下面是示例代码,我正在尝试从setOnClickListener
方法的Spinner中为按钮validateUser
获取选定的值。
public class MainActivity extends Activity implements AdapterView.OnItemSelectedListener {
private Button validateUser;
private Spinner userTypeSpinner;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
userTypeSpinner=(Spinner)findViewById(R.id.userTypeSpinner);
validateUser= (Button) findViewById(R.id.userValidate);
validateUser.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Toast.makeText(getApplicationContext(), "Button is Selected", Toast.LENGTH_SHORT);
}
});
ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(this,
R.array.userTypeArray, android.R.layout.simple_spinner_item);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
userTypeSpinner.setAdapter(adapter);
userTypeSpinner.setOnItemSelectedListener(this);
}
@Override
public void onItemSelected(AdapterView<?> adapterView, View view, int i, long l) {
String item = adapterView.getItemAtPosition(i).toString();
Toast.makeText(adapterView.getContext(), "Selected: " + item, Toast.LENGTH_SHORT).show();
}
@Override
public void onNothingSelected(AdapterView<?> adapterView) {
}
}
最佳答案
烤面包需要显示。最后使用.show()
。Toast.makeText(getApplicationContext(), "Button is Selected", Toast.LENGTH_SHORT).show();
关于java - 不调用按钮setOnClickListener方法,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/30799360/