Android==》数据存储==》File(文件)存储

public class MainActivity extends Activity {

private EditText inputEditText;
private Button btn;
private TextView showView;


@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
inputEditText = (EditText) findViewById(R.id.input);
btn = (Button) findViewById(R.id.btn);
showView = (TextView) findViewById(R.id.show);

btn.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View v) {
// TODO Auto-generated method stub
WriteFiles(inputEditText.getText().toString());
showView.setText(readFiles());
}
});

}

//保存文件内容
public void WriteFiles(String content){
try {
FileOutputStream fos = openFileOutput("stu.txt", MODE_PRIVATE);
fos.write(content.getBytes());
fos.close();
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}

//读取文件内容
public String readFiles(){
String content = null;

try {
FileInputStream fis = openFileInput("stu.txt");
ByteArrayOutputStream baos = new ByteArrayOutputStream();
byte[] buffer = new byte[1024];
int len = 0;
while ((len = fis.read(buffer))!=-1) {
baos.write(buffer, 0, len);
}
content = baos.toString();
fis.close();
baos.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return content;
}


}