api development training

(Mmvpmatrixhandle,1,false, Mvpmatrix,0);//Draw the triangleGles20.gldrawarrays (Gles20.gl_triangles,0, Vertexcount);//Disable vertex arrayGles20.gldisablevertexattribarray (Mpositionhandle);}If there is a correct calculation and the correct use of the integrated matrix, then the graph will be drawn in the correct proportions, the final look should be the effect of such a child:Now the program can normally display the normal proportion of the graph, it is time for the graphics to add action. And

);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: Android Official

; Bitmapfactory.decoderesource (res, resId, options);//Calculate insamplesizeOptions.insamplesize = calculateinsamplesize (options, Reqwidth, reqheight);//Decode bitmap with Insamplesize setOptions.injustdecodebounds =false;returnBitmapfactory.decoderesource (res, resId, options);}This method can easily load any large size bitmap to ImageView, this imageview shows a 100*100 pixel thumbnail, as shown in the following code:mImageView.setImageBitmap( 100100));You can follow a similar process to

) { mHeadlineSelectedListener.onHeadlineSelected(position); } } ...}Handling Screen configuration changesIf you use a separate activity to implement a separate part of the UI, remember to respond to certain configuration changes, such as screen rotation, to maintain UI consistency.For example, a 7-inch tablet that runs an Android 3.0 system, the news reader app uses the content of separate activity display articles in vertical mode, but uses multi-panel mode in horizontal

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.

the notification opens a new ("special") activity, there‘s// no need to create an artificial back stack.PendingIntent resultPendingIntent = PendingIntent.getActivity( this, 0, resultIntent, PendingIntent.FLAG_UPDATE_CURRENT);Set the click behavior of NotificationsIn order for the pendingintent to be associated with a gesture, the corresponding method of Notificationcompat.builder is called. For example, to start an activity, call the Setcontentintent () method to add Pendinginten

(info.groupformed) {//The other device acts as the client. In the case, //You'll want to create a client thread this connects to the group //owner.} }The Now returns to the OnReceive () method of the broadcast receiver, modifying the portion of the listening wifi\_p2p\_connection\_changed\_action, and invoking the Requestconnectioninfo () method when the intent is received. This is an asynchronous method, so the result is returned by the parameter: Connection informatio

second parameter is ignored, and the third parameter determines whether the progress bar is an indeterminate progress bar. The final display has the same display style as the regular progress bar, except that it has been moving.Publish the notification before the action starts, and the progress animation will continue to run until you modify the notification. When the operation is complete, call the setprogress (0, 0, False) method and update the notification to remove the activity indicator. O

October National Free Mobile development training:Since its launch, AppCan3.2.1 has had a new improvement in its functionality and experience compared to the previous version, and is loved by developers. Today, a growing number of third-party development platforms and services are the tools that developers need to use to develop their applications. Appcan, as an advocate and leader of domestic hybrid hybrid

) object that has a position (position), rotaion (rotation), scale (scaling) three properties.Figure 1-8Camera ObjectFigure 1-9Coordinate right-click to select the direction of vision, learn to look at the coordinate system.Figure 1-103D development inside, it is very important to recognize the coordinate system, many students at the beginning, did not recognize the coordinate system, to the back of the developmen