Java Code Examples for android.widget.TextView#getPaint()

@Override
public void initView() {
    initToolbar();
    sharedPreferences = PreferenceManager.getDefaultSharedPreferences(mContext);
    mPage_content = (LinearLayout) findViewById(R.id.page_content);
    mLoadingPage = (LoadingPage) findViewById(R.id.loading_page);
    details_title = (TextView) this.findViewById(R.id.details_title);
    // 设置标题加粗
    TextPaint tp = details_title.getPaint();
    tp.setFakeBoldText(true);
    details_name = (TextView) this.findViewById(R.id.details_name);
    details_time = (TextView) this.findViewById(R.id.details_time);
    mWebView = (WebView) this.findViewById(details_content);

    showLoadingPage();
}
 

public PDFTextView(Context context) {
    super(context);
    setOrientation(VERTICAL);
    setMinimumHeight(screenHeight / 3);
    textView = new TextView(context);
    LayoutParams lp = new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);
    lp.gravity = Gravity.CENTER_HORIZONTAL;
    addView(textView, lp);
    setPadding(0, 40, 0, 40);
    setBackgroundColor(context.getResources().getColor(R.color.text_reflow_bg_color));

    mPaint = textView.getPaint();
    mTextSize = mPaint.getTextSize();
    mPaint.setTextSize(mTextSize * 1.2f);
    // html:行间距要调小,会导致图文重排图片上移,段间距偏大,行间距也偏大,
    // xhtml:默认不修改,文本行间距偏小,段间距偏大.
    // text:所有文本不换行,显示不对.剩下与xhtml相同.如果不使用Html.from设置,有换行,但显示不了图片.
    // textView.setLineSpacing(0, 0.8f);
    textView.setPadding(30, 0, 30, 0);
    textView.setTextColor(context.getResources().getColor(R.color.text_reflow_color));
    //textView.setTextIsSelectable(true);
    minImgHeight = textView.getPaint().measureText("我") + 5;
}
 

TextView getTextView() {
	//设置TextView的样式
	AbsListView.LayoutParams lp = new AbsListView.LayoutParams(
			ViewGroup.LayoutParams.WRAP_CONTENT, 64);
	TextView textView = new TextView(
			mContext);
	textView.setLayoutParams(lp);
	textView.setGravity(Gravity.CENTER_VERTICAL);
	//设置TextView的Padding值
	textView.setPadding(16, -10, 0, 32);
	//设置TextView的字体大小
	textView.setTextSize(14);
	//设置TextView的字体颜色
	textView.setTextColor(Color.WHITE);
	//设置字体加粗
	TextPaint txt = textView.getPaint();
	txt.setFakeBoldText(true);
	return textView;
}
 

/**
 * 设置箭头方向
 */
private void setArrowDirection(TextView tv_tab, boolean isUp) {
    TextPaint textPaint = tv_tab.getPaint();
    if (isUp) {
        if (tab_text_style == 1) {
            textPaint.setFakeBoldText(true);
        }

        tv_tab.setTextColor(btnTextSelect);
        tv_tab.setCompoundDrawablesWithIntrinsicBounds(0, 0, tab_arrow_select, 0);

    } else {
        textPaint.setFakeBoldText(false);
        tv_tab.setTextColor(btnTextUnSelect);
        tv_tab.setCompoundDrawablesWithIntrinsicBounds(0, 0, tab_arrow_unselect, 0);
    }
}
 

