直播网站源码，Android中点击图片放大的简单方法

直播网站源码，Android中点击图片放大的简单方法

简单的思路就是把要放大的图片显示在一个对话框中显示出来

 

Java代码：

 

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<br>public void onThumbnailClick(View v) {<br>// final AlertDialog dialog = new AlertDialog.Builder(this).create();<br>// ImageView imgView = getView();<br>// dialog.setView(imgView);<br>// dialog.show();<br> <br> <br>// 全屏显示的方法<br>final Dialog dialog = new Dialog(this, android.R.style.Theme_Black_NoTitleBar_Fullscreen);<br>ImageView imgView = getView();<br>dialog.setContentView(imgView);<br>dialog.show();<br> <br> <br>// 点击图片消失<br>imgView.setOnClickListener(new OnClickListener() {<br>@Override<br>public void onClick(View v) {<br>// TODO Auto-generated method stub<br>dialog.dismiss();<br>}<br>});<br>}<br>private ImageView getView() {<br>ImageView imgView = new ImageView(this);<br>imgView.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT));<br>InputStream is = getResources().openRawResource(R.drawable.thumbnail);<br>Drawable drawable = BitmapDrawable.createFromStream(is, null);<br>imgView.setImageDrawable(drawable);<br> <br> <br>return imgView;<br>}

​

布局文件：

 

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<br><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"<br>    xmlns:tools="http://schemas.android.com/tools"<br>    android:layout_width="match_parent"<br>    android:layout_height="match_parent"<br>    android:paddingLeft="@dimen/activity_horizontal_margin"<br>    android:paddingRight="@dimen/activity_horizontal_margin"<br>    android:paddingTop="@dimen/activity_vertical_margin"<br>    android:paddingBottom="@dimen/activity_vertical_margin"<br>    tools:context=".MainActivity" ><br> <br> <br>    <ImageView <br>        android:layout_centerInParent="true"<br>        android:layout_width="wrap_content"<br>        android:layout_height="wrap_content"<br>        android:clickable="true"<br>        android:src="@drawable/thumbnail"<br>        android:onClick="onThumbnailClick"/><br></RelativeLayout><br>

 

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