Android:下一步和上一步按钮,用于使用不同图像的活动
完整映像活动的XML文件Android:下一步和上一步按钮,用于使用不同图像的活动,android,onclicklistener,buttonclick,Android,Onclicklistener,Buttonclick,完整映像活动的XML文件 <?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" android:weig
<?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"
android:weightSum="800">
<ImageView android:id="@+id/full_image_view"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal"
android:clickable="true"
android:focusable="true"
android:weightSum="200">
<Button
android:layout_width="140dp"
android:layout_height="wrap_content"
android:text="Previous"
android:id="@+id/textView2"
android:layout_gravity="center"/>
<Button
android:layout_width="140dp"
android:layout_height="wrap_content"
android:text="Next"
android:id="@+id/Next"
android:layout_gravity="center" />
</LinearLayout>
</LinearLayout>
活动
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final GridView gv = (GridView)findViewById(R.id.grid_view);
gv.setAdapter(new ImageAdapter(this));
gv.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View v, int position, long id) {
// Sending image id to FullScreenActivity
Intent i = new Intent(getApplicationContext(), FullImageActivity.class);
// passing array index
i.putExtra("id", position);
startActivity(i);
}
});
公共类MainActivity扩展活动{
@凌驾
创建时受保护的void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
最终GridView gv=(GridView)findViewById(R.id.grid\u视图);
gv.setAdapter(新图像适配器(本));
gv.setOnItemClickListener(新的AdapterView.OnItemClickListener(){
@凌驾
public void onItemClick(AdapterView父视图、视图v、整型位置、长id){
//正在向FullScreenActivity发送图像id
Intent i=新的Intent(getApplicationContext(),FullImageActivity.class);
//传递数组索引
i、 putExtra(“id”,位置);
星触觉(i);
}
});
这是我的完整形象活动课
ImageAdapter imageAdapter; ImageView imageView;
int position;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.full_image_layout);
Button next = (Button)findViewById(R.id.Next);
imageView = (ImageView) findViewById(R.id.full_image_view);
Intent i = getIntent();
position = i.getExtras().getInt("id");
imageAdapter = new ImageAdapter(this);
imageView.setImageResource(imageAdapter.mThumbIds[position]);
next.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
if(imageAdapter.mThumbIds[position] > imageAdapter.mThumbIds.length - 1) {
position++;
imageView.setImageResource(imageAdapter.mThumbIds[position]);
}
else{
Log.d("TAG", "Reached Last Record");
}
if(position < imageAdapter.mThumbIds.length - 1) {
position++;
}
else{
Log.d("TAG", "Reached Last Record");
}
}
});
ImageAdapter-ImageAdapter;ImageView-ImageView;
内部位置;
@凌驾
创建时的公共void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.full_image_layout);
按钮下一步=(按钮)findViewById(R.id.next);
imageView=(imageView)findViewById(R.id.full\u image\u view);
Intent i=getIntent();
position=i.getExtras().getInt(“id”);
imageAdapter=新的imageAdapter(此);
setImageResource(imageAdapter.mThumbIds[position]);
next.setOnClickListener(新视图.OnClickListener(){
公共void onClick(视图v){
if(imageAdapter.mThumbIds[position]>imageAdapter.mThumbIds.length-1){
位置++;
setImageResource(imageAdapter.mThumbIds[position]);
}
否则{
Log.d(“标签”,“到达最后一条记录”);
}
如果(位置
我应该如何以及在哪里实现下一个和上一个按钮逻辑,以使事情顺利进行。
任何指导都将不胜感激。我想出来了……需要监听器不断递增或递减包含图像的阵列
next.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
imageView.setImageResource(imageAdapter.mThumbIds[++position]);
}});
previous.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
imageView.setImageResource(imageAdapter.mThumbIds[--position]);
}});
对于多个数组,请使用以下代码
int n;
for Next button
if (n>=int_Info.length)
{
Toast.makeText(this, "Last", Toast.LENGTH_SHORT).show();
}
else {
Glide.with(this).load(int_Info[n++]).into(zoomageView);
}
什么在这里不起作用?我想要下一个和上一个按钮实现…在前面带来一些图像后,我想要下一个和上一个按钮从数组中带来下一个或上一个图像..我为此逻辑编写的代码不起作用!如何在Listview或RecyelView项中做到这一点?