Android学习之对话框(用户登录)
MyDialogDemo.java:
import android.app.Activity; import android.app.AlertDialog; import android.app.Dialog; import android.content.DialogInterface; import android.os.Bundle; import android.view.LayoutInflater; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; public class MyDialogDemo extends Activity { private Button mybut = null ; // 定义按钮 @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); super.setContentView(R.layout.main); // 调用布局管理器 this.mybut = (Button) super.findViewById(R.id.mybut) ; // 取得按钮 this.mybut.setOnClickListener(new OnClickListenerImpl()) ; // 设置事件类 } private class OnClickListenerImpl implements OnClickListener { @Override public void onClick(View view) { LayoutInflater factory = LayoutInflater.from(MyDialogDemo.this) ; View myView = factory.inflate(R.layout.login, null) ; Dialog dialog = new AlertDialog.Builder(MyDialogDemo.this) .setIcon(R.drawable.pic_m) .setTitle("用户登录") .setPositiveButton("登录", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { } }) .setNegativeButton("取消", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { } }).setView(myView).create(); dialog.show() ; } }
main.xml:
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent"> <Button android:id="@+id/mybut" android:text="用户登录" android:layout_width="wrap_content" android:layout_height="wrap_content"/> </LinearLayout>
login.xml:
<?xml version="1.0" encoding="utf-8"?> <TableLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent"> <TableRow> <TextView android:text="用户名:" android:layout_marginLeft="20dip" android:textSize="8pt" android:layout_width="wrap_content" android:layout_height="wrap_content"/> <EditText android:width="60pt" android:layout_height="wrap_content"/> </TableRow> <TableRow> <TextView android:text="密 码:" android:layout_marginLeft="20dip" android:textSize="8pt" android:layout_width="wrap_content" android:layout_height="wrap_content"/> <EditText android:password="true" android:width="60pt" android:layout_height="wrap_content"/> </TableRow> </TableLayout>
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