【组合控件】android自定义控件之带文字的ImageView

android自带的ImageView控件是不能添加文字的，如果出现大量ImageView和TextView同时出现的布局，可以组合定义一个控件，将ImageView和TextView组合成一个控件

如下图所示：

public class ImageButtonWithText extends LinearLayout {
public ImageView imageView;
public TextView textView;
public ImageButtonWithText(Context context,AttributeSet attrs) {
super(context,attrs);
TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.ImageButtonWithText);
/*
 * 在attrs.xml添加属性：
 * <declare-styleable name="ImageButtonWithText">
 <attr name="picture" format="reference"/>
 </declare-styleable>
 * */
 int picture_id = a.getResourceId(R.styleable.ImageButtonWithText_picture,-1);
/**
 * Recycle the TypedArray, to be re-used by a later caller. After calling
 * this function you must not ever touch the typed array again.
 */
 a.recycle();
imageView = new ImageView(context, attrs);
imageView.setPadding(10, 10, 10, 10);
/**
 * Sets a drawable as the content of this ImageView.
 * This does Bitmap reading and decoding on the UI
 * thread, which can cause a latency hiccup. If that's a concern,
 * consider using setImageDrawable(android.graphics.drawable.Drawable) or
 * setImageBitmap(android.graphics.Bitmap) instead.
 * 直接在UI线程读取和解码Bitmap，可能会存在潜在的性能问题
 * 可以考虑使用 setImageDrawable(android.graphics.drawable.Drawable)
 * 或者setImageBitmap(android.graphics.Bitmap) 代替
 */
 imageView.setImageResource(picture_id);
textView =new TextView(context, attrs);
/**
 * Sets the horizontal alignment of the text and the
 * vertical gravity that will be used when there is extra space
 * in the TextView beyond what is required for the text itself.
 */
 //水平居中
 textView.setGravity(android.view.Gravity.CENTER_HORIZONTAL);
textView.setPadding(0, 0, 0, 0);
        setClickable(true);
        setFocusable(true);
        setOrientation(LinearLayout.VERTICAL);
        addView(imageView);
        addView(textView);
    }
public void setText(int resId) {
textView.setText(resId);
    }
public void setText(CharSequence buttonText) {
textView.setText(buttonText);
    }
public void setTextColor(int color) {
textView.setTextColor(color);
    }

布局文件中这么使用：

<com.uestcneon.chuji.changjianglife.share.ImageButtonWithText
    xmlns:custom="http://schemas.android.com/apk/res-auto"
    style="@style/hisCardTable"
    custom:picture="@mipmap/his_card_company"
    android:id="@+id/imgbtn_company"
    android:text="公司(1)" >
</com.uestcneon.chuji.changjianglife.share.ImageButtonWithText>

图片将通过自定义的custom:picture传递给ImageView控件，文字将通过android:text传递给TextView