Android Dialog自定义

2011-9-17 16:56:03 上传

 1 import android.app.Activity;
 2 import android.app.AlertDialog;
 3 import android.app.Dialog;
 4 import android.content.DialogInterface;
 5 import android.os.Bundle;
 6 import android.view.KeyEvent;
 7 import android.view.LayoutInflater;
 8 import android.view.Menu;
 9 import android.view.MenuItem;
10 import android.view.View;
11 import android.view.View.OnClickListener;
12 import android.widget.Button;
13 import android.widget.Toast;
14 
15 public class MyDialogActivity extends Activity {
16     /** Called when the activity is first created. */
17     @Override
18     public void onCreate(Bundle savedInstanceState) {
19         super.onCreate(savedInstanceState);
20         setContentView(R.layout.main);
21         Button button = (Button) findViewById(R.id.button1);
22         button.setOnClickListener(new OnClickListener() {
23 
24             @Override
25             public void onClick(View v) {
26                
27                 //初始化一个自定义的Dialog
28                 Dialog dialog = new MyDialog(MyDialogActivity.this,
29                         R.style.MyDialog);
30 
31                 dialog.show();
32             }
33         });
34 
35     }
36 }

主布局文件main.xml

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 3     android:orientation="vertical" android:layout_width="fill_parent"
 4     android:layout_height="fill_parent">
 5     <Button
 6         android:text="显示自定义Dialog"
 7         android:id="@+id/button1"
 8         android:layout_height="wrap_content"
 9         android:layout_width="fill_parent"/>
10 </LinearLayout>

新建一个自定义的Dialog类，取名MyDialog，继承自Dialog

 1 import android.app.Dialog;
 2 import android.content.Context;
 3 import android.os.Bundle;
 4 import android.view.LayoutInflater;
 5 import android.view.View;
 6 
 7 public class MyDialog extends Dialog {
 8 
 9     Context context;
10     public MyDialog(Context context) {
11         super(context);
12         // TODO Auto-generated constructor stub
13         this.context = context;
14     }
15     public MyDialog(Context context, int theme){
16         super(context, theme);
17         this.context = context;
18     }
19     @Override
20     protected void onCreate(Bundle savedInstanceState) {
21         // TODO Auto-generated method stub
22         super.onCreate(savedInstanceState);
23         this.setContentView(R.layout.dialog);
24     }
25 
26 }

相应的布局文件dialog.xml

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 3     android:orientation="vertical"
 4     android:layout_width="wrap_content"
 5     android:layout_height="wrap_content"
 6     android:gravity="center_vertical|center_horizontal"
 7     android:background="@drawable/dialog_bg">
 8     <RelativeLayout
 9         android:layout_width="fill_parent"
10         android:layout_height="wrap_content"
11         android:paddingLeft="30dip"
12         android:paddingTop="10dip">
13         <ImageView
14             android:id="@+id/dialog_title_image"
15             android:layout_alignParentLeft="true"
16             android:layout_width="wrap_content"
17             android:layout_height="wrap_content"
18             android:background="@drawable/dialog_title_image"/>
19         <TextView
20             android:layout_width="wrap_content"
21             android:layout_height="wrap_content"
22             android:layout_marginLeft="10dip"
23             android:layout_centerInParent="true"
24             android:text="Title"
25             android:layout_toRightOf="@id/dialog_title_image"
26             android:textColor="#000000"
27             android:textSize="30sp"/>
28         
29     </RelativeLayout>
30     <TextView
31             android:layout_width="fill_parent"
32             android:layout_height="1dip"
33             android:background="@drawable/lins"
34             android:layout_marginTop="5dip"/>
35     <TextView
36         android:layout_width="fill_parent"
37         android:layout_height="wrap_content"
38         android:text="This is a custom dialog"
39         android:textColor="#000000"
40         android:layout_marginTop="10dip"
41         android:layout_marginLeft="30dip"/>
42     <RelativeLayout
43         android:layout_width="fill_parent"
44         android:layout_height="wrap_content"
45         android:paddingTop="10dip"
46         android:gravity="bottom|center_horizontal"
47         android:paddingBottom="10dip">
48         <Button
49             android:id="@+id/dialog_button_cancel"
50             android:layout_alignParentLeft="true"
51             android:layout_width="100dip"
52             android:layout_height="wrap_content"
53             android:text="确定"/>
54         <Button
55             android:id="@+id/dialog_button_ok"
56             android:layout_width="100dip"
57             android:layout_height="wrap_content"
58             android:layout_toRightOf="@id/dialog_button_cancel"
59             android:layout_marginLeft="35dip"
60             android:text="取消"/>
61     </RelativeLayout>
62 </LinearLayout>

最主要的，是自定义的Style，我们自定义一个式样，用来改变默认的Dialog样式

在values文件夹下新建一个styles.xml文件，如下。。。

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <resources>
 3     <style name="MyDialog" parent="@android:Theme.Dialog">
 4         <item name="android:windowFrame">@null</item>
 5         <item name="android:windowNoTitle">true</item> 
 6         <item name="android:windowBackground">@drawable/dialog_bg</item>
 7         <item name="android:windowIsFloating">true</item>
 8         <item name="android:windowContentOverlay">@null</item>
 9     </style>
10 </resources>

这样应该就OK了

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2011-9-17 16:59:23 上传

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2011-9-17 16:59:29 上传

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另外一种方便的方法是：

 1 import android.app.Activity;
 2 import android.app.AlertDialog;
 3 import android.app.Dialog;
 4 import android.content.DialogInterface;
 5 import android.os.Bundle;
 6 import android.view.KeyEvent;
 7 import android.view.LayoutInflater;
 8 import android.view.Menu;
 9 import android.view.MenuItem;
10 import android.view.View;
11 import android.view.View.OnClickListener;
12 import android.widget.Button;
13 import android.widget.Toast;
14 
15 public class MyDialogActivity extends Activity {
16     /** Called when the activity is first created. */
17     @Override
18     public void onCreate(Bundle savedInstanceState) {
19         super.onCreate(savedInstanceState);
20         setContentView(R.layout.main);
21         Button button = (Button) findViewById(R.id.button1);
22         button.setOnClickListener(new OnClickListener() {
23 
24             @Override
25             public void onClick(View v) {
26 
27 //                Dialog dialog = new MyDialog(MyDialogActivity.this,
28 //                        R.style.MyDialog);
29 
30                 //此处直接new一个Dialog对象出来，在实例化的时候传入主题
31 
32                 Dialog dialog = new Dialog(MyDialogActivity.this, R.style.MyDialog);
33 
34                 //设置它的ContentView
35 
36                 dialog.setContentView(R.layout.dialog);
37 
38                 dialog.show();
39             }
40         });
41 
42     }
43 }