android – 如何在布局上为ImageView对象的新副本充气?
作者:互联网
我要做的是创建ImageView对象R.id.tile的N(在本例中为9)副本,将它们中的每一个放置在布局上的不同坐标上,并为每个坐标提供其自己的唯一标识符.
board_layout.xml:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="@drawable/backgroundcolor"
android:orientation="vertical" >
<LinearLayout
android:id="@+id/topbar"
... >
<ImageButton
android:id="@+id/imagebutton"
... />
</LinearLayout>
<RelativeLayout
android:id="@+id/board"
android:layout_width="match_parent"
android:layout_height="345dp"
android:layout_centerVertical="true"
android:background="@drawable/wwfboard" >
<view class="languid.legend.xsolver.DrawView"
android:id="@+id/myView"
android:layout_width="fill_parent"
android:layout_height="fill_parent" />
<ImageView
android:id="@+id/tile"
android:layout_width="21dp"
android:layout_height="21dp"
android:src="@drawable/tile" />
</RelativeLayout>
</RelativeLayout>
BoardLayout.class:
@Override
protected void onCreate(Bundle savedInstance)
{ super.onCreate(savedInstance);
setContentView(R.layout.board_layout);
LayoutInflater inflater = (LayoutInflater)this.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View[] tiles = new ImageView[9];
entire_layout = (RelativeLayout)findViewById(R.layout.board_layout);
for(int i = 0; i<tiles.length; i++){
tiles[i] = (ImageView) inflater.inflate(R.layout.board_layout, null);
tiles[i].setId(1000+i);
params = new RelativeLayout.LayoutParams(-1, 345);
params.leftMargin = 32*2*i;
params.topMargin = 34*2*i;
entire_layout.addView(tiles[i]);
}
...
但是,我一直在最后一行得到“Source not found”错误:layout.addView(tiles [i]); ..
有什么想法吗?
(旁边问题:如果你正在使用坐标,那么RelativeLayout比AbsoluteLayout好吗?)
解决方法:
编辑:
首先使用一个具有您喜欢的属性的ImageView创建布局
例:
在res / layout / singleimage.xml中创建文件
<?xml version="1.0" encoding="utf-8"?>
<ImageView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/image2"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:src="@drawable/ic_launcher"
android:contentDescription="Sample"/>
然后给ImageView充气以获得它的副本
View[] tiles = new ImageView[9];
// get reference to LayoutInflater
LayoutInflater inflater = (LayoutInflater) this.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
for(int i = 0; i<tiles.length; i++) {
//Creating copy of imageview by inflating it
ImageView image = (ImageView) inflater.inflate(R.layout.singleimage, null);
tiles[i] = image;
tiles[i].setId(i);
RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(-1, 345);
params.leftMargin = 32*2*3;
params.topMargin = 34*2*3;
layout.addView(tiles[i]);
}
你在这里设置了id值
tiles[i].setId(i);
但是你(错误地)试图从你的其他资源(你想要’克隆’)获得它:
layout.addView(tiles[i] = (ImageView) findViewById(R.id.tile)); // INCORRECT
相反,如上所述手动设置id,然后:
layout.addView(tiles[i]);
并且无需调用findViewById()
标签:android,imageview,coordinates,inflate,absolutelayout 来源: https://codeday.me/bug/20191007/1866428.html