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A custom TextView that can shrink its text size to fit in a single line
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| /** | |
| * Forked from: http://androidxref.com/4.1.1/xref/frameworks/base/core/java/com/android/internal/widget/DialogTitle.java | |
| * Created by LeoLink on 2014-06-30. | |
| */ | |
| import android.annotation.SuppressLint; | |
| import android.content.Context; | |
| import android.support.annotation.Nullable; | |
| import android.text.Layout; | |
| import android.text.TextUtils; | |
| import android.util.AttributeSet; | |
| import android.util.Log; | |
| import android.util.TypedValue; | |
| import android.widget.TextView; | |
| @SuppressLint("AppCompatCustomView") | |
| public class SingleLineTextView extends TextView { | |
| private static final String TAG = SingleLineTextView.class.getSimpleName(); | |
| private static final int MIN_TEXT_SIZE = 10; | |
| public SingleLineTextView(Context context) { | |
| super(context); | |
| setSingleLine(); | |
| setEllipsize(TextUtils.TruncateAt.END); | |
| } | |
| public SingleLineTextView(Context context, @Nullable AttributeSet attrs) { | |
| super(context, attrs); | |
| setSingleLine(); | |
| setEllipsize(TextUtils.TruncateAt.END); | |
| } | |
| public SingleLineTextView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) { | |
| super(context, attrs, defStyleAttr); | |
| setSingleLine(); | |
| setEllipsize(TextUtils.TruncateAt.END); | |
| } | |
| @Override | |
| protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { | |
| super.onMeasure(widthMeasureSpec, heightMeasureSpec); | |
| Layout layout = getLayout(); | |
| if (layout != null) { | |
| int lineCount = layout.getLineCount(); | |
| if (lineCount > 0) { | |
| boolean isEllipsis = true; | |
| while(isEllipsis) { | |
| int ellipsisCount = layout.getEllipsisCount(lineCount - 1); | |
| float textSize = getTextSize(); | |
| if (ellipsisCount > 0 && textSize > MIN_TEXT_SIZE) { | |
| Log.d(TAG, "Text is ellipsized"); | |
| // textSize is already expressed in pixels | |
| setTextSize(TypedValue.COMPLEX_UNIT_PX, (textSize - 1)); | |
| super.onMeasure(widthMeasureSpec, heightMeasureSpec); //setMeasuredDimension(getDefaultSize(getSuggestedMinimumWidth(), widthMeasureSpec),getDefaultSize(getSuggestedMinimumHeight(), heightMeasureSpec)); | |
| }else{ | |
| isEllipsis = false; | |
| } | |
| } | |
| } | |
| } | |
| } | |
| } |
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