Justify text in textview

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In my app first I have textview to show text. Then I want to justify text but in android its not possible to justify text in textview. To justify text I am taking help from

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死守一世寂寞

2020-12-08 13:09

Copy the following class to your project and extend your textview from this:

JustifiedTextView.java :

    import android.annotation.SuppressLint;
    import android.content.Context;
    import android.graphics.Color;
    import android.text.SpannableString;
    import android.webkit.WebChromeClient;
    import android.webkit.WebView;


    public class JustifiedTextView extends WebView {

       private String core = "<html><body style='text-align:justify;color:rgba(%s);font-size:%dpx;margin: 10px 10px 10px 10px;'>%s</body></html>";
    private String textColor = "0,0,0,255";
    private String text = "";
    private int textSize = 12;
    private int backgroundColor = Color.TRANSPARENT;

    public JustifiedTextView(Context context) {
        super(context);
        this.setWebChromeClient(new WebChromeClient() {

        });

    }

    public void setText(String s) {
        this.text = s;
        // this.setPadding(10, 10, 10, 10);
        reloadData();
    }

    @SuppressLint("NewApi")
    private void reloadData() {

        // loadData(...) has a bug showing utf-8 correctly. That's why we need
        // to set it first.
        this.getSettings().setDefaultTextEncodingName("utf-8");

        this.loadData(String.format(core, textColor, textSize, text),
            "text/html", "utf-8");

        // set WebView's background color *after* data was loaded.
        super.setBackgroundColor(backgroundColor);
        // Hardware rendering breaks background color to work as expected.
        // Need to use software renderer in that case.
        if (android.os.Build.VERSION.SDK_INT >= 11)
            this.setLayerType(WebView.LAYER_TYPE_SOFTWARE, null);
    }

    public void setTextColor(int hex) {
        String h = Integer.toHexString(hex);
        int a = Integer.parseInt(h.substring(0, 2), 16);
        int r = Integer.parseInt(h.substring(2, 4), 16);
        int g = Integer.parseInt(h.substring(4, 6), 16);
        int b = Integer.parseInt(h.substring(6, 8), 16);
        textColor = String.format("%d,%d,%d,%d", r, g, b, a);
        reloadData();
    }

    public void setBackgroundColor(int hex) {
        backgroundColor = hex;
        reloadData();
    }

    public void setTextSize(int textSize) {
        this.textSize = textSize;
        reloadData();
    }

}

You can use it like this:

    JustifiedTextView myMsg = new JustifiedTextView(this);
    myMsg.setText(msg);

If your text view is in xml, edit it like this:

    <com.whatever.JustifiedTextView  <!--path to the JustifiedTextView.java -->
      android:id="@+id=t1">
    </JustifiedTextView>

The do this in your code:

    JustifiedTextView myMsg = (JustifiedTextView)findViewById(R.id.t1);
    myMsg.setText("text");

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