TextView getTextView() {
	//设置TextView的样式
	AbsListView.LayoutParams lp = new AbsListView.LayoutParams(
			ViewGroup.LayoutParams.WRAP_CONTENT, 64);
	TextView textView = new TextView(
			mContext);
	textView.setLayoutParams(lp);
	textView.setGravity(Gravity.CENTER_VERTICAL);
	//设置TextView的Padding值
	textView.setPadding(16, -10, 0, 32);
	//设置TextView的字体大小
	textView.setTextSize(14);
	//设置TextView的字体颜色
	textView.setTextColor(Color.WHITE);
	//设置字体加粗
	TextPaint txt = textView.getPaint();
	txt.setFakeBoldText(true);
	return textView;
}
 

public Card(Context context) {
    super(context);
    LayoutParams lp = null;

    background = new View(getContext());
    lp = new LayoutParams(-1, -1);
    lp.setMargins(10, 10, 0, 0);
    background.setBackgroundColor(getResources().getColor(
            R.color.normalCardBack));
    addView(background, lp);

    label = new TextView(getContext());
    label.setTextSize(28);
    label.setGravity(Gravity.CENTER);

    TextPaint tp = label.getPaint();
    tp.setFakeBoldText(true);

    lp = new LayoutParams(-1, -1);
    lp.setMargins(10, 10, 0, 0);
    addView(label, lp);

    setNum(0);
}
 

protected static int getWordWidth() {
	Context context = getGDActivity();

	String text = "W";
	TextView textView = new TextView(context);
	textView.setTextSize(ClickableMenuElement.TEXT_SIZE);
	textView.setTypeface(Global.robotoCondensedTypeface);

	Rect bounds = new Rect();

	Paint textPaint = textView.getPaint();
	textPaint.getTextBounds(text, 0, text.length(), bounds);

	return bounds.width() + getDp(WORD_SPACE);
}
 

/**
 * 判断TextView的内容宽度是否超出其可用宽度
 *
 * @param tv
 * @return
 */
public static boolean isOverFlowed(TextView tv, int maxWidth) {
    int availableWidth = maxWidth - tv.getPaddingLeft() - tv.getPaddingRight();
    Paint textViewPaint = tv.getPaint();
    float textWidth = textViewPaint.measureText(tv.getText().toString());
    if (textWidth > availableWidth) {
        return true;
    } else {
        return false;
    }
}
 

/**
 * 计算TextView 的宽度
 * @param textView
 * @param text
 * @return
 */
public static float getTextViewLength(TextView textView,String text){  
	TextPaint paint = textView.getPaint();  
	// 得到使用该paint写上text的时候,像素为多少  
	float textLength = paint.measureText(text);  
	return textLength;  
}
 

public static int measureTextView(TextView tv) {
    if (tv == null) {
        return -1;
    }
    Paint p = tv.getPaint();
    return (int) p.measureText(tv.getText().toString());
}
 

/**
 * Computes and records the minimum width required to display any of the values without
 * causing another layout pass when switching values.
 */
int computeMinWidthRequiredForValues() {
    DualControlLayout layout = getView(0, null, null);
    TextView container = (TextView) layout.getChildAt(1);

    Paint textPaint = container.getPaint();
    float longestLanguageWidth = 0;
    for (int i = 0; i < getCount(); i++) {
        float width = textPaint.measureText(getItem(i).toString());
        longestLanguageWidth = Math.max(longestLanguageWidth, width);
    }

    mMinWidthRequiredForValues = (int) Math.ceil(longestLanguageWidth);
    return mMinWidthRequiredForValues;
}
 

public static void handleNickName(ThreadRowInfo row, int fgColor,
                                  TextView nickNameTV, Context context) {
    initStaticStrings(context);
    String nickName = row.getAuthor();
    // int now = 0;
    if ("-1".equals(row.getYz()))// nuked
    {
        fgColor = nickNameTV.getResources().getColor(R.color.title_red);
        nickName += "(VIP)";
    } else if (!StringUtils.isEmpty(row.getMuteTime())
            && !"0".equals(row.getMuteTime()) || row.isMuted()) {
        fgColor = nickNameTV.getResources().getColor(R.color.title_orange);
        nickName += "(" + legend + ")";
    }
    if (row.get_isInBlackList()) {
        fgColor = nickNameTV.getResources().getColor(R.color.title_orange);
        nickName += "(" + blacklistban + ")";
    }
    if (row.getISANONYMOUS()) {
        fgColor = nickNameTV.getResources().getColor(R.color.title_red);
        nickName += "(匿名)";
    }
    nickNameTV.setText(nickName);
    TextPaint tp = nickNameTV.getPaint();
    tp.setFakeBoldText(true);// bold for Chinese character
    nickNameTV.setTextColor(fgColor);
}
 

