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我需要實現看起來像這樣位置兒童觀相對於它們的父視圖
難的是，大小和textviews的字體大小必須適應於一個視圖父視圖的寬度和高度。以下是我已經試過，結果是
的xml文件：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:layout_width="200dp"
tools:layout_height="100dp"
android:orientation="vertical">
<BuySellView
android:id="@+id/tradeNow_layoutSell"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:background="@color/gray_light_light">
<LinearLayout
android:id="@+id/smallPart1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="top|right"
android:orientation="horizontal">
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="center_vertical">
<ImageView
android:id="@+id/greenArrowSellImg"
android:layout_width="10dp"
android:layout_height="10dp"
android:src="@drawable/green_arrow"
android:visibility="invisible"
tools:visibility="visible" />
<ImageView
android:id="@+id/redArrowSellImg"
android:layout_width="10dp"
android:layout_height="10dp"
android:src="@drawable/red_arrow"
android:visibility="invisible"
tools:visibility="visible" />
</RelativeLayout>
<TextView
android:id="@+id/smallPart1Txt"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:gravity="top|right"
android:layout_gravity="center_vertical"
android:maxLines="1"
android:text="@string/misc_blank"
android:textColor="@android:color/black"
tools:text="10,015." />
</LinearLayout>
<TextView
android:id="@+id/largePart"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:maxLines="1"
android:text="@string/misc_blank"
android:textColor="@android:color/black"
tools:text="46"
android:gravity="center"
tools:textColor="@color/red_sell" />
<TextView
android:id="@+id/smallPart2"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:maxLines="1"
android:text="@string/misc_blank"
android:textColor="@android:color/black"
android:gravity="left|center_vertical"
tools:text="8"
tools:textColor="@color/red_sell" />
<TextView
android:id="@+id/trdLbl"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:background="@drawable/rounded_corner_sell"
android:text="@string/CommonCapitalSell"
android:textColor="@color/white" />
</BuySellView>
</LinearLayout>
該自定義視圖：
public class BuySellView extends ViewGroup {
private final Rect mTmpChildRect = new Rect();
public BuySellView(Context context) {
super(context);
}
public BuySellView(Context context, AttributeSet attrs) {
super(context, attrs);
}
public BuySellView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
}
@Override
protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
int width = getMeasuredWidth();
int height = getMeasuredHeight();
int t = 10;
int b = 10 + height/3 * 2;
LinearLayout smallPart1 = (LinearLayout) findViewById(R.id.smallPart1);
smallPart1.layout(0, height/3, width/2, b);
smallPart1.setGravity(Gravity.RIGHT);
TextView smallPart1Txt = (TextView) smallPart1.findViewById(R.id.smallPart1Txt);
smallPart1Txt.setTextSize(height/4/2);
TextView largePart = (TextView) findViewById(R.id.largePart);
largePart.setTextSize(height/3);
largePart.layout(width/2, 10, b - t + width/2, b);
TextView smallPart2 = (TextView) findViewById(R.id.smallPart2);
smallPart2.layout(b - t + width/2, t, width, height/2);
smallPart2.setTextSize(height/4/2);
TextView tradeLbl = (TextView) findViewById(R.id.trdLbl);
tradeLbl.layout(width/2 - width/3/2, height/4 * 3 + 10, width/2 + width/3/2, height/4 * 4 + 10);
tradeLbl.setGravity(Gravity.CENTER);
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
LinearLayout smallPart1 = (LinearLayout) findViewById(R.id.smallPart1);
TextView largePart = (TextView) findViewById(R.id.largePart);
TextView smallPart2 = (TextView) findViewById(R.id.smallPart2);
TextView tradeLbl = (TextView) findViewById(R.id.trdLbl);
smallPart1.measure(Math.max(smallPart1.getMeasuredWidth(), widthMeasureSpec/8 * 3), heightMeasureSpec/4);
largePart.measure(heightMeasureSpec/4 * 2, heightMeasureSpec/4 * 2);
smallPart2.measure(Math.max(smallPart2.getMeasuredWidth(), widthMeasureSpec/8), smallPart2.getMeasuredHeight());
tradeLbl.measure(widthMeasureSpec/3, heightMeasureSpec/4);
setMeasuredDimension(widthMeasureSpec, heightMeasureSpec);
}
@Override
public boolean shouldDelayChildPressedState() {
return false;
}
}