Android入门/AlertDialog(十)

来源：互联网发布：西门子plc编程软件xp 编辑：程序博客网时间：2024/05/17 23:22

1. 实现系统自带的AlertDialog

2. 实现自定义Layout的AlertDialog

3. 更改AlertDialog的Theme

先上效果图

1. main.xml

<LinearLayout     xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:orientation="vertical"    android:layout_width="match_parent"    android:layout_height="match_parent" >    <Button         android:id="@+id/yes"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="使用Layout的对话框"/><Button     android:id="@+id/no"    android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:text="默认样式的对话框"/></LinearLayout>

2. 自定义AlertDialog的布局文件dialog.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout     xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"    android:layout_height="wrap_content"android:orientation="vertical"><EditText     android:layout_height="wrap_content"android:layout_width="fill_parent" android:layout_marginLeft="20dip"android:layout_marginRight="20dip" android:textAppearance="?android:attr/textAppearanceMedium" android:id="@+id/edtInput"/></LinearLayout>

android:textAppearance= "";

3. java代码

public class MainActivity extends Activity {private Button yes;private Button no;        public void onCreate(Bundle savedInstanceState)     {        super.onCreate(savedInstanceState);                 preInitUI();        postInitUI();         }    public void preInitUI()    {     setContentView(R.layout.activity_main);     yes = (Button)findViewById(R.id.yes);         no = (Button)findViewById(R.id.no);    }        public void postInitUI()    {      yes.setOnClickListener(listener);          no.setOnClickListener(listener);    }        private OnClickListener listener = new OnClickListener() {public void onClick(View v) {switch (v.getId()) {case R.id.no:showDialog(MainActivity.this);break;case R.id.yes:showDialog_Layout(MainActivity.this);break;}}};// 显示基本的Dialogpublic void showDialog(Context context){// 1. 创建一个builder对象AlertDialog.Builder builder = new AlertDialog.Builder(context);// 2.set 相关的值 或属性builder.setIcon(R.drawable.xuehua);    builder.setTitle("Title");      builder.setMessage("Message");      builder.setPositiveButton("Name A", new DialogInterface.OnClickListener()    {public void onClick(DialogInterface dialog, int which) { setTitle("点击了对话框上的Name A");  }    });    builder.setNeutralButton("Name B", new DialogInterface.OnClickListener()    {public void onClick(DialogInterface dialog, int which) { setTitle("点击了对话框上的Name B");  }    });    builder.setNegativeButton("Name C", new DialogInterface.OnClickListener()    {public void onClick(DialogInterface dialog, int which) { setTitle("点击了对话框上的Name C");  }    });    // 展示     builder.show();}    public void showDialog_Layout(Context context){  LayoutInflater inflater =  (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);    // 绑定 布局   View view = inflater.inflate(R.layout.dialog, null);  //到绑定布局内的 子控件  final EditText edtInput=(EditText)view.findViewById(R.id.edtInput);      AlertDialog.Builder builder = new AlertDialog.Builder(new ContextThemeWrapper(context, R.style.AppTheme));        builder.setCancelable(false);//设置为false，按返回键不能退出。默认为true。          builder.setIcon(R.drawable.hong);          builder.setTitle("Title");          builder.setView(view);          builder.setPositiveButton("确认",new DialogInterface.OnClickListener() {                      public void onClick(DialogInterface dialog, int whichButton) {                          setTitle(edtInput.getText());                      }          });          builder.setNegativeButton("取消",                  new DialogInterface.OnClickListener() {                      public void onClick(DialogInterface dialog, int whichButton) {                         finish();                    }          });          builder.show();  }    }