android自定义dialog弹出框、透明背景

Dialog是android开发过程中最常用到的组件之一，它包括以下几种类型：
警告对话框：Alertialog
进度对话框：ProgressDialog
日期选择对话框：DatePickerDialog
时间选择对话框：TimePickerDialog
自定义对话框：从Dialog继承

Dialog的创建方式有两种：

一是直接new一个Dialog对象，然后调用Dialog对象的show和dismiss方法来控制对话框的显示和隐藏。

二是在Activity的onCreateDialog(int id)方法中创建Dialog对象并返回，然后调用Activty的showDialog(int id)和dismissDialog(int id)来显示和隐藏对话框。

区别在于通过第二种方式创建的对话框会继承Activity的属性，比如获得Activity的menu事件等。

-------------------------------------------------------------------------------------------------------------------------------------------------------------------



CondimentDialog.java

public class CondimentDialog extends Dialog{

 private Context mContext;

 private Button okButton;

 

 public CondimentDialog(Context context, int theme) {

  super(context,theme);

  mContext = context;

  requestWindowFeature(Window.FEATURE_NO_TITLE);

  setContentView(R.layout.dialog);

  

  

  LayoutParams params = getWindow().getAttributes(); 

  params.height = LayoutParams.WRAP_CONTENT;

  params.width = LayoutParams.WRAP_CONTENT;

  getWindow().setAttributes((android.view.WindowManager.LayoutParams) params);

 

  okButton = (Button)findViewById(R.id.btnOK);

  okButton.setText("shuosdhsfsdfsdf");

  okButton.setOnClickListener(new Button.OnClickListener(){

   public void onClick(View v) { 

   // TODO Auto-generated method stub 

    Log.e("dialog dismiss","dismiss+++++++++++++++++++++++++++"); 

        dismiss(); 

   

   } }

  ); 

   

 }

 

 protected void onStop() { 

  Log.e("dialog onStop","dialog onStop+++++++++++++++++++++++++++"); 

  }

}

TestAdroidtbActivity.java

 

public class TestAdroidtbActivity extends Activity {

    /** Called when the activity is first created. */

 

 private TextView textView;

 private Button button_ok;

 private Context mContext;

    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.main);

        

      

        textView = (TextView)this.findViewById(R.id.itemName);

        button_ok = (Button)this.findViewById(R.id.btnOK);

        

        button_ok.setOnClickListener(new OnClickListener() {

   

   @Override

   public void onClick(View v) {

    // TODO Auto-generated method stub

    Log.e("activity", "onclick....");  

    CondimentDialog dialog = new CondimentDialog(TestAdroidtbActivity.this,R.style.dialog);

    dialog.setCanceledOnTouchOutside(false);

    dialog.show();

   }

  });

    }

}

main.xml

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

 android:id="@+id/relmain"

    android:layout_width="200dp"

    android:layout_height="200dp"

    android:orientation="vertical"

    android:background="@color/tb">

 

 <TextView  

  android:id="@+id/itemName"

     android:layout_height="wrap_content" 

  android:layout_width="fill_parent" android:textSize="20dp"

  android:gravity="center"

  android:layout_marginTop="50px"

  android:layout_marginLeft="8px"

  android:layout_marginRight="8px" 

  android:text="弹出对话框"/> 

  

 <Button 

     android:id="@+id/btnOK"

     android:text="ok"

     android:layout_height="wrap_content" 

     android:layout_width="wrap_content" 

     android:gravity="center"

     android:layout_marginTop="80px"

  android:layout_marginLeft="15px"/>

</RelativeLayout>

dialog.xml 

 

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout

  xmlns:android="http://schemas.android.com/apk/res/android"

  android:orientation="horizontal"

  android:layout_width="819px"

  android:layout_height="483px"

  android:background="@drawable/pig">

    

    <Button 

     android:id="@+id/btnOK"

     android:text="ok"

     android:layout_height="wrap_content" 

     android:layout_width="wrap_content" 

     android:layout_gravity="center_vertical"

  android:layout_marginTop="180px"

  android:layout_marginLeft="300px"/>

</LinearLayout>

 styles.xml

 <?xml version="1.0" encoding="utf-8"?>

<resources>

 <style name="Transparent">

  <item name="android:windowBackground">@color/transparent_background</item>

     <item name="android:windowNoTitle">true</item>

 </style>

    

    <style name="dialog" parent="@android:style/Theme.Dialog">

        <item name="android:windowFrame">@null</item><!--边框-->

        <item name="android:windowIsFloating">true</item><!--是否浮现在activity之上-->

        <item name="android:windowIsTranslucent">false</item><!--半透明-->

        <item name="android:windowNoTitle">true</item><!--无标题-->

        <item name="android:windowBackground">@color/transparent</item><!--背景透明-->

        <item name="android:backgroundDimEnabled">false</item><!--模糊-->

    </style>

</resources>

color.xml

<?xml version="1.0" encoding="utf-8"?>

<resources>

 <color name="transparent_background">#880000AA</color>

 <color name="tb">#FFF000</color>

 <color name="transparent">#00FFFFFF</color>

</resources>