郑州app开发AndroidStudio开发小相册实例代码如下。
布局代码如下：
java代码如下：
package cn.xhhkj.xhhkjtest;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.ImageView;
import android.widget.TextView;
public class MainActivity extends Activity implements View.OnClickListener{
private ImageView mImage;
private TextView mText;
private String[] title;
private int[] images;
private int num;
private int index;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initView();
initData();
}
private void initData(){
title =new String[]{"第1张图片","第2张图片","第3张图片","第4张图片","第5张图片"};
images=new int[]{R.drawable.a,R.drawable.b,R.drawable.c,R.drawable.d,R.drawable.e};
mImage.setImageResource(images[0]);
mText.setText(title[0]);
num=title.length;
index=0;
}
private void initView(){
mImage = findViewById(R.id.xhh_image);
mText = findViewById(R.id.xhh_text);
findViewById(R.id.xhh_previous).setOnClickListener(this);
findViewById(R.id.xhh_next).setOnClickListener(this);
}
@Override
public void onClick(View view){
switch (view.getId()){
case R.id.xhh_previous:
if (index == 0){
index=title.length-1;
}else {
index--;
}
break;
case R.id.xhh_next:
if (index==4){
index=0;
}else {
index++;
}
break;
}
updateImageAndTitle();
}
private void updateImageAndTitle() {
mImage.setImageResource(images[index]);
mText.setText(title[index]);
}
}
