Android中自定义ImageView添加文字说明详解

public class MyImageTextViewNew extends LinearLayout {

 private ImageView mImageView = null;
 private TextView mTextView = null;
 private int imageId;
 private int textId, textColorId;

 public MyImageTextViewNew(Context context) {
  this(context, null);
 }

 public MyImageTextViewNew(Context context, @Nullable AttributeSet attrs) {
  this(context, attrs, 0);
 }

 public MyImageTextViewNew(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
  super(context, attrs, defStyleAttr);
  this.setOrientation(LinearLayout.VERTICAL);//设置垂直排序
  this.setGravity(Gravity.CENTER);//设置居中
  if (mImageView == null) {
   mImageView = new ImageView(context);
  }
  if (mTextView == null) {
   mTextView = new TextView(context);
  }
  if (attrs == null)
   return;
  int count = attrs.getAttributeCount();
  for (int i = 0; i < count; i++) {
   String attrName = attrs.getAttributeName(i);//获取属性名称
   //根据属性获取资源ID
   switch (attrName) {
    //显示的图片
    case "image":
     imageId = attrs.getAttributeResourceValue(i, 0);
     break;
    //显示的文字
    case "text":
     textId = attrs.getAttributeResourceValue(i, 0);
     break;
    //显示的文字的颜色
    case "textColor":
     textColorId = attrs.getAttributeResourceValue(i, 0);
     break;
   }
  }
  init();
 }

 /**
  * 初始化状态
  */
 private void init() {
  this.setText(textId);
  mTextView.setGravity(Gravity.CENTER);//字体居中
  this.setTextColor(textColorId);
  this.setImgResource(imageId);
  addView(mImageView);//将图片控件加入到布局中
  addView(mTextView);//将文字控件加入到布局中
 }

 /**
  * 设置显示的图片
  *
  * @param resourceID 图片ID
  */
 private void setImgResource(int resourceID) {
  if (resourceID == 0) {
   this.mImageView.setImageResource(0);
  } else {
   this.mImageView.setImageResource(resourceID);
  }
 }

 /**
  * 设置显示的文字
  *
  * @param text
  */
 public void setText(int text) {
  this.mTextView.setText(text);
 }

 /**
  * 设置字体颜色(默认为黑色)
  *
  * @param color
  */
 private void setTextColor(int color) {
  if (color == 0) {
   this.mTextView.setTextColor(Color.BLACK);
  } else {
   this.mTextView.setTextColor(getResources().getColor(color));
  }
 }

}

<?xml version="1.0" encoding="utf-8"? 
<resources 

 <declare-styleable name="imageText" 
  <attr name="image" format="integer" / 
  <attr name="text" format="integer" / 
  <attr name="textColor" format="integer" / 
 </declare-styleable 
 
</resources