Java TextViewCompat.getMaxLines方法代码示例

import android.support.v4.widget.TextViewCompat; //导入方法依赖的package包/类
@Override
public void onClickCard(View v, Update update) {
    // if card is clicked and the line count is bigger than 3 (meaning it can be expanded/"dexpanded")
    TextView tvText = v.findViewById(R.id.tv_updatecard_text);
    View viewExpand = v.findViewById(R.id.view_updatecard_expand);
    if (tvText.getLineCount() > 3) {
        // if current max lines is 3, expand to 100 lines, and else "dexpand" back to 3
        // it uses TextViewCompat instead of the given method for API 15 compatibility
        if (TextViewCompat.getMaxLines(tvText) == 3) {
            tvText.setMaxLines(100);
            viewExpand.setBackgroundResource(R.drawable.ic_arrow_drop_up_grey_600_24dp);
        } else {
            tvText.setMaxLines(3);
            viewExpand.setBackgroundResource(R.drawable.ic_arrow_drop_down_grey_600_24dp);
        }
    }
}
 

import android.support.v4.widget.TextViewCompat; //导入方法依赖的package包/类
public static boolean determineNumberOfValidGroupLines(FormEntryActivity activity,
                                                       Rect newRootViewDimensions,
                                                       boolean hasGroupLabel,
                                                       boolean shouldHideGroupLabel) {
    FrameLayout header = (FrameLayout)activity.findViewById(R.id.form_entry_header);
    TextView groupLabel = ((TextView)header.findViewById(R.id.form_entry_group_label));

    int numberOfGroupLinesAllowed =
            getNumberOfGroupLinesAllowed(groupLabel, newRootViewDimensions, activity);

    if (TextViewCompat.getMaxLines(groupLabel) != numberOfGroupLinesAllowed) {
        shouldHideGroupLabel = numberOfGroupLinesAllowed == 0;
        groupLabel.setMaxLines(numberOfGroupLinesAllowed);
        updateGroupViewVisibility(header, groupLabel, hasGroupLabel, shouldHideGroupLabel);
    }
    return shouldHideGroupLabel;
}
 

import android.support.v4.widget.TextViewCompat; //导入方法依赖的package包/类
public void onMeasure(int origWidthMeasureSpec, int origHeightMeasureSpec) {
    int widthMeasureSpec;
    int specWidthSize = MeasureSpec.getSize(origWidthMeasureSpec);
    int specWidthMode = MeasureSpec.getMode(origWidthMeasureSpec);
    int maxWidth = TabLayout.this.getTabMaxWidth();
    int heightMeasureSpec = origHeightMeasureSpec;
    if (maxWidth <= 0 || (specWidthMode != 0 && specWidthSize <= maxWidth)) {
        widthMeasureSpec = origWidthMeasureSpec;
    } else {
        widthMeasureSpec = MeasureSpec.makeMeasureSpec(TabLayout.this.mTabMaxWidth, Integer.MIN_VALUE);
    }
    super.onMeasure(widthMeasureSpec, heightMeasureSpec);
    if (this.mTextView != null) {
        Resources res = getResources();
        float textSize = TabLayout.this.mTabTextSize;
        int maxLines = this.mDefaultMaxLines;
        if (this.mIconView != null && this.mIconView.getVisibility() == 0) {
            maxLines = 1;
        } else if (this.mTextView != null && this.mTextView.getLineCount() > 1) {
            textSize = TabLayout.this.mTabTextMultiLineSize;
        }
        float curTextSize = this.mTextView.getTextSize();
        int curLineCount = this.mTextView.getLineCount();
        int curMaxLines = TextViewCompat.getMaxLines(this.mTextView);
        if (textSize != curTextSize || (curMaxLines >= 0 && maxLines != curMaxLines)) {
            boolean updateTextView = true;
            if (TabLayout.this.mMode == 1 && textSize > curTextSize && curLineCount == 1) {
                Layout layout = this.mTextView.getLayout();
                if (layout == null || approximateLineWidth(layout, 0, textSize) > ((float) layout.getWidth())) {
                    updateTextView = false;
                }
            }
            if (updateTextView) {
                this.mTextView.setTextSize(0, textSize);
                this.mTextView.setMaxLines(maxLines);
                super.onMeasure(widthMeasureSpec, heightMeasureSpec);
            }
        }
    }
}
 

