CN103699317A - Image display method by rapidly rotating screens on Android devices - Google Patents

Abstract

The invention discloses an image display method by rapidly rotating screens on Android devices. The image display method includes the following steps: compositing image data as required by display of a current screen, storing the image data in a first data cache area, and completing display of the image data of the current screen; starting timing, after time is out, acquiring image data as required by 90-degree or 270-degree clockwise rotation of the current screen to perform background composition, copying the composited image data in a second data cache area, and starting timing again; during timing, if the current screen rotates clockwise by 90 degrees or 270 degrees, reading the data in the second data cache area to complete display of the image data, and if the current screen rotates clockwise by 180 degrees, reading the data in the first cache area to complete display of the image data. By the image display method, image display speed during rotation of screens of the Android devices is increased.

Description

The method for displaying image of fast rotational screen on a kind of Android equipment

Technical field

The present invention relates to Android system and show control field, relate in particular to the method for displaying image of fast rotational screen on a kind of Android equipment.

Background technology

User, in operation Android equipment, often can carry out the rotary manipulation of screen, to adapt to different use scenes.But existing Android equipment is when carrying out screen rotation, the phenomenon that usually there will be delay, card to pause, user experiences very poor.

Summary of the invention

The technical problem to be solved in the present invention, is to provide the method for displaying image of fast rotational screen on a kind of Android equipment, the problem that while solving existing Android device screen rotation, screen display card pauses and postpones.

The present invention is achieved in that

On Android equipment, a method for displaying image for fast rotational screen, comprises the steps:

Synthetic current screen shows required view data, deposits the first data buffer, and the data that read the first data buffer complete the demonstration of the view data of current screen;

Start timing, after described timing is overtime, obtain that current screen dextrorotation turn 90 degrees or the required view data of 270 degree to carry out backstage synthetic, copy the view data after synthetic to second data buffer, and restart described timing;

In timing, if screen orientation dextrorotation on the basis of existing screen turn 90 degrees or 270 degree, the data that read the second data buffer complete the demonstration of view data;

In timing, if screen orientation dextrorotation turnback on the basis of existing screen, the data that read the first data buffer complete the demonstration of view data.

Further, described timing is the generated time of frame data.

And the Android equipment that the present invention also provides a kind of image of fast rotational screen to show based on the above method, comprise the synthetic cache module of view data and rotational display module;

The synthetic cache module of described view data shows required view data for the synthesis of current screen, deposits the first data buffer, and the data that read the first data buffer complete the demonstration of the view data of current screen; And for starting timing, after described timing is overtime, obtain that current screen dextrorotation turn 90 degrees or the required view data of 270 degree to carry out backstage synthetic, copy the view data after synthetic to second data buffer, and restart described timing;

Described rotational display module is in timing, if screen orientation dextrorotation on the basis of existing screen turn 90 degrees or 270 degree, the data that read the second data buffer complete the demonstration of view data; And in timing, if screen orientation dextrorotation turnback on the basis of existing screen, the data that read the first data buffer complete the demonstration of view data.

Further, described timing is the generated time of frame data.

Tool of the present invention has the following advantages: image displaying time while shortening rotation, improves user and experiences.

Embodiment

On Android equipment, a method for displaying image for fast rotational screen, comprises the steps:

Synthetic current screen shows required view data, deposits the first data buffer, and the data that read the first data buffer complete the demonstration of the view data of current screen;

Start timing, after described timing is overtime, obtain that current screen dextrorotation turn 90 degrees or the required view data of 270 degree to carry out backstage synthetic, copy the view data after synthetic to second data buffer, and restart described timing;

In timing, if screen orientation dextrorotation on the basis of existing screen turn 90 degrees or 270 degree, the data that read the second data buffer complete the demonstration of view data;

In timing, if screen orientation dextrorotation turnback on the basis of existing screen, the data that read the first data buffer complete the demonstration of view data.

Further, timing can be the integral multiple of the generated time of frame data, the more burdens that can increase processor of multiple, but display effect relatively can be poor, is preferably the generated time of frame data.

The present invention can select 90 degree or 270 degree when synthetic on backstage, difference is only to show when data read to be address or low to high address from high to low, with 90-degree rotation, be elaborated below, those skilled in the art can know the implementation method of rotation 270 degree on the basis of following explanation.

