求教 自定义控件的数据如何传给父activity

Question

重写onPickerChangeListener()方法。

Answer 1

非常感谢楼上回答，用接口实现了。
public class MyNumberPicker extends LinearLayout{    private Button mDefault;
    private Button mAdd;
    private Button mDel;
    private TextView tvValue;
    private int mValue = 0;    private MyNumPickerListener mNumPickerListener;    public MyNumberPicker(Context context, AttributeSet attrs) {
        super(context, attrs);
        this.setOrientation(HORIZONTAL);        mDefault = new Button(context,attrs);
        mDefault.setText("  +  ");
        mDefault.setTextSize(24);        mAdd = new Button(context,attrs);
        mAdd.setText("  +  ");
        mAdd.setVisibility(GONE);        mDel = new Button(context,attrs);
        mDel.setText("  -  ");
        mDel.setVisibility(GONE);        tvValue = new TextView(context,attrs);
        tvValue.setTextColor(Color.BLACK);
        tvValue.setTextSize(22);
        tvValue.setVisibility(GONE);        addView(mDefault);        addView(mAdd);
        addView(tvValue);
        addView(mDel);        mDefault.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                mValue +=1;
                tvValue.setText(String.valueOf(mValue));                if (mNumPickerListener != null) {
                    mNumPickerListener.getNumPickerValue(mValue);
                }                mAdd.setVisibility(VISIBLE);
                mDel.setVisibility(VISIBLE);
                tvValue.setVisibility(VISIBLE);                mDefault.setVisibility(GONE);
            }
        });        mAdd.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                mValue +=1;
                tvValue.setText(String.valueOf(mValue));                if (mNumPickerListener != null) {
                    mNumPickerListener.getNumPickerValue(mValue);
                }
            }
        });        mDel.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                if (mValue > 0){
                    mValue -=1;
                    tvValue.setText(String.valueOf(mValue));
                }
                if (mValue <= 0){
                    mAdd.setVisibility(GONE);
                    mDel.setVisibility(GONE);
                    tvValue.setVisibility(GONE);                    mDefault.setVisibility(VISIBLE);
                }                if (mNumPickerListener != null) {
                    mNumPickerListener.getNumPickerValue(mValue);
                }            }
        });    }    public int getValue(){
        return mValue;
    }    public void setValue(int val){
        mValue = val;
        tvValue.setText(String.valueOf(mValue));        if (mValue <= 0){
            mAdd.setVisibility(GONE);
            mDel.setVisibility(GONE);
            tvValue.setVisibility(GONE);            mDefault.setVisibility(VISIBLE);
        }else{
            mAdd.setVisibility(VISIBLE);
            mDel.setVisibility(VISIBLE);
            tvValue.setVisibility(VISIBLE);            mDefault.setVisibility(GONE);
        }
    }    public void setOnMyNumPickerListener(MyNumPickerListener listener){
        mNumPickerListener = listener;
    }    public  interface MyNumPickerListener {
        public void getNumPickerValue(Integer val);    }}

Answer 2

在activity 里面调用控件里写的getValue()返回啊

Answer 3

楼主你好，我也有和你一样的需求，就是在FragmentActivity里面调用这个接口时候会报错，想知道你是在调用接口时候如何处理的