import android.support.v4.widget.TextViewCompat; //导入方法依赖的package包/类
@Override
public void onMeasure(final int origWidthMeasureSpec, final int origHeightMeasureSpec) {
  final int specWidthSize = MeasureSpec.getSize(origWidthMeasureSpec);
  final int specWidthMode = MeasureSpec.getMode(origWidthMeasureSpec);
  final int maxWidth = getTabMaxWidth();

  final int widthMeasureSpec;
  final int heightMeasureSpec = origHeightMeasureSpec;

        if (maxWidth > 0 && (specWidthMode == MeasureSpec.UNSPECIFIED
                || specWidthSize > maxWidth)) {
    // If we have a max width and a given spec which is either unspecified or
    // larger than the max width, update the width spec using the same mode
    widthMeasureSpec = MeasureSpec.makeMeasureSpec(mTabMaxWidth, MeasureSpec.AT_MOST);
  } else {
    // Else, use the original width spec
    widthMeasureSpec = origWidthMeasureSpec;
  }

  // Now lets measure
  super.onMeasure(widthMeasureSpec, heightMeasureSpec);

  // We need to switch the text size based on whether the text is spanning 2 lines or not
  if (mTextView != null) {
    final Resources res = getResources();
    float textSize = mTabTextSize;
    int maxLines = mDefaultMaxLines;

    if (mIconView != null && mIconView.getVisibility() == VISIBLE) {
      // If the icon view is being displayed, we limit the text to 1 line
      maxLines = 1;
    } else if (mTextView != null && mTextView.getLineCount() > 1) {
      // Otherwise when we have text which wraps we reduce the text size
      textSize = mTabTextMultiLineSize;
    }

    final float curTextSize = mTextView.getTextSize();
    final int curLineCount = mTextView.getLineCount();
    final int curMaxLines = TextViewCompat.getMaxLines(mTextView);

    if (textSize != curTextSize || (curMaxLines >= 0 && maxLines != curMaxLines)) {
      // We've got a new text size and/or max lines...
      boolean updateTextView = true;

      if (mMode == MODE_FIXED && textSize > curTextSize && curLineCount == 1) {
        // If we're in fixed mode, going up in text size and currently have 1 line
        // then it's very easy to get into an infinite recursion.
        // To combat that we check to see if the change in text size
        // will cause a line count change. If so, abort the size change and stick
        // to the smaller size.
        final Layout layout = mTextView.getLayout();
                    if (layout == null || approximateLineWidth(layout, 0, textSize)
                > getMeasuredWidth() - getPaddingLeft() - getPaddingRight()) {
          updateTextView = false;
        }
      }

      if (updateTextView) {
        mTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, textSize);
        mTextView.setMaxLines(maxLines);
        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
      }
    }
  }
}
 

import android.support.v4.widget.TextViewCompat; //导入方法依赖的package包/类
final void update() {
  final Tab tab = mTab;
  final View custom = tab != null ? tab.getCustomView() : null;
  if (custom != null) {
    final ViewParent customParent = custom.getParent();
    if (customParent != this) {
      if (customParent != null) {
        ((ViewGroup) customParent).removeView(custom);
      }
      addView(custom);
    }
    mCustomView = custom;
    if (mTextView != null) {
      mTextView.setVisibility(GONE);
    }
    if (mIconView != null) {
      mIconView.setVisibility(GONE);
      mIconView.setImageDrawable(null);
    }

