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我正在开发android中的自定义视图。我想在视图中显示路径。所有的观点都是这样硬编码的。在android中的自定义视图在每个设备上看起来不同
private void loadData(){
float density = getResources().getDisplayMetrics().density;
testPath = new Path();
testPath.moveTo(new Point((int) (242*density), (int) (213*density)));
testPath.lineTo(new Point((int) (214*density), (int) (209*density)));
testPath.lineTo(new Point((int) (131*density), (int) (243*density)));
testPath.lineTo(new Point((int) (96*density), (int) (314*density)));
testPath.lineTo(new Point((int) (117*density), (int) (403*density)));
testPath.lineTo(new Point((int) (194*density), (int) (457*density)));
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);{
canvas.drawLine(0,200,canvas.getWidth(),200,drawPaint);
canvas.drawLine(0,canvas.getHeight()/2,canvas.getWidth(),canvas.getHeight()/2,drawPaint);
canvas.drawLine(canvas.getWidth()/2,0,canvas.getWidth()/2,canvas.getHeight(),drawPaint);
canvas.drawPath(testPath, drawPaint);
}
但在xxhdpi屏幕下方是基线(中线)。而在mpdpi中则高于基线。如果我不将点与denisty像素相乘,那么xxhdpidevices中的路径太小。 这里是mdpi设备映像。 这里是xxhdpi设备
您的onDraw并不需要我n是否考虑屏幕的密度 – Blackbelt
那么如何让各种设备的屏幕相等?我尝试用密度像素乘以点,但它不适合 –