创建控件数组中的Android [英] Creating control array in Android
本文介绍了创建控件数组中的Android的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
如何创建的Android控件数组?
如何在Android中创建一个多维(2D)阵列?
How to create a control array in Android? How to create a multidimensional (2D) array in Android?
对于按钮,编辑文本
也 我们如何可以访问编辑文本的元素在2维数组的
also how can we access the elements of edit text in a 2 dimensional array
如何在Android的创造多维数组?并且特别是2维阵列包含按钮或的EditText?
How are multidimensional arrays created in Android? And in particular a 2 dimensional array to contain Buttons or EditText?
另外,如何做这些阵列中的一个元素的访问一旦被创造出来的?
Also, how does one access elements of these arrays once they have been created?
推荐答案
看这是什么样我创建:
Button[] buttons = new Button[10];
EditText[] textboxes = new EditText[10];
View[][] buttonsAndEditboxes = new View[2][5];
// adds 10 buttons to one-dimensional array
for (int i = 0; i < 10; i++) {
buttons[i] = new Button(this);
}
// adds 10 editexts to one-dimensional array
for (int i = 0; i < 10; i++) {
textboxes[i] = new EditText(this);
}
for (int i = 0; i < 2; i++) {
for (int j = 0; j < 5; j++) {
if (i == 0) {
// adds 5 buttons to 2D array
buttonsAndEditboxes[i][j] = new Button(this);
} else {
// adds 5 edittexts to 2D array
buttonsAndEditboxes[i][j] = new EditText(this);
}
}
}
// access first button from the one-dimensional array
Button fromOneDimensionalButton = buttons[0];
// access first EditText from the one-dimensional array
EditText fromOneDimensionalEdit = textboxes[0];
// access Button from the two-dimensional array
Button fromTwoDimensionalButton = (Button) buttonsAndEditboxes[0][0];
// access EditText from the two-dimensional array
EditText fromTwoDimensionalEditText = (EditText) buttonsAndEditboxes[1][0];
编辑:
添加一些code作为一个例子:
Add some code as an example for you:
main.xml中的布局文件:
main.xml layout file:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:id="@+id/test" >
</LinearLayout>
MainActivity.java:
MainActivity.java:
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.LinearLayout;
import android.widget.Toast;
public class MainActivity extends Activity implements OnClickListener {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
LinearLayout layout = (LinearLayout) findViewById(R.id.test);
View[][] buttonsAndEditboxes = new View[2][5];
for (int i = 0; i < 2; i++) {
for (int j = 0; j < 5; j++) {
if (i == 0) {
// adds 5 buttons to 2D array
buttonsAndEditboxes[i][j] = new Button(this);
} else {
// adds 5 edittexts to 2D array
buttonsAndEditboxes[i][j] = new EditText(this);
buttonsAndEditboxes[i][j].setOnClickListener(this);
// you need to create unique id here
buttonsAndEditboxes[i][j].setId(j);
layout.addView(buttonsAndEditboxes[i][j]);
}
}
}
}
public void onClick(View v) {
switch (v.getId()) {
case 0:
Toast.makeText(this, "Editext0 clicked", Toast.LENGTH_SHORT).show();
break;
case 1:
Toast.makeText(this, "Editext1 clicked", Toast.LENGTH_SHORT).show();
break;
case 2:
Toast.makeText(this, "Editext2 clicked", Toast.LENGTH_SHORT).show();
break;
default:
break;
}
}
}
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