java - 自动设置内容

Question

我是 Android Studio 的新手，我有一个问题。 我目前正在使用此方法来 SetContent

 ImageView img1 = (ImageView)findViewBtId(R.id.Img1);
 ImageView img2 = (ImageView)findViewBtId(R.id.Img2);`

但我想排列 img1,img2,img3所以我可以自动设置内容，像这样

 ArrayList <ImageView> imgs = new ArrayList <ImageView>();
 imgs.add("img1");
 imgs.add("img2");
 imgs.add("img3");

 for (int i =0;int i < imgs.length();i++)
 { imgs[i] = ...;}

我可以使用这个还是其他东西？ Android Studio 不能有这样的东西吗？

Answer 1

You can assign dynemically like: 

Here is the XML

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <ImageView
        android:id="@+id/img1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"/>

    <ImageView
        android:id="@+id/img2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"/>

</LinearLayout>

And the Actvity File

public class TestActivity extends Activity{

    private String[] id;
    private ImageView[] imageViews = new ImageView[2];

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.testactivity);

        int temp;
        id = new String[]{"img1", "img2"};

        for(int i=0; i<id.length; i++){
           temp = getResources().getIdentifier(id[i], "id", getPackageName());
           imageViews[i] = (ImageView) findViewById(temp);
        }
    }

Hope you understand and do according your need.