解决TextView 中drawableleft 图片大小不可控问题

关键代码

drawable.setBounds(left, top, right, bottom);
textView.setCompoundDrawables(leftDrawable,rightDrawable,topDrawable,bottomDrawable);

使用效果

Screenshot_2017-05-27-14-17-48-229_free.com.timo.png

用法

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


    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="40dp"
        android:paddingLeft="15dp"
        android:paddingRight="15dp">

        <ImageView
            android:id="@+id/iv"
            android:layout_width="30dp"
            android:layout_height="30dp"
            android:layout_centerVertical="true"
            android:src="@mipmap/ic_launcher"
            />

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerVertical="true"
            android:layout_marginLeft="50dp"
            android:text="设置"
            android:textSize="20dp"
            />

        <ImageView
            android:layout_width="wrap_content"
            android:layout_height="20dp"
            android:layout_alignParentRight="true"
            android:layout_centerVertical="true"
            android:src="@mipmap/usercenter_grey_arrow"/>


    </RelativeLayout>


    <free.com.timo.view.widget.TextImageView
        android:layout_width="match_parent"
        android:layout_height="40dp"
        android:drawableLeft="@mipmap/ic_launcher"
        android:drawablePadding="20dp"
        android:drawableRight="@mipmap/usercenter_grey_arrow"
        android:gravity="center_vertical"
        android:paddingLeft="15dp"
        android:paddingRight="15dp"
        android:text="设置"
        android:textSize="20dp"
        app:drawableLeftHeight="30dp"
        app:drawableLeftWidth="30dp"
        app:drawableRightHeight="20dp"
        />


    <free.com.timo.view.widget.TextImageView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:drawableBottom="@mipmap/ic_launcher"
        android:drawableLeft="@mipmap/ic_launcher"
        android:drawableRight="@mipmap/ic_launcher"
        android:drawableTop="@mipmap/ic_launcher"
        android:gravity="center"
        android:text="你还可以这样"
        app:drawableBottomHeight="100dp"
        app:drawableBottomWidth="100dp"
        app:drawableLeftHeight="15dp"
        app:drawableLeftWidth="15dp"
        app:drawableRightHeight="50dp"
        app:drawableRightWidth="50dp"
        app:drawableTopHeight="30dp"
        app:drawableTopWidth="30dp"

        />


</LinearLayout>

属性值设定

   <declare-styleable name="TextImageView">
        <attr name="drawableLeftWidth" format="dimension"/>
        <attr name="drawableLeftHeight" format="dimension"/>
        <attr name="drawableTopWidth" format="dimension"/>
        <attr name="drawableTopHeight" format="dimension"/>
        <attr name="drawableRightWidth" format="dimension"/>
        <attr name="drawableRightHeight" format="dimension"/>
        <attr name="drawableBottomWidth" format="dimension"/>
        <attr name="drawableBottomHeight" format="dimension"/>
    </declare-styleable>

自定义view源码

import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Rect;
import android.graphics.drawable.Drawable;
import android.util.AttributeSet;

import free.com.timo.R;
import timber.log.Timber;

/**
 * @author Free
 * @version 1.0
 * @since 2017/5/27
 */
public class TextImageView extends android.support.v7.widget.AppCompatTextView {

    private int mLeftWidth;
    private int mLeftHeight;
    private int mTopWidth;
    private int mTopHeight;
    private int mRightWidth;
    private int mRightHeight;
    private int mBottomWidth;
    private int mBottomHeight;

    public TextImageView(Context context) {
        super(context);
    }

    public TextImageView(Context context, AttributeSet attrs) {
        super(context, attrs);
        init(context, attrs);
    }

    public TextImageView(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        init(context, attrs);
    }


    public void init(Context context, AttributeSet attrs) {
        TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.TextImageView);

        mLeftWidth = typedArray.getDimensionPixelOffset(R.styleable.TextImageView_drawableLeftWidth, 0);
        mLeftHeight = typedArray.getDimensionPixelOffset(R.styleable.TextImageView_drawableLeftHeight, 0);
        mTopWidth = typedArray.getDimensionPixelOffset(R.styleable.TextImageView_drawableTopWidth, 0);
        mTopHeight = typedArray.getDimensionPixelOffset(R.styleable.TextImageView_drawableTopHeight, 0);
        mRightWidth = typedArray.getDimensionPixelOffset(R.styleable.TextImageView_drawableRightWidth, 0);
        mRightHeight = typedArray.getDimensionPixelOffset(R.styleable.TextImageView_drawableRightHeight, 0);
        mBottomWidth = typedArray.getDimensionPixelOffset(R.styleable.TextImageView_drawableBottomWidth, 0);
        mBottomHeight = typedArray.getDimensionPixelOffset(R.styleable.TextImageView_drawableBottomHeight, 0);
        typedArray.recycle();
        setDrawablesSize();
    }

    private void setDrawablesSize() {
        Drawable[] compoundDrawables = getCompoundDrawables();
        Timber.d("Drawable size" + compoundDrawables.length + "value = " + compoundDrawables + "");
        for (int i = 0; i < compoundDrawables.length; i++) {
            switch (i) {
                case 0:
                    setDrawableBounds(compoundDrawables[0], mLeftWidth, mLeftHeight);
                    break;
                case 1:
                    setDrawableBounds(compoundDrawables[1], mTopWidth, mTopHeight);
                    break;
                case 2:
                    setDrawableBounds(compoundDrawables[2], mRightWidth, mRightHeight);
                    break;
                case 3:
                    setDrawableBounds(compoundDrawables[3], mBottomWidth, mBottomHeight);
                    break;
                default:

                    break;
            }

        }
        setCompoundDrawables(compoundDrawables[0], compoundDrawables[1], compoundDrawables[2], compoundDrawables[3]);
    }

    private void setDrawableBounds(Drawable drawable, int width, int height) {
        if (drawable != null) {
            double scale = ((double) drawable.getIntrinsicHeight()) / ((double) drawable.getIntrinsicWidth());
            Timber.d("width/height" + drawable.getIntrinsicWidth() + "," + drawable.getIntrinsicHeight());
            Timber.d("scale = %s", scale);
            drawable.setBounds(0, 0, width, height);
            Rect bounds = drawable.getBounds();
            //高宽只给一个值时，自适应
            if (bounds.right != 0 || bounds.bottom != 0) {
                Timber.d("before" + bounds.right + "," + bounds.bottom);
                if (bounds.right == 0) {
                    bounds.right = (int) (bounds.bottom / scale);
                    drawable.setBounds(bounds);
                }
                if (bounds.bottom == 0) {
                    bounds.bottom = (int) (bounds.right * scale);
                    drawable.setBounds(bounds);
                }
                Timber.d("after" + bounds.right + "," + bounds.bottom);
            }

        }
    }
}