Android App中建议使用DialogFragment作为对话框的容器,DialogFragment类提供了创建对话框并管理其外观需要的所有控件,本文主要内容便为详解Android应用中DialogFragment的基本用法,而不再需要调用Dialog的方法需要的朋友可以参考下
DialogFragment的基本用法
1. 创建DialogFragment
public class DialogA extends DialogFragment implements DialogInterface.OnClickListener {
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
builder.setMessage(R.string.dialoga_title)
.setPositiveButton(R.string.ok, this)
.setNegativeButton(R.string.cancel, this);
return builder.create();
}
@Override
public void onClick(DialogInterface dialog, int id) {
switch(id) {
case AlertDialog.BUTTON_NEGATIVE:
Toast.makeText(getActivity(), "Negative", Toast.LENGTH_SHORT).show();
break;
case AlertDialog.BUTTON_POSITIVE:
Toast.makeText(getActivity(), "Positive", Toast.LENGTH_SHORT).show();
break;
default:
break;
}
}
}
说明：自定义一个DialogFragment，并重写它的onCreateDialog()方法。
2. 调用该DialogFragment
下面是在FragmentActivity中调用该DialogFragment对话框。
public class DialogTest extends FragmentActivity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
showDialog();
}
private void showDialog() {
FragmentManager fm = getSupportFragmentManager();
DialogA dialoga = new DialogA();
dialoga.show(fm, "fragmenta");
}
}
自定义DialogFragment布局
下面介绍自定义DialogFragment的布局的方法
点击查看：自定义DialogFragment布局的完整代码
1. 设置布局文件
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://www.easck.com/apk/res/android" xmlns:tools="http://www.easck.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" > <TextView android:layout_width="match_parent" android:layout_height="wrap_content" android:hint="@string/dialoga_intro" /> <ImageView android:id="@+id/image" android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@drawable/ic_action_video" /> </LinearLayout>
