Android 毛玻璃效果對話方塊
阿新 • • 發佈：2019-02-07
一個popwindow，在彈出的時候背景是原介面的截圖加高斯模糊效果
先給出popwindow的佈局檔案
<?xml version="1.0" encoding="utf-8"?> <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/FrameLayout1" android:layout_width="match_parent" android:layout_height="match_parent" android:background="@drawable/roundcorner" > <com.npi.blureffect.ScrollableImageView android:id="@+id/imageView1" android:background="@drawable/roundcorner" android:layout_width="match_parent" android:layout_height="match_parent" android:src="@drawable/roundcorner" /> <RelativeLayout android:id="@+id/RelativeLayout1" android:layout_width="match_parent" android:layout_height="match_parent" > <TextView android:id="@+id/textView1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentLeft="false" android:layout_alignParentTop="false" android:layout_centerHorizontal="true" android:layout_centerInParent="false" android:layout_centerVertical="false" android:layout_marginLeft="33dp" android:layout_marginTop="44dp" android:text="這是提示語" /> <TextView android:id="@+id/textView2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentLeft="false" android:layout_below="@+id/textView1" android:layout_centerHorizontal="true" android:layout_marginTop="49dp" android:text="確定" android:textAppearance="?android:attr/textAppearanceLarge" /> </RelativeLayout> </FrameLayout>
</pre>裡面那個自定義imageView控制元件在我上一篇部落格裡<p></p><p>下面是activity的佈局</p><p></p><pre name="code" class="html"><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:id="@+id/window" android:layout_width="match_parent" android:layout_height="match_parent" android:paddingBottom="@dimen/activity_vertical_margin" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin" tools:context="com.npi.blureffect.TestActivity" > <TextView android:id="@+id/textView1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/hello_world" /> <RatingBar android:id="@+id/ratingBar1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignLeft="@+id/textView1" android:layout_below="@+id/textView1" android:layout_marginTop="124dp" /> <Switch android:id="@+id/switch1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignLeft="@+id/ratingBar1" android:layout_below="@+id/ratingBar1" android:layout_marginLeft="24dp" android:layout_marginTop="81dp" android:text="Switch" /> <Button android:id="@+id/button1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignRight="@+id/ratingBar1" android:layout_below="@+id/ratingBar1" android:text="Button" /> <Button android:id="@+id/button2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignBottom="@+id/ratingBar1" android:layout_alignLeft="@+id/switch1" android:layout_marginBottom="52dp" android:text="Button" /> <TextView android:id="@+id/textView2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignBottom="@+id/button1" android:layout_alignLeft="@+id/ratingBar1" android:text="Large Text" android:textAppearance="?android:attr/textAppearanceLarge" /> </RelativeLayout>
用於圓角的背景xml，放在drawable資料夾中
<?xml version="1.0" encoding="UTF-8" ?> <layer-list xmlns:android="http://schemas.android.com/apk/res/android"> <item> <shape> <solid android:color="#efefef" /><!-- 連框顏色值 --> <!-- 設定圓角邊框 --> <corners android:topLeftRadius="20dp" android:topRightRadius="20dp" android:bottomRightRadius="20dp" android:bottomLeftRadius="20dp" /> </shape> </item> <!-- 主體背景顏色值 --> <item android:bottom="20dp" android:top="20dp" android:left="20dp" android:right="20dp"> <!--上下左右四個邊框的寬度，為0的話就沒有了--> <shape> <solid android:color="#efefef" /> <!-- 背景白色 --> </shape> </item> </layer
activity的原始碼
package com.npi.blureffect;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.Point;
import android.os.Build;
import android.os.Bundle;
import android.util.Log;
import android.view.Display;
import android.view.Gravity;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup.LayoutParams;
import android.widget.PopupWindow;
import android.widget.RelativeLayout;
import android.widget.TextView;
public class TestActivity extends Activity {
TextView textView1;
RelativeLayout window;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_test);
textView1 = (TextView) findViewById(R.id.textView1);
window = (RelativeLayout)findViewById(R.id.window);
