Android textview text get cut off on the sides wit

问题:

This is what happens in the preview and on device:

TextView is nothing special, it just loads the custom font:

public class TestTextView extends AppCompatTextView {

    public TestTextView(Context context) {
        super(context);

        init(context);
    }

    public TestTextView(Context context, AttributeSet attrs) {
        super(context, attrs);

        init(context);
    }

    public TestTextView(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);

        init(context);
    }

    void init(Context context) {

        Typeface t = Typeface.createFromAsset(context.getAssets(), "fonts/daisy.ttf");

        setTypeface(t);
    }
}

Layout is also very basic, but just in case:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@color/material_red200"
    android:orientation="vertical">    

    <*custompackage* .TestTextView
        android:gravity="left"
        android:padding="0dp"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="just some text for testing"
        android:textColor="@color/material_black"
        android:textSize="100dp" />

</LinearLayout>

As you can see, the left parts, like 'j' and 'f' are cut off.

Setting the padding or margin did not work.

This font fits into it's frame when using from other programs.

Thanks in advance.

Edit: What @play_err_ mentioned is not a solution in my case.

• I am using in the final version a textview that resizes automatically, so adding spaces would be terribly difficult.
• I need an explanation why other programs (eg photoshop, after effects...) can calculate a proper bounding box and android cannot

• I am also loading different fonts dynamically and I do not want to create an

  if(badfont)
       addSpaces()
  

回答1:

This answer has led me to the right path: https://stackoverflow.com/a/28625166/4420543

So, the solution is to create a custom Textview and override the onDraw method:

    @Override
    protected void onDraw(Canvas canvas) {
        final Paint paint = getPaint();
        final int color = paint.getColor();
        // Draw what you have to in transparent
        // This has to be drawn, otherwise getting values from layout throws exceptions
        setTextColor(Color.TRANSPARENT);
        super.onDraw(canvas);
        // setTextColor invalidates the view and causes an endless cycle
        paint.setColor(color);

        System.out.println("Drawing text info:");

        Layout layout = getLayout();
        String text = getText().toString();

        for (int i = 0; i < layout.getLineCount(); i++) {
            final int start = layout.getLineStart(i);
            final int end = layout.getLineEnd(i);

            String line = text.substring(start, end);

            System.out.println("Line:\t" + line);

            final float left = layout.getLineLeft(i);
            final int baseLine = layout.getLineBaseline(i);

            canvas.drawText(line,
                    left + getTotalPaddingLeft(),
                    // The text will not be clipped anymore
                    // You can add a padding here too, faster than string string concatenation
                    baseLine + getTotalPaddingTop(),
                    getPaint());
        }
    }

回答2:

Android:gravity="center" and use Android:layout_paddingleft="value" hope it will work..

回答3:

What if you wrap it in another layout and add padding to that? For example something like this:

<RelativeLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:padding="24dp">
        <*custompackage* .TestTextView
        android:gravity="left"
        android:padding="0dp"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="just some text for testing"
        android:textColor="@color/material_black"
        android:textSize="100dp" />
</RelativeLayout>

Not having your font and other themes etc I've just tried it with the cursive font for example and on my machine it would look like this. screenshot

Update: Looks like you're not the only one to have had this issue and the other answers here and here both unfortunately relate to adding extra spaces.

I've created a bug ticket here since it looks like a bug to me.

回答4:

I encountered the same problem when I used some fonts in EditText.

My first attempt was to use padding. Size of view increased but text is still cropped.

Then I looked at the source code TextView. In method onDraw method Canvas.clipRect is called to perform this crop.

My solution to bypass cropping when use padding :

1) Сreate custom class inherited from Canvas and override method clipRect

public class NonClippableCanvas extends Canvas {

    public NonClippableCanvas(@NonNull Bitmap bitmap) {
        super(bitmap);
    }

    @Override
    public boolean clipRect(float left, float top, float right, float bottom) {
        return true;
    }
}

2) Create custom TextView and override methods onSizeChanged and onDraw.

In the method onSizeChanged create bitmap and canvas.

In the method onDraw draw on bitmap by passing our custom Canvas to method super.onDraw. Next, draw this bitmap on the target canvas.

public class CustomTextView extends TextView {
    private Bitmap _bitmap;
    private NonClippableCanvas _canvas;

    @Override
    protected void onSizeChanged(final int width, final int height,
                             final int oldwidth, final int oldheight) {
        if (width != oldwidth || height != oldheight) {
            _bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
            _canvas = new NonClippableCanvas(_bitmap);
        }

        super.onSizeChanged(width, height, oldwidth, oldheight);
    }

    @Override
    protected void onDraw(Canvas canvas) {
        _canvas.drawColor(Color.TRANSPARENT, PorterDuff.Mode.CLEAR);

        super.onDraw(_canvas);

        canvas.drawBitmap(_bitmap, 0, 0, null);
    }
}