level 3
贴吧用户_aePeX48
楼主
import java.io.FileOutputStream;
public class MainActivity extends AppCompatActivity {
private Button btnWriteDisk, btnReadDisk, btnWriteSD, btnReadSD, btnWriteSP, btnReadSP, btnJSON;
private TextView txtDisplay;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btnWriteDisk = (Button) findViewById(R.id.button);
btnReadDisk = (Button) findViewById(R.id.button2);
btnWriteSD = (Button) findViewById(R.id.button3);
btnReadSD = (Button) findViewById(R.id.button4);
btnWriteSP = (Button) findViewById(R.id.button5);
btnReadSP = (Button) findViewById(R.id.button6);
btnJSON = (Button) findViewById(R.id.button7);
txtDisplay = (TextView) findViewById(R.id.textView);
// 存硬盘
btnWriteDisk.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String str = "出塞\r\n\r\n唐·王昌龄\r\n\r\n秦时明月汉时关,\r\n\r\n万里长征人未还。\r\n\r\n但使龙城飞将在,\r\n\r\n不教胡马度阴山。";
try {
FileOutputStream fos = openFileOutput("poem1.txt", MODE_PRIVATE);
fos.write(str.getBytes());
fos.close();
Toast.makeText(MainActivity.this, "硬盘存储文件成功!", Toast.LENGTH_LONG).show();
} catch (Exception e1) {
Toast.makeText(MainActivity.this, "硬盘存储文件出现问题!", Toast.LENGTH_LONG).show();
}
}
});
}
}
2025年11月14日 03点11分
1
public class MainActivity extends AppCompatActivity {
private Button btnWriteDisk, btnReadDisk, btnWriteSD, btnReadSD, btnWriteSP, btnReadSP, btnJSON;
private TextView txtDisplay;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btnWriteDisk = (Button) findViewById(R.id.button);
btnReadDisk = (Button) findViewById(R.id.button2);
btnWriteSD = (Button) findViewById(R.id.button3);
btnReadSD = (Button) findViewById(R.id.button4);
btnWriteSP = (Button) findViewById(R.id.button5);
btnReadSP = (Button) findViewById(R.id.button6);
btnJSON = (Button) findViewById(R.id.button7);
txtDisplay = (TextView) findViewById(R.id.textView);
// 存硬盘
btnWriteDisk.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String str = "出塞\r\n\r\n唐·王昌龄\r\n\r\n秦时明月汉时关,\r\n\r\n万里长征人未还。\r\n\r\n但使龙城飞将在,\r\n\r\n不教胡马度阴山。";
try {
FileOutputStream fos = openFileOutput("poem1.txt", MODE_PRIVATE);
fos.write(str.getBytes());
fos.close();
Toast.makeText(MainActivity.this, "硬盘存储文件成功!", Toast.LENGTH_LONG).show();
} catch (Exception e1) {
Toast.makeText(MainActivity.this, "硬盘存储文件出现问题!", Toast.LENGTH_LONG).show();
}
}
});
}
}