int department;
Button search;
String display;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
department = 0;
search = (Button) findViewById(getResources().getIdentifier("btnSearch", "id", getPackageName()));
display = (String) findViewById(getResources().getIdentifier("tvDisplay", "id", getPackageName()));
search.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
if (department == 1)
{
display = "food";
}
我要做的是让一个用户输入一个数字,点击一个按钮,它将在我底部的textView上显示一个部门名称。但是,我有错误,我已经将它的几个部分转换为字符串而不是textView。我如何修复输出的位置?
display = (String) findViewById(getResources().getIdentifier("tvDisplay", "id", getPackageName()));
说它无法从View转换为String。
答案 0 :(得分:2)
试试这个:
TextView display = (TextView) findViewById(getResources().getIdentifier("tvDisplay", "id", getPackageName()));
// get the text
String displayString = (String)display.getText();
答案 1 :(得分:2)
问题是您正在将textview转换为字符串。您应该将display
的类型更改为TextView
,并使用其setText
方法在其中显示文字,请尝试以下代码:
int department;
Button search;
TextView display;
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
department = 0;
search = (Button) findViewById(getResources().getIdentifier("btnSearch", "id", getPackageName()));
display = (TextView) findViewById(getResources().getIdentifier("tvDisplay", "id", getPackageName()));
search.setOnClickListener(new View.OnClickListener()
{
public void onClick(View v)
{
// TODO Auto-generated method stub
if (department == 1)
{
display.setText("food");
}
}
});
}
答案 2 :(得分:0)
tvDisplay是TextView,而不是String。因此,显示一个TextView,找到视图,然后调用display.getText()来获取显示的文本。