更改 Android 自定义 SurfaceView 的大小 [英] Change size of Android custom SurfaceView
问题描述
我正在尝试为 Android 应用创建 2D 游戏引擎.我遵循了本教程,这对于创建全屏显示效果很好,但我不想要那样.我想让我的视图占据屏幕的顶部 2/3(或其他),并用标准的 Android 小部件(按钮、文本输入等)填充底部的三分之一.我不能让它工作.我能得到的最好的是一个空白的白色屏幕.我尝试了很多排列,包括使用外部的 LinerLayout,然后将自定义 SurfaceView 嵌入到嵌套的 RelativeLayout 中,并将 Android 小部件放在嵌套的 LinearLayout 中,但它不起作用.
I'm trying to create a 2D game engine for an Android app. I've followed this tutorial, which works fine for creating a full screen display, but I don't want that. I want to make my view take the top 2/3 (or whatever) of the screen, and fill the bottom third with standard Android widgets (buttons, text entry, etc.). I cannot get this to work. The best I can get is a blank white screen. I've tried many permutations, including using an outer LinerLayout, then embedding the custom SurfaceView inside a nested RelativeLayout, and putting the Android widgets in a nested LinearLayout, and it doesn't work.
例如,这会产生一个白屏,当我觉得它应该是 50% SurfaceView,50% 用于 TextView:
For instance, this produces a white screen, when I feel like it should be 50% SurfaceView, 50% for a TextView:
activity_main.xml:
activity_main.xml:
<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"
android:baselineAligned="false" >
<RelativeLayout
android:layout_width="0dip"
android:layout_height="0dp"
android:layout_weight="1"
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/mapContainer"
>
</RelativeLayout>
<LinearLayout
android:layout_width="0dip"
android:layout_weight="1"
android:layout_height="0dp"
xmlns:android="http://schemas.android.com/apk/res/android" >
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:textColor="@color/white"
android:text="@string/test_str" />
</LinearLayout>
</LinearLayout>
MainActivity.java:
MainActivity.java:
package com.removed.for.privacy;
import com.removed.for.privacy;
import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;
import android.widget.TextView;
public class MainActivity extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
RelativeLayout mapContainer = (RelativeLayout) findViewById(R.id.mapContainer);
JSMapView mapView = new JSMapView(this);
mapContainer.addView(mapView);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}
}
有什么想法吗?
推荐答案
通过大量谷歌搜索和半相关问题弄清楚了.这是我如何让它在纵向模式下填充 2/3 高度(100% 宽度)和 2/3 宽度(100% 高度)横向模式的示例.
Figured it out through lots of googling and semi-related questions. Here's an example of how I got it to fill 2/3 the height in portrait mode (100% width), and 2/3 width (100% height) in landscape.
在自定义表面视图中,重写 onLayout 方法:
In the custom surface view, override the onLayout method:
@Override
public void onLayout(boolean changed, int left, int top, int right, int bottom) {
if (changed) {
(this).layout(0, 0, viewWidth, viewHeight);
}
}
在类构造函数中,添加以下代码:
In the class constructor, add this code:
public YourCustomSurfaceView(Context context) {
super(context);
WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
Display display = wm.getDefaultDisplay();
int rotation = display.getRotation();
// If vertical, we fill 2/3 the height and all the width. If horizontal,
// fill the entire height and 2/3 the width
if (rotation == Surface.ROTATION_0 || rotation == Surface.ROTATION_180) {
screenWidth = display.getWidth();
screenHeight = display.getHeight();
viewHeight = 2 * (screenHeight / 3);
viewWidth = screenWidth;
} else {
screenWidth = display.getWidth();
screenHeight = display.getHeight();
viewWidth = 2 * (screenWidth / 3);
viewHeight = screenHeight;
}
// Enter rest of code here
}
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