如何将 android:drawable 设置为左​​侧和顶部？

Question

我只是想将图标设置在我的TextView 的左上角。 这是我的代码和输出：

<TextView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="@string/Content"
    android:drawableLeft="@drawable/icon" />

输出：

但我想像这样将我的图标设置在顶部和左侧：

Answer 1

为此，您必须像这样使用单独的 imageView，并且在 textview 字段中您必须添加一行代码 android:layout_toRightOf="@+id/imageView": 为了更好地理解，请参阅以下代码：

<RelativeLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content">
    <ImageView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/imageView"
        android:background="@mipmap/ic_launcher"
        />
    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
      android:layout_toRightOf="@+id/imageView"
        android:text="this si fodfjkhsdhaffjsdfasdfjhsdfhjsdhfjhsdfhsdhfhdsjfhsdjhfjhdsfhsdhfjhsdjhfjsdhfjhsdjfhjsdhfjhsdjfhjdshfsdjhfjsdhfsdkjhfjsdhfjhsdjfhjsdhjfhsdjhfjsdhfjhjsdhfjsdhjfhsdjf"
        />

</RelativeLayout>

Answer 2

使用下面的代码；

<TextView
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"
   android:text="@string/Content"
   android:drawableTop="@drawable/def"
   android:drawableLeft="@drawable/icon" />

Answer 3

您可以通过创建一个包裹您的 Drawable 的自定义 Drawable 来将复合绘图与顶部（或底部）对齐。

用法

GravityCompoundDrawable gravityDrawable = new GravityCompoundDrawable(innerDrawable);
// NOTE: next 2 lines are important!
innerDrawable.setBounds(0, 0, innerDrawable.getIntrinsicWidth(), innerDrawable.getIntrinsicHeight());
gravityDrawable.setBounds(0, 0, innerDrawable.getIntrinsicWidth(), innerDrawable.getIntrinsicHeight());
textView.setCompoundDrawables(gravityDrawable, null, null, null);

自定义 GravityCompoundDrawable 类：

public class GravityCompoundDrawable extends Drawable {

// inner Drawable
private final Drawable mDrawable;

public GravityCompoundDrawable(Drawable drawable) {
    mDrawable = drawable;
}

@Override
public int getIntrinsicWidth() {
    return mDrawable.getIntrinsicWidth();
}

@Override
public int getIntrinsicHeight() {
    return mDrawable.getIntrinsicHeight();
}

@Override
public void draw(Canvas canvas) {
    int halfCanvas= canvas.getHeight() / 2;
    int halfDrawable = mDrawable.getIntrinsicHeight() / 2;
    // align to top
    canvas.save();
    canvas.translate(0, -halfCanvas + halfDrawable);
    mDrawable.draw(canvas);
    canvas.restore();
 }
}

Answer 4

你可以使用setCompoundDrawablesWithIntrinsicBounds(int left, int top, int right, int bottom)

（为了更好地理解，请参阅此链接：）

https://developer.android.com/reference/android/widget/TextView.html#attr_android:drawableTop

Answer 5

此代码将帮助您并查看所附图片。

  <?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <LinearLayout
        android:id="@+id/llMain"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        android:weightSum="1">

        <LinearLayout
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="0.10"
            android:orientation="vertical">

            <ImageView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:src="@mipmap/ic_launcher" />

            <ImageView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:src="@mipmap/ic_launcher" />

        </LinearLayout>

        <TextView
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="0.90"
            android:text="It is a long established fact that a reader will be distracted by the readable content of a page when looking at its layout. The point of using Lorem Ipsum is that it has a more-or-less normal distribution of letters, as opposed to using" />
    </LinearLayout>
</LinearLayout>

https://i.stack.imgur.com/hLUGT.png

Answer 6

试试这个

<?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="match_parent">

<TextView
    android:id="@+id/tv1"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:text="hello world"
    android:layout_toEndOf="@+id/imageView" />



<ImageView
    android:id="@+id/imageView"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:src="@drawable/ic_error" />


</RelativeLayout>

Answer 7

SO 的任何解决方案都对我不起作用。最后我是这样做的：

class MyTextView @JvmOverloads constructor(context: Context, attrs: AttributeSet? = null
) : AppCompatTextView(context, style) {
    private val leftDrawable = ContextCompat.getDrawable(context, R.drawable.checkmark)

    override fun onDraw(canvas: Canvas?) {
        super.onDraw(canvas)
        setBulletPoint(compoundDrawables[0], canvas)
    }

    private fun setBulletPoint(drawableLeft: Drawable?, canvas: Canvas?) {
        if (!TextUtils.isEmpty(text)) {
            leftDrawable?.let { drlft ->
                if (lineCount == 1) {
                    setCompoundDrawablesWithIntrinsicBounds(drlft, null, null, null)
                } else {
                    val buttonWidth = drlft.intrinsicWidth
                    val buttonHeight = drlft.intrinsicHeight
                    val topSpace = abs(buttonHeight - lineHeight) / 2
           
                    drlft.setBounds(0, topSpace, buttonWidth, topSpace + buttonHeight)
                    canvas?.apply {
                        save()
                        drlft.draw(canvas)
                        restore()
                    }
                }
            }
        }
    }
}