textView1.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
initPopuptWindow(window);
}
});
}
PopupWindow popupWindow;
/**
* 建立PopupWindow
*/
protected void initPopuptWindow(View layout) {
// TODO Auto-generated method stub
//對當前頁面進行截圖
layout.setDrawingCacheEnabled(true);
layout.buildDrawingCache(); //啟用DrawingCache並建立點陣圖
Bitmap screen = Bitmap.createBitmap(layout.getDrawingCache()); //建立一個DrawingCache的拷貝，因為DrawingCache得到的點陣圖在禁用後會被回收
layout.setDrawingCacheEnabled(false); //禁用DrawingCahce否則會影響效能
//將截圖進行模糊
screen = Blur.fastblur(this, screen, 15);
// 獲取自定義佈局檔案activity_popupwindow_left.xml的檢視
final View popupWindow_view = getLayoutInflater().inflate(R.layout.ioswindow, null,
false);
// 建立PopupWindow例項,200,LayoutParams.MATCH_PARENT分別是寬度和高度
final ScrollableImageView background = (ScrollableImageView) popupWindow_view.findViewById(R.id.imageView1);
background.setoriginalImage(screen);
final int screenWidth = getScreenWidth(this);
final int screenHeight = screen.getHeight();
final int heightless = getScreenHeight(this)-screenHeight;
Log.i("Alex", "螢幕寬度為"+screenWidth+"高度為"+screenHeight+"偏差為"+heightless);
popupWindow = new PopupWindow(popupWindow_view, (int) (screenWidth*0.8), (int) (screenWidth*0.85*0.5), true); //設定popwindow的大小
popupWindow.showAtLocation(textView1, Gravity.CENTER, 0, 0);//設定popwindow的位置
popupWindow_view.post(new Runnable() {
@Override
public void run() {
// TODO Auto-generated method stub
int left = screenWidth/10;
Log.i("Alex", screenHeight+"-"+screenWidth*0.85*0.5);
int top = (int) ((screenHeight-screenWidth*0.85*0.5)/2-heightless/2);
Log.i("Alex", "top是"+top);
background.handleScroll(top, left);
}
});
// 設定動畫效果
// 點選其他地方消失
TextView confirm = (TextView) popupWindow_view.findViewById(R.id.textView2);
confirm.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
popupWindow.dismiss();
}
});
}
/**
* Get the screen width.
*
* @param context
* @return the screen width
*/
@SuppressWarnings("deprecation")
@SuppressLint("NewApi")
public static int getScreenWidth(Activity context) {
Display display = context.getWindowManager().getDefaultDisplay();
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB_MR2) {
Point size = new Point();
display.getSize(size);
return size.x;
}
return display.getWidth();
}
/**
* Get the screen height.
*
* @param context
* @return the screen height
*/
@SuppressWarnings("deprecation")
@SuppressLint("NewApi")
public static int getScreenHeight(Activity context) {
Display display = context.getWindowManager().getDefaultDisplay();
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB_MR2) {
Point size = new Point();
display.getSize(size);
return size.y;
}
return display.getHeight();
}
}
第二種樣式，比第一種簡單但是效果更明顯也更大眾化
這個是在原來佈局的最上層加上了一個不可見的imageView，在彈出popwindow之前用這個imageView蓋住底下的東西
佈局如下
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/window"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.npi.blureffect.DialogActivity" >
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/hello_world" />
<RatingBar
android:id="@+id/ratingBar1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/textView1"
android:layout_below="@+id/textView1"
android:layout_marginTop="124dp" />
<Switch
android:id="@+id/switch1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/ratingBar1"
android:layout_below="@+id/ratingBar1"
android:layout_marginLeft="24dp"
android:layout_marginTop="81dp"
android:text="Switch" />
<Button
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignRight="@+id/ratingBar1"
android:layout_below="@+id/ratingBar1"
android:text="Button" />
<Button
android:id="@+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBottom="@+id/ratingBar1"
android:layout_alignLeft="@+id/switch1"
android:layout_marginBottom="52dp"
android:text="Button" />
<TextView
android:id="@+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBottom="@+id/button1"
android:layout_alignLeft="@+id/ratingBar1"
android:text="Large Text"
android:textAppearance="?android:attr/textAppearanceLarge" />
<ProgressBar
android:id="@+id/progressBar1"
style="?android:attr/progressBarStyleHorizontal"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_marginBottom="49dp"
android:layout_toLeftOf="@+id/button1" />
