为了在所有设备上的确切位置定位按钮,我使用自定义视图创建了它。该按钮占据了屏幕的一小部分,但实际视图占据了大部分屏幕。按钮周围的所有区域都是透明的。如何让用户点击透明区域到下面的按钮,但仍然点击视图上的按钮区域?
以下是相关代码:
public class MainActivity extends AppCompatActivity {
final float dotScale = 0.3f;
Dot dot1, dot2;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
RelativeLayout myLayout = (RelativeLayout) findViewById(R.id.mainView);
MyView myView = new MyView(this);
myLayout.addView(myView);
// Two dots are created.
dot1 = new Dot(this);
dot1.xOffset = 2.9f;
dot1.yOffset = 3.3f;
myLayout.addView(dot1);
dot2 = new Dot(this);
dot2.xOffset = -2.4f;
dot2.yOffset = 1.1f;
myLayout.addView(dot2);
// Makes dots clickable
dot1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if (!dot1.isClicked) {
dot1.animate().setDuration(300).setInterpolator(new AnticipateInterpolator())
.scaleXBy(dotScale).scaleYBy(dotScale).alpha(1.0f);
dot1.isClicked = true;
}
}
});
dot2.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if (!dot2.isClicked) {
dot2.animate().setDuration(300).setInterpolator(new AnticipateInterpolator())
.scaleXBy(dotScale).scaleYBy(dotScale).alpha(1.0f);
dot2.isClicked = true;
}
}
});
}
.......
//custom view for Dots
class Dot extends View {
int radius;
float xOffset;
float yOffset;
boolean isClicked = false;
public Dot(Context context) {
super(context);
setClickable(true);
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
int x = getWidth();
int y = getHeight();
double ratio = (547d / 828d);
float circleX = (float)((x / 2) - (y * ratio) / xOffset);
float circleY = (float)(y / yOffset);
radius = (int)((float)y/13);
setPivotX(circleX);
setPivotY(circleY);
Paint paint = new Paint();
paint.setColor(Color.RED);
canvas.drawCircle(circleX, circleY, radius, paint);
}
}
答案 0 :(得分:0)
您应该设置视图clickable
并且不要覆盖onTouch
或只是从中返回false
。返回false
表示您没有使用事件,它将被转发到视图层次结构中的下一个元素。