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我在Eclipse中使用Android。我有我的隨機圖像發生器工作。在加載頁面的這一刻,在用戶單擊按鈕之前,ImageView1中會自動加載一個隨機圖像。 (在用戶點擊按鈕之後,另一個隨機圖像被加載)。 *當頁面加載時,我不希望任何圖像顯示在ImageView1上,直到用戶單擊按鈕。我怎麼能夠更改我的代碼,以便在用戶單擊按鈕之前不會自動加載圖像?隨機圖像生成器Android
package com.senior.callacab2;
import java.util.Random;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.widget.ImageView;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
public class Generatedrinks extends Activity implements OnClickListener {
private int[] mPhotoIds = new int [] { R.drawable.img1,
R.drawable.img2, R.drawable.img3, R.drawable.img4, R.drawable.img5,
R.drawable.img6, R.drawable.img7 };
private static final Random rgenerator = new Random();
private ImageView iv;
// Makes new images appear after every button click
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.generatedrinks);
Integer q = mPhotoIds[rgenerator.nextInt(mPhotoIds.length)];
iv = (ImageView) findViewById(R.id.imageView1);
iv.setImageResource(q);
View nextButton = findViewById(R.id.button2);
nextButton.setOnClickListener(this);
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
switch (v.getId()) {
case R.id.button2:
iv.setImageResource(mPhotoIds[rgenerator.nextInt(mPhotoIds.length)]);
break;
}
// Makes button2 invisible after two clicks the first click generates a
// random image and the second click makes the button disappear
Button generator = (Button) findViewById(R.id.button2);
generator.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
Button button = (Button) v;
button.setVisibility(View.INVISIBLE);
}
});
// When this button is pressed it takes the user to the next layout
// called Scoreclass.class
Button next = (Button) findViewById(R.id.button1);
next.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
Intent myIntent = new Intent(view.getContext(), Scorecard.class);
startActivityForResult(myIntent, 0);
}
});
}
}
謝謝這工作完美。 – eg8842 2012-02-27 22:16:52
很高興幫助。如果這回答您的問題令您滿意,則可以單擊此答案旁邊的複選標記以將其標記爲接受的答案。 – kabuko 2012-02-27 22:29:18