Question

我创建了一个时钟，它将在UI上显示当前时间我想通过0到1的图片显示数字为此我将图像从0到9一个在另一个上进行堆叠，然后根据我想要显示的数字改变图像的透明度

@Override
protected void onCreate(Bundle savedInstanceState) {
setContentView(R.layout.activity_main);
super.onCreate(savedInstanceState);
i0.setAlpha(1);
i1.setAlpha(1);
i2.setAlpha(1);
i3.setAlpha(1);
i4.setAlpha(1);
i5.setAlpha(1);
i6.setAlpha(1);
i7.setAlpha(1);
i8.setAlpha(1);
i9.setAlpha(1);
Timer Tim=new Timer();
Tim.schedule(new TimerTask() 
{   @Override
    public void run() 
    {    runThread();   }
},1000,1000);

}


private void runThread()
{   runOnUiThread (new Thread(new Runnable() 
    {   public void run() 
        {   

        if(x==0){
            i0.setAlpha(1000);
            i1.setAlpha(1);
            i2.setAlpha(1);
            i3.setAlpha(1);
            i4.setAlpha(1);
            i5.setAlpha(1);
            i6.setAlpha(1);
            i7.setAlpha(1);
            i8.setAlpha(1);
            i9.setAlpha(1);}

        if(x==1){
            i0.setAlpha(1);
            i1.setAlpha(1000);
            i2.setAlpha(1);
            i3.setAlpha(1);
            i4.setAlpha(1);
            i5.setAlpha(1);
            i6.setAlpha(1);
            i7.setAlpha(1);
            i8.setAlpha(1);
            i9.setAlpha(1);}

        if(x==2){
            i0.setAlpha(1);
            i1.setAlpha(1);
            i2.setAlpha(1000);
            i3.setAlpha(1);
            i4.setAlpha(1);
            i5.setAlpha(1);
            i6.setAlpha(1);
            i7.setAlpha(1);
            i8.setAlpha(1);
            i9.setAlpha(1);}

        if(x==3){
            i0.setAlpha(1);
            i1.setAlpha(1);
            i2.setAlpha(1);
            i3.setAlpha(1000);
            i4.setAlpha(1);
            i5.setAlpha(1);
            i6.setAlpha(1);
            i7.setAlpha(1);
            i8.setAlpha(1);
            i9.setAlpha(1);}

        if(x==4){
            i0.setAlpha(1);
            i1.setAlpha(1);
            i2.setAlpha(1);
            i3.setAlpha(1);
            i4.setAlpha(1000);
            i5.setAlpha(1);
            i6.setAlpha(1);
            i7.setAlpha(1);
            i8.setAlpha(1);
            i9.setAlpha(1);}

        if(x==5){
            i0.setAlpha(1);
            i1.setAlpha(1);
            i2.setAlpha(1);
            i3.setAlpha(1);
            i4.setAlpha(1);
            i5.setAlpha(1000);
            i6.setAlpha(1);
            i7.setAlpha(1);
            i8.setAlpha(1);
            i9.setAlpha(1);}

        if(x==6){
            i0.setAlpha(1);
            i1.setAlpha(1);
            i2.setAlpha(1);
            i3.setAlpha(1);
            i4.setAlpha(1);
            i5.setAlpha(1);
            i6.setAlpha(1000);
            i7.setAlpha(1);
            i8.setAlpha(1);
            i9.setAlpha(1);}

        if(x==7){
            i0.setAlpha(1);
            i1.setAlpha(1);
            i2.setAlpha(1);
            i3.setAlpha(1);
            i4.setAlpha(1);
            i5.setAlpha(1);
            i6.setAlpha(1);
            i7.setAlpha(1000);
            i8.setAlpha(1);
            i9.setAlpha(1);}

        if(x==8){
            i0.setAlpha(1);
            i1.setAlpha(1);
            i2.setAlpha(1);
            i3.setAlpha(1);
            i4.setAlpha(1);
            i5.setAlpha(1);
            i6.setAlpha(1);
            i7.setAlpha(1);
            i8.setAlpha(1000);
            i9.setAlpha(1);}

        if(x==9){
            i0.setAlpha(1);
            i1.setAlpha(1);
            i2.setAlpha(1);
            i3.setAlpha(1);
            i4.setAlpha(1);
            i5.setAlpha(1);
            i6.setAlpha(1);
            i7.setAlpha(1);
            i8.setAlpha(1);
            i9.setAlpha(1000);}

        x=x+1;
        if (x==10){x=0;}
        }
    }));
}

}

我想要显示的每个数字都不能拍摄10张图像可以任何1建议任何其他方式来做到这一点。是否有可能通过“观察”..？任何人都可以告诉我如何在android中使用视图..？

Answer 1

我认为如果使用字体而不是所有图像，这可能会更容易。我确定你可以通过使用TextView来实现相同的效果，你将时间放入其中然后改变背景。

有关如何使用资产文件夹中的字体

，请参阅http://www.youtube.com/watch?v=kOJGmVXuuFA

编辑（新答案）：在时钟的xml布局中创建ImageButtons，具体取决于您的时钟有多少位数。

    int[] x = {....} \\the digits you wish to display
    int[] images = { R.drawable.0, R.drawable.1,...,R.drawable.9); //the saves of your images 0-9
    int[] btnArray = { R.id.b1, R.id.b2,...}; //the ImageButtons used to display your digits
    for(int i = 0; i < numberofbuttons; i++) {
        ImageButton btn = (ImageButton) findViewById(btnArray[i-1]);
        btn.setBackgroundDrawable(getResources().getDrawable(
                images[x[i]])); 
    }

使用视图来显示数字图像

1 个答案: