界面上有兩個輸入框,默認值爲0,一個文本輸出框,一個按鈕;輸入數字後點擊Button計算;
xml中輸入框有個屬性android:inputType=”number”記得注意下。
代碼如下:
private EditText input1;
private EditText input2;
private TextView textView;
int num = 0;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
input1 = (EditText)findViewById(R.id.shurukuan);
input2 = (EditText)findViewById(R.id.shurukuan2);
textView = (TextView)findViewById(R.id.textView2);
Button Btn1 = (Button)findViewById(R.id.button3);
Btn1.setOnClickListener(new Button.OnClickListener(){
public void onClick(View v) {
num= Integer.parseInt(input1.getText().toString()) + Integer.parseInt(input2.getText().toString());
textView.setText(Integer.toString(num));
}
});
}