两个数的相乘

最新推荐文章于 2023-09-18 23:24:09 发布

nchu_laizhibing

最新推荐文章于 2023-09-18 23:24:09 发布

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分类专栏： Android

本文链接：https://blog.youkuaiyun.com/u010324384/article/details/9075111

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public class Activity03 extends Activity {
private EditText factor1 = null;
private EditText factor2 = null;
private TextView symbol = null;
private Button calculator = null;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        factor1 = (EditText)this.findViewById(R.id.factorOne);
        factor2 = (EditText)this.findViewById(R.id.factorTwo);
        symbol = (TextView)this.findViewById(R.id.symbol);
        symbol.setText("乘以");
        calculator = (Button)this.findViewById(R.id.calculator);
        calculator.setText("计算");
        calculator.setOnClickListener(new Calculator());
    }
    class Calculator implements OnClickListener{

    @Override
    public void onClick(View v) {
      // TODO Auto-generated method stub
      Intent intent = new Intent();
      String str1 = factor1.getText().toString().trim();
      String str2 = factor2.getText().toString().trim();
      intent.putExtra("factor1", str1);
      intent.putExtra("factor2", str2);
      intent.setClass(Activity03.this, ResultActivity.class);
      Activity03.this.startActivity(intent);
    }
    }
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.activity03, menu);
        return true;
    }
}

ResultActivity

public class ResultActivity extends Activity {
private TextView result = null;
@Override
protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_result);
  Intent intent = this.getIntent();
  String factor1 = intent.getStringExtra("factor1");
  String factor2 = intent.getStringExtra("factor2");
  result = (TextView)this.findViewById(R.id.result);
  int n1 = Integer.parseInt(factor1);
  int n2 = Integer.parseInt(factor2);
  result.setText(""+(n1*n2));
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
  // Inflate the menu; this adds items to the action bar if it is present.
  getMenuInflater().inflate(R.menu.result, menu);
  return true;
}
}