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我一直在面对我编码的自定义视图的问题。基本上，我有一个自定义的视图，处理不同部分的座位，不同的状态。我设法编写它，并且它工作正常。
由于该应用程序有点慢，我决定裁剪图像：而不是采用透明的整个屏幕，它只需要一部分屏幕（我没有做图形）。自定义视图搞乱布局
但由于我裁剪了图像，它们是messing up my layout。我不知道为什么，因为当我用ImageView替换我的自定义视图时，它完全适合！
它看起来像我的看法是忽略“wrap_content”，并超过它所需要的。将该值设置为“match_parent”也不起作用。
我试图再次裁剪我的图片，我以为这是因为它的大小，但事实并非如此。我试图覆盖onMeasure方法，没有改变。我不想硬编码的大小，因为我觉得这是一件坏事。
为什么会发生这种情况，我该如何解决？
这是我的一些代码片段。
fragment_lumbar.xml：
<?xml version="1.0" encoding="utf-8"?>
<!-- Main screen -->
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@drawable/background_logo">
<!-- Left menu with control buttons -->
<RelativeLayout
android:id="@+id/lumbar_control"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="61dp">
<ImageButton
android:id="@+id/button_arrowup"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_marginTop="40dp"
android:background="@drawable/arrowup_button"
android:contentDescription="@string/moveup_lumbar" />
<!-- Plus/minus buttons -->
<ImageButton
android:id="@+id/button_plus"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@id/button_arrowup"
android:layout_centerVertical="true"
android:background="@drawable/plus_button"
android:contentDescription="@string/inflate_lumbar" />
<ImageButton
android:id="@+id/button_minus"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@id/button_arrowup"
android:layout_toRightOf="@id/button_plus"
android:layout_marginLeft="90dp"
android:background="@drawable/minus_button"
android:contentDescription="@string/deflate_back" />
<!-- Arrown down button -->
<ImageButton
android:id="@+id/button_arrowdown"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@id/button_plus"
android:layout_centerHorizontal="true"
android:background="@drawable/arrowdown_button"
android:contentDescription="@string/movedown_lumbar" />
<!-- Home button -->
</RelativeLayout>
<!-- Right panel -->
<!-- Screen -->
<FrameLayout
android:id="@+id/center_frame"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="20dp"
android:layout_marginTop="7dp"
android:layout_toRightOf="@id/lumbar_control"
android:background="@drawable/screen" >
<TextView
android:id="@+id/text_state"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_margin="10dp"
android:textSize="32sp"
android:gravity="center"
android:textColor="@color/white"
android:text="hello"/>
<!-- Seat screen -->
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/seat"
android:src="@drawable/lumbar_control_seat"/>
<com.SeatStateView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@drawable/lumbar_seat_state"
android:id="@+id/lumbar_seat_state" />
</FrameLayout>
<!-- Home button -->
<Button
android:id="@+id/button_home"
android:layout_width="332dp"
android:layout_height="44dp"
android:layout_centerHorizontal="true"
android:background="@android:color/transparent"
android:layout_alignParentBottom="true"
android:contentDescription="@string/home_button"/>
</RelativeLayout>
lumbar_seat_state：
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >
<item android:drawable="@drawable/lumbar_seat_state_1" />
<item android:drawable="@drawable/lumbar_seat_state_2" />
<item android:drawable="@drawable/lumbar_seat_state_3" />
</layer-list>
lumbar_seat_state_1：
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res/com">
<item android:drawable="@drawable/lumbar_inflate_1"
app:state_inflating="true" />
<item android:drawable="@drawable/lumbar_deflate_1"
app:state_deflating="true" />
<item android:drawable="@drawable/lumbar_idle_1" />
</selector>
SeatStateView.java：
public class SeatStateView extends View {
/* Custom states */
private static final int[] INFLATING_STATE_SET = {
R.attr.state_inflating
};
private static final int[] DEFLATING_STATE_SET = {
R.attr.state_deflating
};
private static final int[] HEATING_STATE_SET = {
R.attr.state_heating
};
private static final int[] COOLING_STATE_SET = {
R.attr.state_cooling
};
/* Inflate/Deflate state */
private boolean isInflating = false;
private boolean isDeflating = false;
/* Heating state */
private boolean isHeating = false;
private boolean isCooling = false;
public SeatStateView(Context context, AttributeSet attrs) {
super(context, attrs);
}
// Overrides the onCreateDrawable to add our custom states
@Override
protected int[] onCreateDrawableState(int extraSpace) {
final int[] drawableState = super.onCreateDrawableState(extraSpace + 2);
// Checking the states
if(isInflating) {
mergeDrawableStates(drawableState, INFLATING_STATE_SET);
}
if(isDeflating) {
mergeDrawableStates(drawableState, DEFLATING_STATE_SET);
}
if(isHeating) {
mergeDrawableStates(drawableState, HEATING_STATE_SET);
}
if(isCooling) {
mergeDrawableStates(drawableState, COOLING_STATE_SET);
}
return drawableState;
}
@Override
protected void onMeasure (int widthMeasureSpec, int heightMeasureSpec){
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
int parentWidth = MeasureSpec.getSize(widthMeasureSpec);
int parentHeight = MeasureSpec.getSize(heightMeasureSpec);
this.setMeasuredDimension(parentWidth, parentHeight);
}
/**
* Clears all the states and set to idle.
*/
public void setIdle() {
isInflating = isDeflating = false;
// Refresh view
refreshDrawableState();
}
public void setInflating(boolean state) {
if(isInflating != state) {
// Update all the states
isInflating = state;
if(isInflating) {
isDeflating = false;
}
// Refresh view
refreshDrawableState();
}
}
public void setDeflating(boolean state) {
if(isDeflating != state) {
// Update all the states
isDeflating = state;
if(isDeflating) {
isInflating = false;
}
// Refresh view
refreshDrawableState();
}
}
public void setHeating(boolean state) {
if(isHeating != state) {
isHeating = state;
if(state) {
isCooling = false;
}
// Refresh view
refreshDrawableState();
}
}
public void setCooling(boolean state) {
if(isCooling != state) {
isCooling = state;
if(state) {
isHeating = false;
}
// Refresh view
refreshDrawableState();
}
}
}
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