private void adjustWidth (TextView view, RelativeLayout.LayoutParams params, String text)
{
    Paint tpaint;

    tpaint = view.getPaint ();
    params.width = (int) Math.max (params.width, tpaint.measureText (text));
}
 

@Nullable
private static PrecomputedTextCompat precomputedText(@Nullable TextView textView, @NonNull Spanned spanned) {

    if (textView == null) {
        return null;
    }

    final PrecomputedTextCompat.Params params;

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {
        // use native parameters on P
        params = new PrecomputedTextCompat.Params(textView.getTextMetricsParams());
    } else {

        final PrecomputedTextCompat.Params.Builder builder =
                new PrecomputedTextCompat.Params.Builder(textView.getPaint());

        // please note that text-direction initialization is omitted
        // by default it will be determined by the first locale-specific character

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            // another miss on API surface, this can easily be done by the compat class itself
            builder
                    .setBreakStrategy(textView.getBreakStrategy())
                    .setHyphenationFrequency(textView.getHyphenationFrequency());
        }

        params = builder.build();
    }

    return PrecomputedTextCompat.create(spanned, params);
}
 

/**
 * Get desired popup window width by calculating the maximum text length from Autofill data.
 * @param data Autofill suggestion data.
 * @return The popup window width in DIP.
 */
private float getDesiredWidth(ArrayList<AutofillSuggestion> data) {
    if (mLabelViewPaint == null || mSublabelViewPaint == null) {
        LayoutInflater inflater =
                (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        View layout = inflater.inflate(R.layout.autofill_text, null);
        TextView labelView = (TextView) layout.findViewById(R.id.autofill_label);
        mLabelViewPaint = labelView.getPaint();
        TextView sublabelView = (TextView) layout.findViewById(R.id.autofill_sublabel);
        mSublabelViewPaint = sublabelView.getPaint();
    }

    float maxTextWidth = 0;
    Rect bounds = new Rect();
    for (int i = 0; i < data.size(); ++i) {
        bounds.setEmpty();
        String label = data.get(i).mLabel;
        if (!TextUtils.isEmpty(label)) {
            mLabelViewPaint.getTextBounds(label, 0, label.length(), bounds);
        }
        float labelWidth = bounds.width();

        bounds.setEmpty();
        String sublabel = data.get(i).mSublabel;
        if (!TextUtils.isEmpty(sublabel)) {
            mSublabelViewPaint.getTextBounds(sublabel, 0, sublabel.length(), bounds);
        }

        float localMax = Math.max(labelWidth, bounds.width());
        maxTextWidth = Math.max(maxTextWidth, localMax);
    }
    // Scale it down to make it unscaled by screen density.
    maxTextWidth = maxTextWidth / mContext.getResources().getDisplayMetrics().density;
    // Adding padding.
    return maxTextWidth + TEXT_PADDING_DP;
}
 

private int getTextWidth(TextView textView) {
    if (textView == null) {
        return 0;
    }
    Rect bounds = new Rect();
    String text = textView.getText().toString();
    Paint paint = textView.getPaint();
    paint.getTextBounds(text, 0, text.length(), bounds);
    int width = bounds.left + bounds.width();
    return width;
}
 

private int getTextWidth(TextView textView) {
    Rect bounds = new Rect();
    Paint textPaint = textView.getPaint();
    textPaint.getTextBounds(textView.getText().toString(), 0, textView.getText().length(), bounds);
    return bounds.width();
}
 

public static void justify(final TextView textView) {

        // 标记是否已经进行过处理，因为 post 回调会在处理后继续触发
        final AtomicBoolean isJustify = new AtomicBoolean(false);