    mCustomTextView = (TextView) custom.findViewById(android.R.id.text1);
    if (mCustomTextView != null) {
      mDefaultMaxLines = TextViewCompat.getMaxLines(mCustomTextView);
    }
    mCustomIconView = (ImageView) custom.findViewById(android.R.id.icon);
  } else {
    // We do not have a custom view. Remove one if it already exists
    if (mCustomView != null) {
      removeView(mCustomView);
      mCustomView = null;
    }
    mCustomTextView = null;
    mCustomIconView = null;
  }

  if (mCustomView == null) {
    // If there isn't a custom view, we'll us our own in-built layouts
    if (mIconView == null) {
                ImageView iconView = (ImageView) LayoutInflater.from(getContext())
                  .inflate(R.layout.design_layout_tab_icon, this, false);
      addView(iconView, 0);
      mIconView = iconView;
    }
    if (mTextView == null) {
                TextView textView = (TextView) LayoutInflater.from(getContext())
                  .inflate(R.layout.design_layout_tab_text, this, false);
      addView(textView);
      mTextView = textView;
      mDefaultMaxLines = TextViewCompat.getMaxLines(mTextView);
    }
    TextViewCompat.setTextAppearance(mTextView, mTabTextAppearance);
    if (mTabTextColors != null) {
      mTextView.setTextColor(mTabTextColors);
    }
    updateTextAndIcon(mTextView, mIconView);
  } else {
    // Else, we'll see if there is a TextView or ImageView present and update them
    if (mCustomTextView != null || mCustomIconView != null) {
      updateTextAndIcon(mCustomTextView, mCustomIconView);
    }
  }

  // Finally update our selected state
  setSelected(tab != null && tab.isSelected());
}
 

import android.support.v4.widget.TextViewCompat; //导入方法依赖的package包/类
final void update() {
    View custom;
    Tab tab = this.mTab;
    if (tab != null) {
        custom = tab.getCustomView();
    } else {
        custom = null;
    }
    if (custom != null) {
        TabView customParent = custom.getParent();
        if (customParent != this) {
            if (customParent != null) {
                customParent.removeView(custom);
            }
            addView(custom);
        }
        this.mCustomView = custom;
        if (this.mTextView != null) {
            this.mTextView.setVisibility(8);
        }
        if (this.mIconView != null) {
            this.mIconView.setVisibility(8);
            this.mIconView.setImageDrawable(null);
        }
        this.mCustomTextView = (TextView) custom.findViewById(16908308);
        if (this.mCustomTextView != null) {
            this.mDefaultMaxLines = TextViewCompat.getMaxLines(this.mCustomTextView);
        }
        this.mCustomIconView = (ImageView) custom.findViewById(16908294);
    } else {
        if (this.mCustomView != null) {
            removeView(this.mCustomView);
            this.mCustomView = null;
        }
        this.mCustomTextView = null;
        this.mCustomIconView = null;
    }
    if (this.mCustomView == null) {
        if (this.mIconView == null) {
            ImageView iconView = (ImageView) LayoutInflater.from(getContext()).inflate(R.layout.design_layout_tab_icon, this, false);
            addView(iconView, 0);
            this.mIconView = iconView;
        }
        if (this.mTextView == null) {
            TextView textView = (TextView) LayoutInflater.from(getContext()).inflate(R.layout.design_layout_tab_text, this, false);
            addView(textView);
            this.mTextView = textView;
            this.mDefaultMaxLines = TextViewCompat.getMaxLines(this.mTextView);
        }
        this.mTextView.setTextAppearance(getContext(), TabLayout.this.mTabTextAppearance);
        if (TabLayout.this.mTabTextColors != null) {
            this.mTextView.setTextColor(TabLayout.this.mTabTextColors);
        }
        updateTextAndIcon(this.mTextView, this.mIconView);
    } else if (this.mCustomTextView != null || this.mCustomIconView != null) {
        updateTextAndIcon(this.mCustomTextView, this.mCustomIconView);
    }
}
 

