Question

我非常感谢明确的指示。这是来自谷歌Android开发教程但是，我找不到显示（膨胀）它的方法。 alertDialog.show（）导致程序在模拟器上崩溃。

public class HelloAndroidActivity extends Activity {
   /** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    AlertDialog.Builder builder;
    AlertDialog alertDialog;

    Context mContext = getApplicationContext();
    LayoutInflater inflater = (LayoutInflater)
    mContext.getSystemService(LAYOUT_INFLATER_SERVICE);
    View layout = inflater.inflate(R.layout.custom_dialog,
                                   (ViewGroup) findViewById(R.id.layout_root));

    TextView text = (TextView) layout.findViewById(R.id.text);
    text.setText("Hello, this is a custom dialog!");
    ImageView image = (ImageView) layout.findViewById(R.id.image);
    image.setImageResource(R.drawable.android);

    builder = new AlertDialog.Builder(mContext);
    builder.setView(layout);
    alertDialog = builder.create();
}

}

Answer 1

最后使用：

alertDialog.show();

Answer 2

我认为最容易和更可定制的方法是通过膨胀DialogFragment。

您在活动中执行以下操作：

FragmentTransaction ft = getFragmentManager().beginTransaction();
DialogFragment dfrag = new CustomDFrag();
dfrag.show(ft,"dialog");

然后创建扩展DialogFragment的类CustomDFrag。然后你重写onCreateDialog并使用你到目前为止所做的，但现在使用自定义布局：

@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
    LayoutInflater inflater = getActivity().getLayoutInflater();

    View view = inflater.inflate(R.layout.my_layout,null);

            //this is how you'd get a view from the inflated layout
    data = (TextView) view.findViewById(R.id.evo_addhist_data); 
    data.setText("lol");


            //tell the builder that you wan't that inflated layout to show
            // and then set the button (negative/positive in this case) if you want
    builder.setView(
            view)
            .setPositiveButton("OK",
                    new DialogInterface.OnClickListener() {
                        @Override
                        public void onClick(DialogInterface arg0, int arg1) {
                            // TODO Auto-generated method stub
                        }
                    })
            .setNegativeButton("CANCEL",
                    new DialogInterface.OnClickListener() {

                        @Override
                        public void onClick(DialogInterface dialog,
                                int which) {
                            // TODO Auto-generated method stub
                        }
                    });

    return builder.create();
}

ps。：我推荐这个，因为我觉得在不处理textview时会更好。

如何让这个Android自定义对话框出现（膨胀）？

2 个答案: