我正在开发一个 Android 上的小程序,将一些硬编码文本写入具有硬编码名称的文件。虽然操作成功(没有错误),但我无法在模拟器上找到该文件。我的问题:
- 文件写在哪里?
- 我需要将文件存储在主屏幕或应用程序页面(通常是 UI 可以到达的位置)上的文件路径是什么?
编码:
public class MainActivity extends Activity {
Button writeFile;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
writeFile = (Button) findViewById(R.id.writeFile);
writeFile.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
//Step 1. Get file name.
String file = "hello_files.txt";
String str = "hello world";
Log.v(this.toString(), "Going to write to a file.");
FileOutputStream fos;
try {
fos = openFileOutput(file, MODE_WORLD_READABLE | MODE_WORLD_WRITEABLE);
fos.write(str.getBytes());
Log.v(this.toString(), "Local path = ");
fos.close();
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
Log.v(this.toString(), "File not found!!");
e.printStackTrace();
} catch (IOException e) {
Log.v(this.toString(), "IO Exception.");
e.printStackTrace();
}
}
});
}