity.java

 package com.example.nobr; import android.app.Activity; import android.os.Bundle; import android.widget.TextView; import android.widget.TextView.BufferType; public class MainActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); TextView helloWorld = (TextView) findViewById(R.id.hello_world); helloWorld.setText(R.string.hello_world, BufferType.EDITABLE); TextView longText = (TextView) findViewById(R.id.long_text); longText.setText(R.string.long_text_with_url, BufferType.EDITABLE); } } 

activity_main.xml

 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:padding="16dp" > <com.example.nobr.NonBreakingPeriodTextView android:id="@+id/hello_world" android:layout_width="wrap_content" android:layout_height="wrap_content" /> <com.example.nobr.NonBreakingPeriodTextView android:id="@+id/long_text" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignLeft="@+id/hello_world" android:layout_below="@+id/hello_world" android:layout_marginTop="20dp" /> </RelativeLayout> 

NonBreakingPeriodTextView.java

 package com.example.nobr; import android.content.Context; import android.graphics.Paint; import android.text.Editable; import android.util.AttributeSet; import android.util.Log; import android.widget.TextView; public class NonBreakingPeriodTextView extends TextView { private static final String TAG = "NonBreakingPeriodTextView"; public NonBreakingPeriodTextView(Context context) { super(context); } public NonBreakingPeriodTextView(Context context, AttributeSet attrs) { super(context, attrs); } @Override protected void onSizeChanged(int w, int h, int oldw, int oldh) { Editable editable = getEditableText(); if (editable == null) { Log.d(TAG, "non-editable text"); return; } int width = getWidth() - getPaddingLeft() - getPaddingRight(); if (width == 0) { Log.d(TAG, "zero-length text"); return; } Paint p = getPaint(); float[] widths = new float[editable.length()]; p.getTextWidths(editable.toString(), widths); float curWidth = 0.0f; int lastWSPos = -1; int strPos = 0; final char newLine = '\n'; final String newLineStr = "\n"; boolean reset = false; int insertCount = 0; /* * Traverse the string from the start position, adding each character width to the total * until: 1) A whitespace character is found. In this case, mark the whitespace position. If * the width goes over the max, this is where the newline will be inserted. 2) A newline * character is found. This resets the curWidth counter. curWidth > width. Replace the * whitespace with a newline and reset the counter. */ while (strPos < editable.length()) { curWidth += widths[strPos]; char curChar = editable.charAt(strPos); if (curChar == newLine) { reset = true; } else if (Character.isWhitespace(curChar)) { lastWSPos = strPos; } else if (curWidth > width && lastWSPos >= 0) { editable.replace(lastWSPos, lastWSPos + 1, newLineStr); insertCount++; strPos = lastWSPos; lastWSPos = -1; reset = true; } if (reset) { curWidth = 0.0f; reset = false; } strPos++; } if (insertCount != 0) { setText(editable); } } } 

Result

On Android 4.1.2 (Galaxy Nexus)

On Android 2.3.3 (AVD, Nexus One clone)

Hope this helps.

Answer 2

To say that android for analyzing domain links in TextView uses this code in the TextView code block:

 android:autoLink="web" 

This will show the domain names as links in the application and will not split the lines.

Answer 3

Use this:

android: singleLine = "true" in xml

Answer 4

@ozbek's solution didn't work for me, respectively @Matt McMinn, I had to change the line

 else if(Character.isWhitespace(curChar)) 

for

 } else if (curChar == '\u00A0') { 

but otherwise a great solution, thanks