①自定义复合控件的布局：
clearable_edit_text.xml:
<?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 = "horizontal">
<EditText
android:id = "@+id/editText"
android:layout_width = "200dp"
android:layout_height = "wrap_content"
/>
<Button
android:id = "@+id/clearButton"
android:layout_width = "100dp"
android:layout_height = "wrap_content"
android:text = "Clear"
/>
</LinearLayout>
很简单，不废话
②选择适合放置子控件的布局类，并将其扩展
package com.yinger;
import android.content.Context;
import android.util.AttributeSet;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.LinearLayout;
public class MyClearableEditText extends LinearLayout {
EditText editText;
Button clearButton;
public MyClearableEditText(Context context, AttributeSet attrs) {
super(context, attrs);
// TODO Auto-generated constructor stub
init();
hookupButton();
}
public MyClearableEditText(Context context) {
super(context);
init();
hookupButton();
}
private void init() {
String infService = Context.LAYOUT_INFLATER_SERVICE;
LayoutInflater li;
li = (LayoutInflater) getContext().getSystemService(infService);
li.inflate(R.layout.clearable_edit_text, this, true);
editText = (EditText) findViewById(R.id.editText);
clearButton = (Button) findViewById(R.id.clearButton);
}
// private void init2() {
// setOrientation(LinearLayout.VERTICAL);
// editText = new EditText(getContext());
// clearButton = new Button(getContext());
// clearButton.setText("Clear");
// int lHeight = LayoutParams.WRAP_CONTENT;
// int lWidth = LayoutParams.FILL_PARENT;
//
// addView(editText,new LinearLayout.LayoutParams(lWidth,lHeight));
// addView(clearButton,new LinearLayout.LayoutParams(lWidth,lHeight));
// }
private void hookupButton(){
clearButton.setOnClickListener(new Button.OnClickListener(){
public void onClick(View v) {
// TODO Auto-generated method stub
editText.setText("");
}
});
}
}
③引用
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello"
/>
<com.yinger.MyClearableEditText
android:layout_width="fill_parent"
android:layout_height="wrap_content"
/>
</LinearLayout>
posted on 2011-06-12 09:53
Ying-er 阅读(947)
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