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官方关于Dialog的介绍

2024-07-03 20:56:36   227人阅读

将Activity显示成Dialog的形式：

Tip: If you want a custom dialog, you can instead display an Activity as a dialog instead of using the Dialog APIs. Simply create an activity and set its theme to Theme.Holo.Dialog in the <activity> manifest element:

<activityandroid:theme="@android:style/Theme.Holo.Dialog">

That‘s it. The activity now displays in a dialog window instead of fullscreen.

 

将dialog的按钮点击事件传递给Activity:

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package leihu.dialogtoactivity;
 
import android.annotation.SuppressLint;
import android.app.DialogFragment;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
 
public class MainActivity extends FragmentActivity  implements NoticeDialogFragment.NoticeDialogListener{
     
    @Override
    protected void onCreate(Bundle savedInstaceState) {
        super.onCreate(savedInstaceState);
        setContentView(R.layout.activity_main);
        showNoticeDialog();
    }
 
    @SuppressLint("NewApi")
    public void showNoticeDialog(){
        DialogFragment dialog = new NoticeDialogFragment();
        dialog.show(getFragmentManager(), "NoticeDialogFragment");
         
    }
     
    @Override
    public void onDialogPositiveClick(DialogFragment dialog) {
        // TODO Auto-generated method stub
        System.out.println( "Positive button is pressed");
    }
 
    @Override
    public void onDialogNegativeClick(DialogFragment dialog) {
        // TODO Auto-generated method stub
        System.out.println("Negative button is pressed");
    }
 
 
}

　　

 

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package leihu.dialogtoactivity;
 
import android.annotation.SuppressLint;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.app.DialogFragment;
import android.content.DialogInterface;
import android.os.Bundle;
 
@SuppressLint("NewApi")
public class NoticeDialogFragment extends DialogFragment{
     
    public interface NoticeDialogListener{
        public void onDialogPositiveClick(DialogFragment dialog);
        @SuppressLint("NewApi")
        public void onDialogNegativeClick(DialogFragment dialog);
    }
     
    NoticeDialogListener mListener;
 
    @SuppressLint("NewApi")
    @Override
    public void onAttach(Activity activity) {    //Called when a fragment is first attached to its activity 　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　//<code><a href="http://i.cnblogs.com/reference/android/app/Fragment.html#onCreate(android.os.Bundle)">onCreate(Bundle)</a></code> will be called after this.
        super.onAttach(activity);
        try {
            mListener = (NoticeDialogListener) activity;
        } catch (Exception e) {
            throw new ClassCastException(activity.toString()
                    + " must implement NoticeDialogListener");
        }
    }
 
    @SuppressLint("NewApi")
    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
        builder.setMessage("fire missiles")
            .setPositiveButton("frie", new DialogInterface.OnClickListener() {
                 
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    mListener.onDialogPositiveClick(NoticeDialogFragment.this);
                }
            })
             .setNegativeButton("cancel", new DialogInterface.OnClickListener() {
                 
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    mListener.onDialogNegativeClick(NoticeDialogFragment.this);
                }
            });
        return builder.create();
    }
     
     
     
     
}

　　


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