我正在尝试为学校制作应用程序,每次按下按钮时我都想制作一个弹出框。
但后来我收到了错误:
预期的课程或包
来自这行代码:
showPopUp.OnClickListener
第25行
public class MainActivity extends ActionBarActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button showPopUp = (Button) findViewById(R.id.button);
showPopUp.OnClickListener(new View.OnClickListener(){
@Override
public void onClick(View v) {
showSimplePopUp();
}
});
}
private void showSimplePopUp() {
AlertDialog.Builder helpBuilder = new AlertDialog.Builder(this);
helpBuilder.setTitle("Opening Line");
helpBuilder.setMessage("You popped my jingles up");
helpBuilder.setPositiveButton("Ok",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
// Do nothing but close the dialog
}
});
// Remember, create doesn't show the dialog
AlertDialog helpDialog = helpBuilder.create();
helpDialog.show();
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
答案 0 :(得分:2)
看起来像拼写错误,但应该是:
Button showPopUp = (Button) findViewById(R.id.button);
showPopUp.setOnClickListener(new View.OnClickListener(){
@Override
public void onClick(View v) {
showSimplePopUp();
}
});
答案 1 :(得分:0)
你可以试试这个:
private AlertDialog showSimplePopUp() {
AlertDialog.Builder helpBuilder = new AlertDialog.Builder(this);
helpBuilder.setTitle("Opening Line");
helpBuilder.setMessage("You popped my jingles up");
helpBuilder.setPositiveButton("Ok",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
// Do nothing but close the dialog
dialog.dismiss();
}
});
// Remember, create doesn't show the dialog
helpBuilder.show();
return helpBuilder.create();
}
希望它有所帮助!!!