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Step by step _ Android development course [33] _ AlarmManager (Global timer) and androidalarmmanager on the user interface Focus on technology, enjoy life! -- QQ: 804212028. Link: http://blog.csdn.net/y18334702058/article/details/44624305 Topic: AlarmManager (Global timer) on the user interface)- Role of AlarmManager: When the AlarmManager object is used

);Matrix.setrotatem (Mrotationmatrix,0, MAngle,0,0, -1.0f);//Combine the rotation matrix with the projection and camera view //Note that the Mmvpmatrix factor *must is first* in order //For the matrix multiplication product to be correct.Matrix.multiplymm (Scratch,0, Mmvpmatrix,0, Mrotationmatrix,0);//Draw triangleMtriangle.draw (scratch);}If you have completed the steps described above, start the program and then drag on the screen to rotate the triangle:

lines and curves to the Path object, and then draw the shapes with the DrawPath () method. Just these base shapes can define their path style through the SetStyle () method. You can define a gradient fill pattern by creating a LinearGradient object. Call the Setshader () method to populate the shape. Draws a bitmap by using the Drawbitmap () method. For example, the following code is used to draw a piechart. It mixes text, lines, and shapes.protected void OnDraw(Canvas canvas) {Sup

= =; activity ; ... 2. Build and launch notifications A. Create a intent to start the activity. B. Set the ACTIVITY to start a new, empty task stack by calling the SetFlags () method and setting the Flag_activity_new_task and Flag_activity_clear_task flags. C. Set the options you need for intent. D. Create a pendingintent from intent by calling Getactivity (). You can use this pendingintent as a parameter to the Setcontentintent () method.

object.The following example uses the fragment that references LRUCache and passes the issue of configuration changes:PrivateLrucache@Overrideprotected void onCreate(Bundle savedinstancestate) { ... Retainfragment retainfragment = retainfragment.findorcreateretainfragment (Getfragmentmanager ()); Mmemorycache = Retainfragment.mretainedcache;if(Mmemorycache = =NULL) {Mmemorycache =NewLrucache//Initialize cache here as usual} Retainfragment.mretainedcache = Mmemorycache; } ...} Class

Course 09 dialog box prompts and toast usage --- [Whistling Android development video tutorial], toastandroidDialog Box and toast usage of information prompts in Android 9th (Because of the video software compression decoder problem after the system is reinstalled, this lesson is not clear during Youku upload, so you

); Paint.settextsize ( $); Canvas.drawtext ("Test Title", LeftMargin, Titlebaseline, paint); Paint.settextsize ( One); Canvas.drawtext ("Test paragraph", LeftMargin, Titlebaseline + -, paint); Paint.setcolor (Color.Blue); Canvas.drawrect ( -, -,172,172, paint);}When you use canvas to draw a PDF page, the element is assigned a position by some point, which is one of the 72 points in inches. Be sure to use this unit of measure to indicate the dimensions of the element. For the positioning of th

(); } }}Note the Getresponsecode () method returns the status code of the connection. This status code can be used to obtain additional information about the connection. A status code of 200 indicates a successful connection.Convert a byte stream to a stringThe inputstream reads the byte data. Once the InputStream object is acquired, it is often necessary to decode it or convert it into other types of data. For example, if you download a picture, the byte stream code should be a picture:nul

Original address: http://android.xsoftlab.net/training/graphics/opengl/draw.htmlIf you don't know how to define graphics and coordinate systems, please visit: Android Official Development document Training Series Course Chinese version: Graphic definition of OpenGL drawing.After defining the graphic, all you need to do next is draw it to the screen. However, usin

" android:layout_height="wrap_content" android:hint="@string/search_hint" android:inputType="text" android:imeOptions="actionSend" />Next, you can listen to the down event of the function button via Textview.oneditoractionlistener and need to respond to the correct IME function ID within the listener, which is defined with the editorinfo, such as the following using Ime_action _send:EditText editText = (EditText) findViewById(R.id.search);editText.setOnEditorActionListener(new OnEdit

/ awesomeimage.png drawable-hdpi/ awesomeimage.png drawable-mdpi/ awesomeimage.png drawable-ldpi/ awesomeimage.pngNext, when referencing @drawable/awesomeimage at any time, the system selects the appropriate bitmap image based on the DPI of the screen.Finally, put the boot icon into the mipmap/folder:res/... mipmap-ldpi/... finished_launcher_asset.png mipmap-mdpi/... finished_launcher_asset.png mipmap-hdpi/... finished_launcher_a

Intentservice.Declaring Intentservice in the manifest fileThe intentservice also needs to be defined in the manifest file. It is defined in the same way as the normal service.application android:icon= "@drawable/icon" android:label="@st Ring/app_name ">...- service android:name=". Rsspullservice " android:exported=" false "/>...application/>Where the Android:name property describes the class name of Intentservice.Note here: The service tag does not contain the intent Filter. Because other compo

= new DownloadStateReceiver(); // Registers the DownloadStateReceiver and its intent filters LocalBroadcastManager.getInstance(this).registerReceiver( mDownloadStateReceiver, mStatusIntentFilter); ...Broadcastreceiver can handle multiple types of intent objects at the same time, and this feature can define different code for each action, without having to define the Broadcastreceiver specifically. To define an additional intentfi

Android course Summary (III): android Course 1. proguard obfuscation: Do not confuse activities or other functions; otherwise, the system will not be able to find the lifecycle function; the JSON string should consider whether the field name will be affected after obfuscation; the native method will not be confused; ot