android自定义弹出层

DialogShow.java

package com.asfman;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

public class DialogShow extends Activity {

    /** *//** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        Button btn = (Button) findViewById(R.id.button1);
        btn.setOnClickListener(new Button.OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                new Tip(DialogShow.this).show();
            }

        });
    }
}

Tip.java

package com.asfman;

import android.app.Dialog;
import android.content.Context;
import android.view.Gravity;
import android.view.View;
import android.view.ViewGroup;
import android.view.Window;
import android.view.WindowManager;
import android.widget.ImageView;

public class Tip {

    private ImageView image;
    private Dialog mDialog;

    public Tip(Context context) {
        mDialog = new Dialog(context, R.style.dialog);
        Window window = mDialog.getWindow();
        WindowManager.LayoutParams wl = window.getAttributes();
        wl.x = -30;
        wl.y = 20;
        window.setAttributes(wl);
        window.setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
                WindowManager.LayoutParams.FLAG_FORCE_NOT_FULLSCREEN);
        //window.setGravity(Gravity.CENTER);
        window.setLayout(ViewGroup.LayoutParams.FILL_PARENT,
                ViewGroup.LayoutParams.WRAP_CONTENT);
        mDialog.setContentView(R.layout.tip);
        mDialog.setFeatureDrawableAlpha(Window.FEATURE_OPTIONS_PANEL, 0);
        image = (ImageView) mDialog.findViewById(R.id.image);
        image.setOnClickListener(new ImageView.OnClickListener() {
            @Override
            public void onClick(View arg0) {
                mDialog.dismiss();
            }
        });
    }

    public void show() {
        mDialog.show();
    }

}

dialog.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <style name="dialog" parent="@android:style/Theme.Dialog">
<!--         <item name="android:windowFrame">@null</item> -->
<!--         <item name="android:windowIsFloating">true</item> -->
<!--         <item name="android:windowIsTranslucent">false</item> -->
        <item name="android:windowNoTitle">true</item>
        <item name="android:windowBackground">@null</item>
<!--         <item name="android:backgroundDimEnabled">false</item> -->
    </style>
</resources>

tip.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="300dp" android:layout_height="190dp"
    android:orientation="vertical" android:background="@drawable/blueinfowindow">
    <LinearLayout android:layout_width="fill_parent"
        android:layout_height="wrap_content" android:orientation="horizontal"
        android:id="@+id/upContent" android:layout_marginTop="30dp"
        android:layout_marginLeft="30dp">
        <TextView android:id="@+id/description" android:layout_width="220dp"
            android:layout_height="wrap_content"
            android:text="1.this is the test text!\n
            1.this is the test text!\n1.this is the test text!\n1.this is the test text!\n" android:textColor="#000000" />
        <ImageView android:id="@+id/image" android:background="@drawable/icon" android:layout_width="wrap_content" android:layout_height="wrap_content"/>    
    </LinearLayout>
</LinearLayout>