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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?
我有一个 grid.class,我从中选择了一张图片并将其显示在 activity_main.xml 中。 每当我选择一个图像时,它的 id 将是“imageChosen”。 我可以拖动从 drawable 文件夹中获取的任何图像,但不能拖动带有图像 ID 的动态选择的图像。
<?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>
我不太明白你在说什么,但假设你有一个带有一些图像的网格适配器,所以你选择一个并希望该图像显示在主要活动中; 你只需要这个:
1) 创建一个包含所有图像 refs 的数组:
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) 在您的项目上单击网格视图,将索引发送到 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)并在 DisplayActivity 中显示 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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