//自定义加减器的view
public class AddDeleteView extends LinearLayout {
private OnAddDelClickListener listener;
private EditText etNumber;
//对外提供一个点击的回调接口
public interface OnAddDelClickListener {
void onAddClick(View v);
void onDelClick(View v);
}
public void setOnAddDelClickListener(OnAddDelClickListener listener) {
if (listener != null) {
this.listener = listener;
}
}
public AddDeleteView(Context context) {
this(context, null);
}
public AddDeleteView(Context context, @Nullable AttributeSet attrs) {
this(context, attrs, 0);
}
public AddDeleteView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
initView(context, attrs, defStyleAttr);
}
private void initView(Context context, AttributeSet attrs, int defStyleAttr) {
View.inflate(context, R.layout.adddelete, this);
TextView txtDelete = (TextView) findViewById(R.id.tv_delete);
TextView txtAdd = (TextView) findViewById(R.id.tv_add);
etNumber = (EditText) findViewById(R.id.ed_num);
TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.AddDeleteView);
String leftText = typedArray.getString(R.styleable.AddDeleteView_left_item);
String rightText = typedArray.getString(R.styleable.AddDeleteView_right_item);
String middleText = typedArray.getString(R.styleable.AddDeleteView_middle_item);
txtDelete.setText(leftText);
txtAdd.setText(rightText);
etNumber.setText(middleText);
//回收
typedArray.recycle();
txtDelete.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View view) {
listener.onDelClick(view);
}
});
txtAdd.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View view) {
listener.onAddClick(view);
}
});
}
//对外提供一个修改数字的方法
public void setNumber(int number) {
if (number > 0) {
etNumber.setText(number + "");
}
}
//对外提供一个获取当前数字的方法
public int getNumber() {
String string = etNumber.getText().toString();
int i = Integer.parseInt(string);
return i;
}
}
//自定义加减器的布局
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="@+id/tv_delete"
android:layout_width="31dp"
android:layout_height="31dp"
android:background="#999999"
android:gravity="center"
android:text="-" />
<EditText
android:id="@+id/ed_num"
android:layout_width="30dp"
android:layout_height="30dp"
android:background="@null"
android:gravity="center" />
<TextView
android:id="@+id/tv_add"
android:layout_width="31dp"
android:layout_height="31dp"
android:background="#999999"
android:gravity="center"
android:text="+" />
</LinearLayout>
//自定义的资源文件
<resources>
<declare-styleable name="AddDeleteView">
<attr name="left_item" format="string"></attr>
<attr name="right_item" format="string"></attr>
<attr name="middle_item" format="string"></attr>
</declare-styleable>
</resources>