调用系统的传媒音量控制显示...- 在view左下角原点处绘制Button ...- Bookmark的取得

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▪调用系统的传媒音量控制显示调用系统的媒体音量控制显示调大声：1 AudioManager audioMa=(AudioManager)this.getSystemService(Context.AUDIO_SERVICE);2 audioMa.adjustStreamVolume(AudioManager.STREAM_MUSIC,AudioManager.ADJUST_RAISE,AudioManager.FX_FOCUS_NAVIGATION_UP).........

▪ 在view左下角原点处绘制Button 在view左上角原点处绘制Button 载:http://nachbaur.com/blog/building-a-custom-dashboard-uibutton As part of the Parking Mobility iPhone app I’ve been building, I wanted to integrate a simple “Quick Start” help guide to show people how t.........

▪ Bookmark的取得 Bookmark的获得 setContentView(R.layout.main); TextView tv = (TextView) findViewById(R.id.hello); String[] projection = new String[] { Browser.BookmarkColumns.TITLE, Browser.BookmarkColumns.URL }; Cursor mCur = managedQuery(android.........

[1]调用系统的传媒音量控制显示

来源: 互联网发布时间: 2014-02-18

调用系统的媒体音量控制显示

调大声：

1 AudioManager audioMa=(AudioManager)this.getSystemService(Context.AUDIO_SERVICE);
2 audioMa.adjustStreamVolume(AudioManager.STREAM_MUSIC,AudioManager.ADJUST_RAISE,
AudioManager.FX_FOCUS_NAVIGATION_UP);

调小声：

1 AudioManager audioMa=(AudioManager)this.getSystemService(Context.AUDIO_SERVICE);
2 audioMa.adjustStreamVolume(AudioManager.STREAM_MUSIC,AudioManager.ADJUST_LOWER,
AudioManager.FX_FOCUS_NAVIGATION_UP);

[2] 在view左下角原点处绘制Button

来源: 互联网发布时间: 2014-02-18

在view左上角原点处绘制Button

载:http://nachbaur.com/blog/building-a-custom-dashboard-uibutton

As part of the Parking Mobility iPhone app I’ve been building, I wanted to integrate a simple “Quick Start” help guide to show people how to use the app without being intrusive. I wanted to use the project’s branding as much as possible, and give the user a feeling like they haven’t left the main portion of the app. So I wanted the user to be comfortable with it, and always have a quick way to close the help window to get back to the app.

The end result is actually really simple. I subclassed the UIButton class, and overrode the drawRect: method to use some native drawing primitives.

//
//  DNCloseButton.h
//  ParkingMobility
//
//  Created by Michael Nachbaur on 10-08-22.
//  Copyright 2010 Decaf Ninja Software. All rights reserved.
//

#import 
#import 

@interface DNCloseButton : UIButton {
}

@end


//

//  DNCloseButton.m
//  ParkingMobility
//
//  Created by Michael Nachbaur on 10-08-22.
//  Copyright 2010 Decaf Ninja Software. All rights reserved.
//

#import &quot;DNCloseButton.h&quot;

@implementation DNCloseButton

- (id)initWithFrame:(CGRect)frame {
    if ((self = [super initWithFrame:frame])) {
CGFloat radius = self.bounds.size.width / 2;
CGFloat borderWidth = self.bounds.size.width / 10;

self.layer.backgroundColor = [[UIColor blackColor] CGColor];
self.layer.borderColor = [[UIColor whiteColor] CGColor];
self.layer.borderWidth = borderWidth;
self.layer.cornerRadius = radius;

if ([self.layer respondsToSelector:@selector(setShadowOffset:)])
self.layer.shadowOffset = CGSizeMake(0.25, 0.25);

if ([self.layer respondsToSelector:@selector(setShadowColor:)])
self.layer.shadowColor = [[UIColor blackColor] CGColor];

if ([self.layer respondsToSelector:@selector(setShadowRadius:)])
self.layer.shadowRadius = borderWidth;

if ([self.layer respondsToSelector:@selector(setShadowOpacity:)])
self.layer.shadowOpacity = 0.75;

[self setNeedsDisplay];
    }
    return self;
}

- (void)drawRect:(CGRect)rect {
CGContextRef ctx = UIGraphicsGetCurrentContext();
CGContextSetShouldAntialias(ctx, true);

CGFloat xsize = self.bounds.size.width / 6;
CGFloat borderWidth = self.bounds.size.width / 10;

CGContextSaveGState(ctx);

CGContextSetLineCap(ctx, kCGLineCapRound);
CGContextSetLineWidth(ctx, borderWidth);
CGContextSetStrokeColorWithColor(ctx, [[UIColor whiteColor] CGColor]);

CGFloat width = self.bounds.size.width;
CGPoint start1 = CGPointMake(width / 2 - xsize, width / 2 - xsize);
CGPoint end1 = CGPointMake(width / 2 + xsize, width / 2 + xsize);
CGPoint start2 = CGPointMake(width / 2 + xsize, width / 2 - xsize);
CGPoint end2 = CGPointMake(width / 2 - xsize, width / 2 + xsize);

CGContextBeginPath(ctx);
CGContextMoveToPoint(ctx, start1.x, start1.y);
CGContextAddLineToPoint(ctx, end1.x, end1.y);
CGContextStrokePath(ctx);

CGContextBeginPath(ctx);
CGContextMoveToPoint(ctx, start2.x, start2.y);
CGContextAddLineToPoint(ctx, end2.x, end2.y);
CGContextStrokePath(ctx);

CGContextRestoreGState(ctx);
}

@end

Reading through the source code, you can see how I split the drawing between two different routines. First, my layer drawing which draws the border, the circle, shadows, etc is handled using raw CALayer drawing. The second block, inside drawRect:, draws the lines forming the “X” inside.

CGFloat closeSize = 26.0;
CGRect butframe = CGRectMake(0.0, 0.0, closeSize, closeSize);
butframe.origin.x = contentView.frame.origin.x - closeSize / 2;
butframe.origin.y = contentView.frame.origin.y - closeSize / 2;

DNCloseButton *button = [[[DNCloseButton alloc] initWithFrame:butframe] autorelease];
[button addTarget:self action:@selector(closePopup:) forControlEvents:UIControlEventTouchUpInside];

[self.view addSubview:button];

If you find any bugs in this code, please let me know and I’ll update this post. I hope this works out as well for you as it has for me.

[3] Bookmark的取得

来源: 互联网发布时间: 2014-02-18

Bookmark的获得

setContentView(R.layout.main);
  TextView tv = (TextView) findViewById(R.id.hello);
  String[] projection = new String[] { Browser.BookmarkColumns.TITLE,
    Browser.BookmarkColumns.URL };
  Cursor mCur = managedQuery(android.provider.Browser.BOOKMARKS_URI,
    projection, null, null, null);
  mCur.moveToFirst();
  int titleIdx = mCur.getColumnIndex(Browser.BookmarkColumns.TITLE);
  int urlIdx = mCur.getColumnIndex(Browser.BookmarkColumns.URL);
  while (mCur.isAfterLast() == false) {
   tv.append("\n" + mCur.getString(titleIdx));
   tv.append("\n" + mCur.getString(urlIdx));
   mCur.moveToNext();
  }

<uses-permission android:name="com.android.browser.permission.READ_HISTORY_BOOKMARKS" />