import android.support.v4.widget.TextViewCompat; //导入方法依赖的package包/类
@Override
public void onMeasure(final int origWidthMeasureSpec, final int origHeightMeasureSpec) {
  final int specWidthSize = MeasureSpec.getSize(origWidthMeasureSpec);
  final int specWidthMode = MeasureSpec.getMode(origWidthMeasureSpec);
  final int maxWidth = getTabMaxWidth();

  final int widthMeasureSpec;
  final int heightMeasureSpec = origHeightMeasureSpec;

  if (maxWidth > 0 && (specWidthMode == MeasureSpec.UNSPECIFIED || specWidthSize > maxWidth)) {
    // If we have a max width and a given spec which is either unspecified or
    // larger than the max width, update the width spec using the same mode
    widthMeasureSpec = MeasureSpec.makeMeasureSpec(tabMaxWidth, MeasureSpec.AT_MOST);
  } else {
    // Else, use the original width spec
    widthMeasureSpec = origWidthMeasureSpec;
  }

  // Now lets measure
  super.onMeasure(widthMeasureSpec, heightMeasureSpec);

  // We need to switch the text size based on whether the text is spanning 2 lines or not
  if (textView != null) {
    float textSize = tabTextSize;
    int maxLines = defaultMaxLines;

    if (iconView != null && iconView.getVisibility() == VISIBLE) {
      // If the icon view is being displayed, we limit the text to 1 line
      maxLines = 1;
    } else if (textView != null && textView.getLineCount() > 1) {
      // Otherwise when we have text which wraps we reduce the text size
      textSize = tabTextMultiLineSize;
    }

    final float curTextSize = textView.getTextSize();
    final int curLineCount = textView.getLineCount();
    final int curMaxLines = TextViewCompat.getMaxLines(textView);

    if (textSize != curTextSize || (curMaxLines >= 0 && maxLines != curMaxLines)) {
      // We've got a new text size and/or max lines...
      boolean updateTextView = true;

      if (mode == MODE_FIXED && textSize > curTextSize && curLineCount == 1) {
        // If we're in fixed mode, going up in text size and currently have 1 line
        // then it's very easy to get into an infinite recursion.
        // To combat that we check to see if the change in text size
        // will cause a line count change. If so, abort the size change and stick
        // to the smaller size.
        final Layout layout = textView.getLayout();
        if (layout == null
            || approximateLineWidth(layout, 0, textSize)
                > getMeasuredWidth() - getPaddingLeft() - getPaddingRight()) {
          updateTextView = false;
        }
      }

      if (updateTextView) {
        textView.setTextSize(TypedValue.COMPLEX_UNIT_PX, textSize);
        textView.setMaxLines(maxLines);
        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
      }
    }
  }
}
 

import android.support.v4.widget.TextViewCompat; //导入方法依赖的package包/类
@Override
public void onMeasure(final int origWidthMeasureSpec, final int origHeightMeasureSpec) {
  final int specWidthSize = MeasureSpec.getSize(origWidthMeasureSpec);
  final int specWidthMode = MeasureSpec.getMode(origWidthMeasureSpec);
  final int maxWidth = getTabMaxWidth();

  final int widthMeasureSpec;
  final int heightMeasureSpec = origHeightMeasureSpec;

  if (maxWidth > 0 && (specWidthMode == MeasureSpec.UNSPECIFIED || specWidthSize > maxWidth)) {
    // If we have a max width and a given spec which is either unspecified or
    // larger than the max width, update the width spec using the same mode
    widthMeasureSpec = MeasureSpec.makeMeasureSpec(mTabMaxWidth, MeasureSpec.AT_MOST);
  } else {
    // Else, use the original width spec
    widthMeasureSpec = origWidthMeasureSpec;
  }

  // Now lets measure
  super.onMeasure(widthMeasureSpec, heightMeasureSpec);

