如何在ImageView周围对齐TextView？

Question

我试图在ImageView周围对齐TextView.我使用以下代码:

 private void createSpannableText(){
        TextView myTextView = (TextView) findViewById(R.id.textView);
        SpannableStringBuilder builder = new SpannableStringBuilder();
        builder.append(this.getText(R.string.loren__ipsum__max));
        int lengthOfPart1 = builder.length();
        builder.append(" ");
        builder.append(this.getText(R.string.lorem__ipsum));
        Drawable d = getResources().getDrawable(R.drawable.myImage);
        d.setBounds(0, 0, d.getIntrinsicWidth(), d.getIntrinsicHeight()); // <---- Very important otherwise your image won't appear
        ImageSpan myImage = new ImageSpan(d);
        builder.setSpan(myImage, 0, lengthOfPart1, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
        myTextView.setText(builder);
    }

但无法得到确切的结果.我该怎么办？在这种情况下我需要使用SpannableStringBuilder还是有另一种方法.请帮忙.我使用这个帖子http://majaxandroidtips.blogspot.in/2009/06/how-to-have-few-layout-elements-wrap_17.html 来获得解决方案.

PS:我还希望ImageView周围有6dp的边距

Answer 1

您可以使用android.text.style.LeadingMarginSpan.LeadingMarginSpan2API 8中提供的界面来实现此目的.这篇文章不是英文,而是使用您的浏览器进行翻译.此外,您可以直接从这里下载示例的源代码.

你的布局:

<?xml version="1.0" encoding="UTF-8"?>
<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:padding="5dp">
    <TextView
        android:textSize="18.0sp"
        android:id="@+id/message_view"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="@string/text" />
    <ImageView
        android:src="@drawable/icon"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/icon" />
</RelativeLayout>

助手类实现 LeadingMarginSpan.LeadingMarginSpan2

class MyLeadingMarginSpan2 implements LeadingMarginSpan.LeadingMarginSpan2 {
    private int margin;
    private int lines;

    MyLeadingMarginSpan2(int lines, int margin) {
        this.margin = margin;
        this.lines = lines;
    }

    /* ?????????? ????????, ?? ?????? ?????? ???? ???????? ?????? */
    @Override
    public int getLeadingMargin(boolean first) {
        if (first) {
            /*
             * ?????? ?????? ????? ???????? ? ?????????? ?????
             * ???????????? getLeadingMarginLineCount()
             */
            return margin;
        } else {
            // ?????? ??? ???? ????????? ?????
            return 0;
        }
    }

    @Override
    public void drawLeadingMargin(Canvas c, Paint p, int x, int dir, 
            int top, int baseline, int bottom, CharSequence text, 
            int start, int end, boolean first, Layout layout) {}

    /*
     * ?????????? ?????????? ?????, ? ??????? ?????? ???? 
     * ???????? ?????? ???????????? ??????? getLeadingMargin(true)
     * ?????????:
     * ?????? ??????????? ?????? ? N ??????? ??????? ?????????.
     */
    @Override
    public int getLeadingMarginLineCount() {
        return lines;
    }
};

您的活动代码:

 @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        String text = getString(R.string.text);

        // ???????? ?????? ? ?? ??????
        Drawable dIcon = getResources().getDrawable(R.drawable.icon);
        int leftMargin = dIcon.getIntrinsicWidth() + 10;

        // ????????????? ?????? ? R.id.icon
        ImageView icon = (ImageView) findViewById(R.id.icon);
        icon.setBackgroundDrawable(dIcon);

        SpannableString ss = new SpannableString(text);
        // ?????????? ?????? ??? ?????? ???? ????? ??????
        ss.setSpan(new MyLeadingMarginSpan2(3, leftMargin), 0, ss.length(), 0);

        TextView messageView = (TextView) findViewById(R.id.message_view);
        messageView.setText(ss);
    }

最后这里是一个演示结果: