界面中显示NumberPicker，修改字体大小

package com.example.numberpicker_3;import android.app.Activity;import android.app.AlertDialog;import android.os.Bundle;import android.view.Menu;import android.view.MenuItem;import android.widget.NumberPicker;import android.widget.TextView;import android.widget.Toast;import android.widget.NumberPicker.OnValueChangeListener;public class MainActivity extends Activity {private  QNumberPicker numPicker;private TextView textView1;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);textView1=(TextView)findViewById(R.id.textView1);numPicker=(QNumberPicker)findViewById(R.id.num_picker_1);numPicker.setMinValue(0);numPicker.setMaxValue(100);numPicker.setOnValueChangedListener(new OnValueChangeListener() {@Overridepublic void onValueChange(NumberPicker picker, int oldVal, int newVal) {// TODO 自动生成的方法存根//Toast.makeText(MainActivity.this, "当前值是:"+newVal, Toast.LENGTH_SHORT).show();textView1.setText(newVal+"");}});}//onCreate}

package com.example.numberpicker_3;import android.content.Context;import android.graphics.Color;import android.util.AttributeSet;import android.view.View;import android.widget.EditText;import android.widget.NumberPicker;public class QNumberPicker extends NumberPicker {    public QNumberPicker(Context context) {        super(context);    }    public QNumberPicker(Context context, AttributeSet attrs) {        super(context, attrs);    }    public QNumberPicker(Context context, AttributeSet attrs, int defStyleAttr) {        super(context, attrs, defStyleAttr);    }    @Override    public void addView(View child) {        super.addView(child);        updateView(child);    }    @Override    public void addView(View child, int index,                        android.view.ViewGroup.LayoutParams params) {        super.addView(child, index, params);        updateView(child);    }    @Override    public void addView(View child, android.view.ViewGroup.LayoutParams params) {        super.addView(child, params);        updateView(child);    }    public void updateView(View view) {        if (view instanceof EditText) {            //这里修改字体的属性            ((EditText) view).setTextColor(Color.parseColor("#000000"));            ((EditText) view).setTextSize(20);        }    }}

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