  // We need to switch the text size based on whether the text is spanning 2 lines or not
  if (mTextView != null) {
    final Resources res = getResources();
    float textSize = mTabTextSize;
    int maxLines = mDefaultMaxLines;

    if (mIconView != null && mIconView.getVisibility() == VISIBLE) {
      // If the icon view is being displayed, we limit the text to 1 line
      maxLines = 1;
    } else if (mTextView != null && mTextView.getLineCount() > 1) {
      // Otherwise when we have text which wraps we reduce the text size
      textSize = mTabTextMultiLineSize;
    }

    final float curTextSize = mTextView.getTextSize();
    final int curLineCount = mTextView.getLineCount();
    final int curMaxLines = TextViewCompat.getMaxLines(mTextView);

    if (textSize != curTextSize || (curMaxLines >= 0 && maxLines != curMaxLines)) {
      // We've got a new text size and/or max lines...
      boolean updateTextView = true;

      if (mMode == MODE_FIXED && textSize > curTextSize && curLineCount == 1) {
        // If we're in fixed mode, going up in text size and currently have 1 line
        // then it's very easy to get into an infinite recursion.
        // To combat that we check to see if the change in text size
        // will cause a line count change. If so, abort the size change and stick
        // to the smaller size.
        final Layout layout = mTextView.getLayout();
        if (layout == null
            || approximateLineWidth(layout, 0, textSize)
                > getMeasuredWidth() - getPaddingLeft() - getPaddingRight()) {
          updateTextView = false;
        }
      }

      if (updateTextView) {
        mTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, textSize);
        mTextView.setMaxLines(maxLines);
        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
      }
    }
  }
}
 

import android.support.v4.widget.TextViewCompat; //导入方法依赖的package包/类
final void update() {
  final Tab tab = mTab;
  final View custom = tab != null ? tab.getCustomView() : null;
  if (custom != null) {
    final ViewParent customParent = custom.getParent();
    if (customParent != this) {
      if (customParent != null) {
        ((ViewGroup) customParent).removeView(custom);
      }
      addView(custom);
    }
    mCustomView = custom;
    if (mTextView != null) {
      mTextView.setVisibility(GONE);
    }
    if (mIconView != null) {
      mIconView.setVisibility(GONE);
      mIconView.setImageDrawable(null);
    }

    mCustomTextView = (TextView) custom.findViewById(android.R.id.text1);
    if (mCustomTextView != null) {
      mDefaultMaxLines = TextViewCompat.getMaxLines(mCustomTextView);
    }
    mCustomIconView = (ImageView) custom.findViewById(android.R.id.icon);
  } else {
    // We do not have a custom view. Remove one if it already exists
    if (mCustomView != null) {
      removeView(mCustomView);
      mCustomView = null;
    }
    mCustomTextView = null;
    mCustomIconView = null;
  }

  if (mCustomView == null) {
    // If there isn't a custom view, we'll us our own in-built layouts
    if (mIconView == null) {
      ImageView iconView =
          (ImageView)
              LayoutInflater.from(getContext())
                  .inflate(R.layout.design_layout_tab_icon, this, false);
      addView(iconView, 0);
      mIconView = iconView;
    }
    if (mTextView == null) {
      TextView textView =
          (TextView)
              LayoutInflater.from(getContext())
                  .inflate(R.layout.design_layout_tab_text, this, false);
      addView(textView);
      mTextView = textView;
      mDefaultMaxLines = TextViewCompat.getMaxLines(mTextView);
    }
    TextViewCompat.setTextAppearance(mTextView, mTabTextAppearance);
    if (mTabTextColors != null) {
      mTextView.setTextColor(mTabTextColors);
    }
    updateTextAndIcon(mTextView, mIconView);
  } else {
    // Else, we'll see if there is a TextView or ImageView present and update them
    if (mCustomTextView != null || mCustomIconView != null) {
      updateTextAndIcon(mCustomTextView, mCustomIconView);
    }
  }

  // Finally update our selected state
  setSelected(tab != null && tab.isSelected());
}