        // 处理前原始字符串
        final String textString = textView.getText().toString();

        // 用于测量文字宽度，计算分散对齐后的空格宽度
        final TextPaint textPaint = textView.getPaint();

        CharSequence textViewText = textView.getText();

        // 分散对齐后的文字
        final Spannable builder = textViewText instanceof Spannable ?
                (Spannable) textViewText :
                new SpannableString(textString);

        // 在 TextView 完成测量绘制之后执行
        textView.post(new Runnable() {
            @Override
            public void run() {

                // 判断是否已经处理过
                if (!isJustify.get()) {

                    // 获取原始布局总行数
                    final int lineCount = textView.getLineCount();
                    // 获取 textView 的宽度
                    final int textViewWidth = textView.getWidth();

                    for (int i = 0; i < lineCount; i++) {

                        // 获取行首字符位置和行尾字符位置来截取每行的文字
                        int lineStart = textView.getLayout().getLineStart(i);
                        int lineEnd = textView.getLayout().getLineEnd(i);

                        String lineString = textString.substring(lineStart, lineEnd);

                        // 最后一行不做处理
                        if (i == lineCount - 1) {
                            break;
                        }

                        // 行首行尾去掉空格以保证处理后的对齐效果
                        String trimSpaceText = lineString.trim();
                        String removeSpaceText = lineString.replaceAll(" ", "");

                        float removeSpaceWidth = textPaint.measureText(removeSpaceText);
                        float spaceCount = trimSpaceText.length() - removeSpaceText.length();

                        // 两端对齐时每个空格的重新计算的宽度
                        float eachSpaceWidth = (textViewWidth - removeSpaceWidth) / spaceCount;

                        // 两端空格需要单独处理
                        Set<Integer> endsSpace = spacePositionInEnds(lineString);
                        for (int j = 0; j < lineString.length(); j++) {
                            char c = lineString.charAt(j);

                            // 使用透明的 drawable 来填充空格部分
                            Drawable drawable = new ColorDrawable(0x00ffffff);

                            if (c == ' ') {
                                if (endsSpace.contains(j)) {
                                    // 如果是两端的空格，则宽度置为 0
                                    drawable.setBounds(0, 0, 0, 0);
                                } else {
                                    drawable.setBounds(0, 0, (int) eachSpaceWidth, 0);
                                }
                                ImageSpan span = new ImageSpan(drawable);
                                builder.setSpan(span, lineStart + j, lineStart + j + 1, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
                            }
                        }
                    }

                    textView.setText(builder);
                    // 标记处理完毕
                    isJustify.set(true);
                }
            }
        });
    }
 

/**
 * Create a TextDrawable. This uses the given TextView to initialize paint and has initial text
 * that will be drawn. Initial text can also be useful for reserving space that may otherwise
 * not be available when setting compound drawables.
 *
 * @param tv               The TextView / EditText using to initialize this drawable
 * @param initialText      Optional initial text to display
 * @param bindToViewsText  Should this drawable mirror the text in the TextView
 * @param bindToViewsPaint Should this drawable mirror changes to Paint in the TextView, like textColor, typeface, alpha etc.
 *                         Note, this will override any changes made using setColorFilter or setAlpha.
 */
public TextDrawable(TextView tv, String initialText, boolean bindToViewsText, boolean bindToViewsPaint) {
    this(tv.getPaint(), initialText);
    ref = new WeakReference<>(tv);
    if (bindToViewsText || bindToViewsPaint) {
        if (bindToViewsText) {
            tv.addTextChangedListener(this);
        }
        mBindToViewPaint = bindToViewsPaint;
    }
}
 

/**
 * z.chu
 * @param tv
 * @return  textview contentwidth
 */
public float getTextViewContentWidth(TextView tv) {
	TextPaint textPaint = tv.getPaint();
	return textPaint.measureText(tv.getText() + "");
}