The direction of the existing judgement screen rotation of Android equipment is by gravity sensor, and the rotation of common screen is mainly the rotation towards user on perpendicular.When Android equipment in use, Android equipment will carry out the demonstration of current screen, be specially the direction that Android equipment obtains current screen, synthesize current screen and show required view data, and deliver to the first data buffer of the demonstration use of internal memory, then the display controller of Android equipment calls DMA, by the data of the first data buffer according to the mode of rank scanning, order from low address to high address, increases progressively copies data successively, completes the demonstration of current screen.

Then start a timing, after timing is overtime, obtains current screen dextrorotation and turn 90 degrees required view data to carry out backstage synthetic, copy the view data after synthetic to second data buffer, and restart described timing.The timing that circulates, every timing then, is about to synthetic having deposited of the required data of 90 degree, is convenient to Android equipment and directly calls when 90-degree rotation or 270 is spent.

In timing, if screen orientation dextrorotation on the basis of existing screen turn 90 degrees, display controller uses the mode of rank scanning from the low address of the second data buffer to high address, increases progressively successively copy image data, completes the demonstration of the view data of 90 degree.

In timing, 270 degree if screen orientation turns clockwise on the basis of existing screen, display controller uses the mode of rank scanning from the high address of the second data buffer to low address, and the copy image of successively decreasing successively data, complete the demonstration of the view data of 270 degree.

In timing, if screen orientation is dextrorotation turnback on the basis of existing screen, display controller uses the mode of rank scanning from the first data buffer high address to low address, and the copy image of successively decreasing successively data, complete the demonstration of 180 degree view data.

Especially, if user's multiple rotary in a timing, because the data of the first data buffer and the second data buffer do not change, it is very smooth that the demonstration of multiple rotary now will seem.

In sum, the present invention, by showing that in advance data are synthetic and prestoring, when Android device screen rotates, only need directly call and can show at once, the time of screen display while having shortened equipment rotation.

Although more than described the specific embodiment of the present invention; but being familiar with those skilled in the art is to be understood that; our described specific embodiment is illustrative; rather than for the restriction to scope of the present invention; those of ordinary skill in the art are in equivalent modification and the variation done according to spirit of the present invention, all should be encompassed in the scope that claim of the present invention protects.

Claims (4)

1. a method for displaying image for fast rotational screen on Android equipment, is characterized in that: comprise the steps:

Synthetic current screen shows required view data, deposits the first data buffer, and the data that read the first data buffer complete the demonstration of the view data of current screen;

Start timing, after described timing is overtime, obtain that current screen dextrorotation turn 90 degrees or the required view data of 270 degree to carry out backstage synthetic, copy the view data after synthetic to second data buffer, and restart described timing;

In timing, if screen orientation dextrorotation on the basis of existing screen turn 90 degrees or 270 degree, the data that read the second data buffer complete the demonstration of view data;

In timing, if screen orientation dextrorotation turnback on the basis of existing screen, the data that read the first data buffer complete the demonstration of view data.

2. the method for displaying image of fast rotational screen on a kind of Android equipment according to claim 1, is characterized in that: described timing is the generated time of frame data.

3. the Android equipment that the image of fast rotational screen shows, is characterized in that: comprise the synthetic cache module of view data and rotational display module;

The synthetic cache module of described view data shows required view data for the synthesis of current screen, deposits the first data buffer, and the data that read the first data buffer complete the demonstration of the view data of current screen; And for starting timing, after described timing is overtime, obtain that current screen dextrorotation turn 90 degrees or the required view data of 270 degree to carry out backstage synthetic, copy the view data after synthetic to second data buffer, and restart described timing;

Described rotational display module is in timing, if screen orientation dextrorotation on the basis of existing screen turn 90 degrees or 270 degree, the data that read the second data buffer complete the demonstration of view data; And in timing, if screen orientation dextrorotation turnback on the basis of existing screen, the data that read the first data buffer complete the demonstration of view data.

4. the Android equipment that the image of a kind of fast rotational screen according to claim 3 shows, is characterized in that: described timing is the generated time of frame data.