Android应用源码之25.数据存储(4.zip项目安卓应用源码下载

package com.szy.file; import java.io.InputStream; import java.io.OutputStream; import android.app.Activity; import android.content.Context; import android.os.Bundle; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.EditText; import android.widget.TextView; import android.widget.Toast; import com.szy.file.service.FileService; public class MainActivity extends Activity { private Button btnSave; private Button btnRead; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); btnRead = (Button) findViewById(R.id.btnRead); btnSave = (Button) findViewById(R.id.btnSave); btnRead.setOnClickListener(listener); btnSave.setOnClickListener(listener); } OnClickListener listener = new OnClickListener() { @Override public void onClick(View v) { FileService service = new FileService(); EditText editName = (EditText) findViewById(R.id.editName); EditText editContent = (EditText) findViewById(R.id.editContent); TextView txtResult = (TextView) findViewById(R.id.txtResult); switch (v.getId()) { case R.id.btnSave: try { OutputStream outStream = MainActivity.this.openFileOutput(editName.getText().toString(), Context.MODE_APPEND); service.save(outStream, editContent.getText().toString()); Toast.makeText(MainActivity.this, "保存成功", Toast.LENGTH_LONG).show(); } catch (Exception e) { e.printStackTrace(); } break; case R.id.btnRead: try { InputStream inStream = MainActivity.this.openFileInput(editName.getText().toString()); String content = service.read(inStream); txtResult.setText(content); } catch (Exception e) { e.printStackTrace(); } break; } } }; }