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[英]I have an image slider made up of 4 images.I would like to place a different text view on each of these images?
[英]I have a grid view of images.I am selecting one image from it and showing it in activity2.xml.Now I want to drag this image view .How to do this?
我有一個 grid.class,我從中選擇了一張圖片並將其顯示在 activity_main.xml 中。 每當我選擇一個圖像時,它的 id 將是“imageChosen”。 我可以拖動從 drawable 文件夾中獲取的任何圖像,但不能拖動帶有圖像 ID 的動態選擇的圖像。
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/root"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="@dimen/activity_vertical_margin" >
<ImageView
android:layout_width="100dp"
android:layout_height="100dp"
android:id="@+id/image1"
android:src="@mipmap/ic_launcher"
android:layout_centerVertical="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true" />
</RelativeLayout>
我不太明白你在說什么,但假設你有一個帶有一些圖像的網格適配器,所以你選擇一個並希望該圖像顯示在主要活動中; 你只需要這個:
1) 創建一個包含所有圖像 refs 的數組:
public class Images{
// references to our images
private Integer[] mIds = {
R.drawable.sample_2, R.drawable.sample_3,
R.drawable.sample_4, R.drawable.sample_5,
R.drawable.sample_6, R.drawable.sample_7,
R.drawable.sample_0, R.drawable.sample_1,
R.drawable.sample_2, R.drawable.sample_3,
R.drawable.sample_4, R.drawable.sample_5,
R.drawable.sample_6, R.drawable.sample_7,
R.drawable.sample_0, R.drawable.sample_1,
R.drawable.sample_2, R.drawable.sample_3,
R.drawable.sample_4, R.drawable.sample_5,
R.drawable.sample_6, R.drawable.sample_7
};
}
2) 在您的項目上單擊網格視圖,將索引發送到 displayActivity:
gridview.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View v, int position, long id) {
Intent mInDisplay= new Intent(MainActivity.this, DisplayActivity.class);
mInDisplay.putExtra("Index", position);
startActivity(mInDisplay);
}
});
3)並在 DisplayActivity 中顯示 img :
//onCreate()
Bundle bundle=getIntent().getExtras();
int index=bundle.getInt("Index");
ImageView mImage = (ImageView) findViewById(R.id.Img);
mImage.setImageResource(Images.mIds[index]);
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