Android学习历程-事件处理流程

 

<?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" >

    <TableLayout
        android:id="@+id/Table"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" >

        <TableRow>

            <TextView
                android:id="@+id/TextView01"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="用户名称：" />

            <EditText
                android:id="@+id/EditText01"
                android:layout_width="wrap_content"
                android:scrollHorizontally="true"
                android:text="Admin" />
        </TableRow>

        <TableRow>

            <TextView
                android:id="@+id/TextView02"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="用户密码：" />

            <EditText
                android:id="@+id/EditText02"
                android:layout_width="wrap_content"
                android:inputType="textPassword"
                android:text="" />
        </TableRow>
        <TableRow>

            <TextView
                android:id="@+id/TextView03"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="自动登录：" />

            <CheckBox 
                android:text=""
                android:id="@+id/CheckBox01"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"/>
        </TableRow>
        <TableRow>
            <Button android:text="登录" android:id="@+id/Button01"/>

            <Button android:text="取消" android:id="@+id/Button02"/>
        </TableRow>
    </TableLayout>

</LinearLayout>

　　

package com.example.testcontextmenu;

import android.app.Activity;
import android.os.Bundle;
import android.view.KeyEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.View.OnFocusChangeListener;
import android.view.View.OnKeyListener;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.EditText;
import android.widget.Toast;

public class TestAction extends Activity {

	private EditText myEdit1,myEdit2;
	private CheckBox cb1;
	private Button btn1,btn2;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.test_action);
		myEdit1 = (EditText)findViewById(R.id.EditText01);
		myEdit2 = (EditText)findViewById(R.id.EditText02);
		cb1 = (CheckBox)findViewById(R.id.CheckBox01);
		btn1 =(Button)findViewById(R.id.Button01);
		btn2 =(Button)findViewById(R.id.Button02);
		
		myEdit1.setOnKeyListener(new OnKeyListener() {
			
			@Override
			public boolean onKey(View v, int keyCode, KeyEvent event) {
				//清空EditKey
				myEdit1.setText("");
				return false;
			}
		});
		
		myEdit2.setOnFocusChangeListener(new OnFocusChangeListener() {
			
			@Override
			public void onFocusChange(View v, boolean hasFocus) {
				Toast t1 = Toast.makeText(getApplicationContext(), myEdit2.getText(), Toast.LENGTH_LONG);
				t1.show();
			}
		});
		
		cb1.setOnCheckedChangeListener(new OnCheckedChangeListener() {
			
			@Override
			public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
				// TODO Auto-generated method stub
				Toast t1 = Toast.makeText(getApplicationContext(), cb1.isChecked()+"", Toast.LENGTH_LONG);
				t1.show();
			}
		});
		
		btn1.setOnClickListener(new OnClickListener() {
			
			@Override
			public void onClick(View v) {
				// TODO Auto-generated method stub
				Toast t1 = Toast.makeText(getApplicationContext(), btn1.getText(), Toast.LENGTH_LONG);
				t1.show();
			}
		});
		
		btn2.setOnClickListener(new OnClickListener() {
			
			@Override
			public void onClick(View v) {
				// TODO Auto-generated method stub
				Toast t1 = Toast.makeText(getApplicationContext(), btn2.getText(), Toast.LENGTH_LONG);
				t1.show();
			}
		});
	}
}