android遊戲開發—04—操作SDcard

廢話不多說直接上代碼，十分簡單

package com.example.demogame;import java.io.File;import java.io.FileInputStream;import android.app.Activity;import android.os.Bundle;import android.view.View;import android.widget.Button;import android.widget.EditText;import android.widget.Toast;public class MainActivity extends Activity {Button but; // 開啟按鈕引用@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);but = (Button) findViewById(R.id.Button01);but.setOnClickListener(new View.OnClickListener() {public void onClick(View v) {String contentResult = loadContentFromSDCard("AndroidSummary.txt");// 調用讀取檔案方法，獲得檔案內容EditText etContent = (EditText) findViewById(R.id.EditText01);// 執行個體化EditTextetContent.setText(contentResult);}});}public String loadContentFromSDCard(String fileName) {// 從SD卡讀取內容String content = null; // sd卡 的內容字串try {File f = new File("/sdcard/" + fileName);// 待讀取的檔案int length = (int) f.length();byte[] buff = new byte[length];FileInputStream fis = new FileInputStream(f);fis.read(buff); // 從此輸入資料流中將 byte.length 個位元組的資料讀入一個 byte 數組中fis.close(); // 關閉此輸入資料流並釋放與此流關聯的所有系統資源content = new String(buff, "UTF-8");} catch (Exception e) {Toast.makeText(this, "對不起，沒有找到檔案", Toast.LENGTH_SHORT).show();}return content;}}