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   源码介绍

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package com.example.datastorage;

import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;


public class AddMsg extends Activity{
	private EditText ID;
	private EditText Name;
	private EditText Birthday;
	private Button saveBt;
	private Button resetBt;
    int i;



	/** Called when the activity is first created. */
	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.add_msg);

		bindView();

		

	}

public void bindView() {
		ID = (EditText) findViewById(R.id.ID);
		Name = (EditText) findViewById(R.id.Name);
		Birthday = (EditText) findViewById(R.id.Birthday);
		saveBt = (Button) findViewById(R.id.saveMsg);
		resetBt=(Button) findViewById(R.id.resetMsg);

		saveBt.setOnClickListener(new OnClickListener() {
			public void onClick(View v) {
				if(ID.getText().toString().equals("")||Name.getText().toString().equals("")||
						Birthday.getText().toString().equals("")){
                
				new AlertDialog.Builder(AddMsg.this).setTitle(
						R.string.notice).setIcon(R.drawable.alert).setMessage(
						R.string.warning).setPositiveButton(R.string.ok,
						new DialogInterface.OnClickListener() {
							public void onClick(DialogInterface dialog,
									int which) {
								
							}
						}).show();
			}
		
		else{
			SharedPreferences Msg = getSharedPreferences("StudentMsg", 0);
			// 将新目录保存进去
			int totalNum=Msg.getInt("totalNum", 0);
			totalNum  ;
			
			Msg.edit().putInt("totalNum", totalNum).putString("ID" totalNum,
					ID.getText().toString()).putString("Name" totalNum,
					Name.getText().toString()).putString("Birthday" totalNum,
							Birthday.getText().toString()).commit();
			ID.setText("");
			Name.setText("");
			Birthday.setText("");
			
		}
	}
		});
		
		resetBt.setOnClickListener(new OnClickListener() {
			public void onClick(View v) {ID.setText("");
			Name.setText("");
			Birthday.setText("");}
		});
	}
		
	@Override
	protected void onStop() {
		super.onStop();
		
			
		
	}


}