我有一个TextViewer Activity,它有一个按钮,当我单击它时,我想弹出一个带有列表的AlertDialog。我遵循了这个link,但是它不起作用(没有弹出窗口)。我认为背景是错误的。
我使用以下代码:
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.resources);
ImageButton btnlist = (ImageButton)findViewById(R.id.list);
btnlist.setOnClickListener(new View.OnClickListener() {
public void onClick (View v){
if (Vars.bookchapter>1){
final CharSequence[] items = {"Red", "Green", "Blue"};
Context mContext = getBaseContext();
AlertDialog.Builder builder = new AlertDialog.Builder(mContext);
builder.setTitle("Pick a color");
builder.setItems(items, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int item) {
Toast.makeText(getApplicationContext(), items[item], Toast.LENGTH_SHORT).show();
}
});
AlertDialog alert = builder.create();
}else{
//Nothing
}
}});
}
}
最佳答案
您尚未调用show()
方法。做这个:
AlertDialog alert = builder.create();
alert.show();
关于android - 自定义AlertDialog不显示,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/3160231/