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我必须得到一个布局的位图(如第二个屏幕)之前(可以说没有)将它带到前台屏幕。我参考了this的帖子。我在夸大视野的某处犯了错误。 注:创建屏幕外布局的位图
1. Must not show the inflated screen (second screen)
2. Must not attach it to the parent view
我的代码片段是在这里:
private Bitmap renderNextScreen() {
// Getting width, height device
Display display = ((WindowManager)getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay();
int width = display.getWidth();
int height = display.getHeight();
Log.i(TAG, "Width- " + width+" Height - "+height);
// Create a mutable bitmap
Bitmap secondScreen = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
// Created a canvas using the bitmap
Canvas c = new Canvas(secondScreen);
// Inflated the second screen
LayoutInflater inflater = LayoutInflater.from(this);
View secondView = inflater.inflate(R.layout.secondscreen, null);
Log.i(TAG, "secondView.Height- "+secondView.getHeight()+" , secondView.Width " + secondView.getWidth());
// Drawn the inflated view to canvas
secondView.draw(c);
preview.setImageBitmap(secondPage); // preview is the Imageview inside first screen
return secondScreen;
}
我的身高日志,宽度:
01-28 02:12:35.926: I/FirstActivity(21831): Width- 480 Height - 800
01-28 02:30:08.287: I/FirstActivity(22207): secondView.Height- 0 , secondView.Width 0
我的预览总是空白。谢谢。
你可以问我澄清:)我认为我在做错误的充气视图.... – 2012-01-30 09:59:27
你试过调试宽度和高度?如果我没记错,这两个变量等于0时,这种方式检索... – Sephy 2012-01-30 10:00:22
@Sephy你是对的其实我打印位图的高度和宽度。高度和secondView的宽度是0,0。但如果我提到视图组在扩大视图它会出现在屏幕上...我如何获得我的要求的位图... – 2012-01-30 10:28:16