Android高速高斯模糊对话框

// MainActivity.java

package com.example.blurdemo;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.DialogInterface;
import android.content.DialogInterface.OnDismissListener;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.webkit.WebSettings.PluginState;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.Button;
public class MainActivity extends Activity {
	private Button button;
	private WebView webView;
	@SuppressWarnings("deprecation")
	@SuppressLint({ "SetJavaScriptEnabled", "InflateParams" })
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		final View contentView = LayoutInflater.from(this).inflate(R.layout.activity_main, null);
		setContentView(contentView);
		
		button = (Button) findViewById(R.id.button);
		webView = (WebView) findViewById(R.id.webView);
		button.setOnClickListener(new OnClickListener() {
			@Override
			public void onClick(View v) {
				button.setVisibility(View.GONE);
				SearchDialog dialog = new SearchDialog(MainActivity.this, contentView);
				dialog.show();
				dialog.setOnDismissListener(new OnDismissListener() {
					@Override
					public void onDismiss(DialogInterface dialog) {
						button.setVisibility(View.VISIBLE);
					}
				});
			}
		});
		webView.getSettings().setJavaScriptEnabled(true);
		webView.getSettings().setPluginState(PluginState.ON);
		webView.getSettings().setPluginsEnabled(true);
		webView.getSettings().setAllowFileAccess(true);
		webView.getSettings().setLoadWithOverviewMode(true);
		webView.getSettings().setUseWideViewPort(true);
		webView.loadUrl("http://3g.qq.com");
		webView.setWebViewClient(new WebViewClient() {
			@Override
			public boolean shouldOverrideUrlLoading(WebView view, String url) {
				view.loadUrl(url);
				return true;
			}
		});
	}
	static {
		System.loadLibrary("bitmap");
	}
}

// SearchDialog.java

package com.example.blurdemo;
import com.component.bitmap.jni.BitmapTools;
import com.component.bitmap.jni.ImageBlur;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.app.Dialog;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Matrix;
import android.graphics.Rect;
import android.os.Handler;
import android.os.Message;
import android.view.Display;
import android.view.View;
import android.widget.ImageView;
import android.widget.Toast;
public class SearchDialog extends Dialog {
	private ImageView bgImageView;
	private long startTime;
	public SearchDialog(final Context context) {
		super(context, R.style.searchDialog);
		setContentView(R.layout.dialog_search);
		bgImageView = (ImageView) findViewById(R.id.bgImageView);
		bgImageView.post(new Runnable() {
			@Override
			public void run() {
				startTime = System.currentTimeMillis();
				Bitmap bitmap = myShot((MainActivity) context);
				duBlue(bitmap);
			}
		});
	}
	public SearchDialog(Context context, final View view) {
		super(context, R.style.searchDialog);
		setContentView(R.layout.dialog_search);
		bgImageView = (ImageView) findViewById(R.id.bgImageView);
		bgImageView.post(new Runnable() {
			@Override
			public void run() {
				startTime = System.currentTimeMillis();
				Bitmap bitmap = BitmapTools.getBitmapFromView(view);
				duBlue(bitmap);
			}
		});
	}
	private void duBlue(final Bitmap srcBitmap) {
		new Thread() {
			public void run() {
				Bitmap bitmap = srcBitmap;
				int width = bitmap.getWidth();
				int height = bitmap.getHeight();
				bitmap = zoomImage(bitmap, 50, 50 * height / width);
				bitmap = ImageBlur.doBlurJniBitMap(bitmap, 5, true);
				bitmap = zoomImage(bitmap, width, height);
				Message message = new Message();
				long time = System.currentTimeMillis() - startTime;
				message.obj = bitmap;
				message.arg1 = (int) time;
				handler.sendMessage(message);
			};
		}.start();
	}
	@SuppressLint("HandlerLeak")
	private Handler handler = new Handler() {
		public void handleMessage(Message msg) {
			Bitmap bitmap = (Bitmap) msg.obj;
			bgImageView.setImageBitmap(bitmap);
			Toast.makeText(getContext(), "耗时 = " + msg.arg1 + "毫秒", Toast.LENGTH_SHORT).show();
		};
	};
	/***
	 * 图片的缩放方法
	 * 
	 * @param bgimage
	 *            ：源图片资源
	 * @param newWidth
	 *            ：缩放后宽度
	 * @param newHeight
	 *            ：缩放后高度
	 * @return
	 */
	public static Bitmap zoomImage(Bitmap bgimage, double newWidth, double newHeight) {
		// 获取这个图片的宽和高
		float width = bgimage.getWidth();
		float height = bgimage.getHeight();
		// 创建操作图片用的matrix对象
		Matrix matrix = new Matrix();
		// 计算宽高缩放率
		float scaleWidth = ((float) newWidth) / width;
		float scaleHeight = ((float) newHeight) / height;
		// 缩放图片动作
		matrix.postScale(scaleWidth, scaleHeight);
		Bitmap bitmap = Bitmap.createBitmap(bgimage, 0, 0, (int) width, (int) height, matrix, true);
		return bitmap;
	}
	@SuppressWarnings("deprecation")
	public Bitmap myShot(Activity activity) {
		// 获取windows中最顶层的view
		View view = activity.getWindow().getDecorView();
		view.buildDrawingCache();
		// 获取状态栏高度
		Rect rect = new Rect();
		view.getWindowVisibleDisplayFrame(rect);
		int statusBarHeights = rect.top;
		Display display = activity.getWindowManager().getDefaultDisplay();
		// 获取屏幕宽和高
		int widths = display.getWidth();
		int heights = display.getHeight();
		// 允许当前窗口保存缓存信息
		view.setDrawingCacheEnabled(true);
		// 去掉状态栏
		Bitmap bmp = Bitmap.createBitmap(view.getDrawingCache(), 0, statusBarHeights, widths, heights
				- statusBarHeights);
		// 销毁缓存信息
		view.destroyDrawingCache();
		return bmp;
	}
}

// activity_main.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="${relativePackage}.${activityClass}" >
    <WebView
        android:id="@+id/webView"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_centerHorizontal="true"
        android:layout_centerVertical="true" />
    <Button
        android:id="@+id/button"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="?œ???" />
</RelativeLayout>

// dialog_search.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >
    <ImageView
        android:id="@+id/bgImageView"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />
    <ImageView
        android:background="#55555555"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />
    <EditText
        android:id="@+id/editText1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:ems="10" >
        <requestFocus />
    </EditText>
</RelativeLayout>

// styles.xml

<resources>

    <!--
        Base application theme, dependent on API level. This theme is replaced
        by AppBaseTheme from res/values-vXX/styles.xml on newer devices.

    -->
    <style name="AppBaseTheme" parent="android:Theme.Light">
        <!--
            Theme customizations available in newer API levels can go in
            res/values-vXX/styles.xml, while customizations related to
            backward-compatibility can go here.

        -->
    </style>

    <!-- Application theme. -->
    <style name="AppTheme" parent="AppBaseTheme">
        <!-- All customizations that are NOT specific to a particular API-level can go here. -->
    </style>

    <style name="searchDialog">
        <item name="android:windowIsTranslucent">true</item>
        <item name="android:windowNoTitle">true</item>
        <item name="android:windowBackground">@android:color/transparent</item>
        <item name="android:backgroundDimEnabled">true</item>
    </style>

</resources>