Android对话框-下篇-之设置activity为Dialog

 

 

 

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package com.mrzhu.dialogtest;  

  

import android.app.Activity;  

import android.content.Intent;  

import android.os.Bundle;  

import android.view.View;  

  

public class DialogTestActivity extends Activity {  

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

    @Override  

    public void onCreate(Bundle savedInstanceState) {  

        super.onCreate(savedInstanceState);  

        setContentView(R.layout.main);  

    }  

      

    public void click(View v){  

        startActivity(new Intent(DialogTestActivity.this, Activity2.class));  

    }  

}  

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package com.mrzhu.dialogtest;  

  

import android.app.Activity;  

import android.os.Bundle;  

import android.view.Window;  

import android.view.WindowManager;  

import android.view.WindowManager.LayoutParams;  

  

public class Activity2 extends Activity {  

    @Override  

    protected void onCreate(Bundle savedInstanceState) {  

        super.onCreate(savedInstanceState);  

        setContentView(R.layout.activity2);  

        Window window = getWindow();  

        WindowManager.LayoutParams layoutParams = window.getAttributes();  

        //设置窗口的大小及透明度  

        layoutParams.width = LayoutParams.FILL_PARENT;  

        layoutParams.height = layoutParams.FILL_PARENT;  

        layoutParams.alpha = 0.5f;  

        window.setAttributes(layoutParams);  

    }  

}  

AndroidManifest.xml中加入：

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<activity  

           android:name=".Activity2"  

           android:theme="@style/Transparent" >  

       </activity>  

style.xml:

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

<resources>  

  

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

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

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

        <item name="android:windowAnimationStyle">@+android:style/Animation.Translucent</item>  

    </style>  

  

</resources>  

main.xml:

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<?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="fill_parent"  

    android:orientation="vertical" >  

  

    <Button  

        android:layout_width="fill_parent"  

        android:layout_height="wrap_content"  

        android:onClick="click"  

        android:text="click" />  

  

</LinearLayout>