步骤11 编写setUp方法
现在可以收集数据去验证SimpleCalc的计算方法了。在setUp方法中，首先应该通过getActivity()方法获得当前的Activity,如下所示：
MainActivity mainActivity = getActivity();
接着，需要获得名为R.id.result的textview控件的实例，这个控件实际上保存计算器应用的运算结果的，代码如下所示：
package com.mamlambo.article.simplecalc.test;
import android.test.ActivityInstrumentationTestCase2;
import android.widget.TextView;
import com.mamlambo.article.simplecalc.MainActivity;
import com.mamlambo.article.simplecalc.R;
public class MathValidation extends ActivityInstrumentationTestCase2<MainActivity> {
private TextView result;
public MathValidation() {
super ("com.mamlambo.article.simplecalc", MainActivity.class);
}
@Override
protected void setUp() throws Exception {
super.setUp();
MainActivity mainActivity = getActivity();
result = (TextView) mainActivity.findViewById(R.id.result);
}
}
import android.test.ActivityInstrumentationTestCase2;
import android.widget.TextView;
import com.mamlambo.article.simplecalc.MainActivity;
import com.mamlambo.article.simplecalc.R;
public class MathValidation extends ActivityInstrumentationTestCase2<MainActivity> {
private TextView result;
public MathValidation() {
super ("com.mamlambo.article.simplecalc", MainActivity.class);
}
@Override
protected void setUp() throws Exception {
super.setUp();
MainActivity mainActivity = getActivity();
result = (TextView) mainActivity.findViewById(R.id.result);
}
}