<ProgressBar
android:id="@+id/progressBar2"
style="?android:attr/progressBarStyleLarge"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/switch1"
android:layout_toRightOf="@+id/switch1" />
<RadioButton
android:id="@+id/radioButton1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="@+id/progressBar1"
android:layout_alignLeft="@+id/switch1"
android:text="RadioButton" />
<Button
android:id="@+id/button3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/progressBar2"
android:layout_below="@+id/progressBar2"
android:text="Button" />
<ImageView
android:id="@+id/background"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#fff"
android:visibility="gone" />
</RelativeLayout>activity 如下
package com.npi.blureffect;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Matrix;
import android.graphics.Point;
import android.os.Build;
import android.os.Bundle;
import android.util.Log;
import android.view.Display;
import android.view.Gravity;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.ImageView;
import android.widget.PopupWindow;
import android.widget.RelativeLayout;
import android.widget.TextView;
public class DialogActivity extends Activity {
TextView textView1;
RelativeLayout window;
ImageView background;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_dialog);
textView1 = (TextView) findViewById(R.id.textView1);
window = (RelativeLayout)findViewById(R.id.window);
background = (ImageView) findViewById(R.id.background);
textView1.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
initPopuptWindow(window);
}
});
}
PopupWindow popupWindow;
/**
* 建立PopupWindow
*/
protected void initPopuptWindow(View layout) {
// TODO Auto-generated method stub
//對當前頁面進行截圖
layout.setDrawingCacheEnabled(true);
layout.buildDrawingCache(); //啟用DrawingCache並建立點陣圖
Bitmap screen = Bitmap.createBitmap(layout.getDrawingCache()); //建立一個DrawingCache的拷貝，因為DrawingCache得到的點陣圖在禁用後會被回收
layout.setDrawingCacheEnabled(false); //禁用DrawingCahce否則會影響效能
Log.i("Alex", "轉換前bitmap的大小是"+screen.getWidth()+" : "+screen.getHeight());
screen = scaleBitmap(screen, screen.getWidth()/2, screen.getHeight()/2);//壓縮bitmap到指定大小
Log.i("Alex", "轉換後bitmap的大小是"+screen.getWidth()+" : "+screen.getHeight());
//將截圖進行模糊
screen = Blur.fastblur(this, screen, 10);
// 獲取自定義佈局檔案activity_popupwindow_left.xml的檢視
final View popupWindow_view = getLayoutInflater().inflate(R.layout.ioswindow, null,
false);
// 建立PopupWindow例項,200,LayoutParams.MATCH_PARENT分別是寬度和高度
background.setImageBitmap(screen);
background.setVisibility(View.VISIBLE);
final int screenWidth = getScreenWidth(this);
popupWindow = new PopupWindow(popupWindow_view, (int) (screenWidth*0.8), (int) (screenWidth*0.85*0.5), true); //設定popwindow的大小
popupWindow.showAtLocation(textView1, Gravity.CENTER, 0, 0);//設定popwindow的位置
popupWindow_view.post(new Runnable() {
@Override
public void run() {
// TODO Auto-generated method stub
int left = screenWidth/10;
}
});
// 設定動畫效果
// 點選其他地方消失
TextView confirm = (TextView) popupWindow_view.findViewById(R.id.textView2);
confirm.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
background.setVisibility(View.GONE);
popupWindow.dismiss();
}
});
}
/**
* Get the screen width.
*
* @param context
* @return the screen width
*/
@SuppressWarnings("deprecation")
@SuppressLint("NewApi")
public static int getScreenWidth(Activity context) {
Display display = context.getWindowManager().getDefaultDisplay();
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB_MR2) {
Point size = new Point();
display.getSize(size);
return size.x;
}
return display.getWidth();
}
/**
* 把一個bitmap壓縮，壓縮到指定大小
* @param bm
* @param width
* @param height
* @return
*/
private static Bitmap scaleBitmap(Bitmap bm, float width, float height) {
if (bm == null) {
return null;
}
int bmWidth = bm.getWidth();
int bmHeight = bm.getHeight();
float scaleWidth = width / bmWidth;
float scaleHeight = height / bmHeight;
Matrix matrix = new Matrix();
matrix.postScale(scaleWidth, scaleHeight);
if (scaleWidth == 1 && scaleHeight == 1) {
return bm;
} else {
Bitmap resizeBitmap = Bitmap.createBitmap(bm, 0, 0, bmWidth,
bmHeight, matrix, false);
bm.recycle();//回收圖片記憶體
bm.setDensity(240);
return resizeBitmap;
}
}
}