我有活动的文本视图,看起来像这样:1/9(holecounter/holenm(。我有2个图像视图来操纵Holecounter(添加或减少数字(,在ImageView中,箭头左图表示还原,箭头右表示添加数字。现在,当我的holecounter == holenm(9/9(时,此箭头应变成另一个图像。
注意:这些箭头图像是在该活动中创建的XML文件,例如:
android:background="@drawable/ic_arrow_left"
android:background="@drawable/ic_arrow_right"
我现在拥有的:
private void setButtons() {
mBackArrow = findViewById(R.id.previous);
mForwardArrow = findViewById(R.id.next);
mBackArrow.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if (holeCounter > 1) {
Intent intent = getIntent();
mHoleNm = findViewById(R.id.gameHoleNumber);
holeCounter--;
mHoleNm.setText(holeCounter + "/" + intent.getStringExtra("HOLESNM"));
}
}
});
mForwardArrow.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent intent = getIntent();
int holesNm = Integer.parseInt(intent.getStringExtra("HOLESNM"));
if (holeCounter == (holesNm - 1)) {
mForwardArrow.setImageResource(R.drawable.ic_finish);
}
if (holeCounter < holesNm) {
mHoleNm = findViewById(R.id.gameHoleNumber);
holeCounter++;
mHoleNm.setText(holeCounter + "/" + intent.getStringExtra("HOLESNM"));
}
}
});
}
现在,它在该箭头的顶部添加了新的可绘制的绘制,但是我希望该箭头在该新图像下消失。此外,如果用户单击左箭头,现在单击holecounter!= holenm,其他映像应该回到箭头右图像。
您必须使用android:src
而不是android:background
。替换下面的代码
android:background="@drawable/ic_arrow_left"
android:background="@drawable/ic_arrow_right"
to
android:src="@drawable/ic_arrow_left"
android:src="@drawable/ic_arrow_right"