读写内部文件

public class MainActivity
extends ActionBarActivity {

TextView textView;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        

        textView = (TextView) findViewById(R.id.textView);

        

        findViewById(R.id.button_write).setOnClickListener(new OnClickListener() {

@Override

public
void onClick(View arg0) {

//
TODO Auto-generated method stub

try {

FileOutputStream fileOutputStream = openFileOutput("myfile.txt", Context.MODE_PRIVATE);

try {

OutputStreamWriter outputStreamWriter =
new OutputStreamWriter(fileOutputStream, "utf-8");

outputStreamWriter.write("烂州是全国最不适合经商创业的省会城市\n建议把全国各地的左派集中在甘肃居住\n甘肃只适合计划经济");

outputStreamWriter.flush();

outputStreamWriter.close();

fileOutputStream.close();

} catch (UnsupportedEncodingException e) {

//
TODO Auto-generated catch block

e.printStackTrace();

} catch (IOException e) {

//
TODO Auto-generated catch block

e.printStackTrace();

}

} catch (FileNotFoundException e) {

//
TODO Auto-generated catch block

e.printStackTrace();

}

}

});

        

        findViewById(R.id.button_read).setOnClickListener(new View.OnClickListener() {

@Override

public
void onClick(View arg0) {

//
TODO Auto-generated method stub

try {

FileInputStream inputStream = openFileInput("myfile.txt");

InputStreamReader inputStreamReader =
new InputStreamReader(inputStream, "utf-8");

char buffer[] =
new char[inputStream.available()];

inputStreamReader.read(buffer);

inputStreamReader.close();

inputStream.close();

String str = new String(buffer);

textView.setText(str);

} catch (FileNotFoundException e) {

//
TODO Auto-generated catch block

e.printStackTrace();

} catch (UnsupportedEncodingException e) {

//
TODO Auto-generated catch block

e.printStackTrace();

} catch (IOException e) {

//
TODO Auto-generated catch block

e.printStackTrace();

}

}

});

    }

}