Android往SD卡上存储文件
public class DataActivity extends Activity { private EditText filenameText; private EditText contentText; private TextView resultView; private static final String TAG = "DataActivity"; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); filenameText = (EditText) this.findViewById(R.id.filename); contentText = (EditText) this.findViewById(R.id.content); resultView = (TextView) this.findViewById(R.id.result); String filename = filenameText.getText().toString(); Button button = (Button) this.findViewById(R.id.button); Button showButton = (Button) this.findViewById(R.id.showButton); button.setOnClickListener(listener); showButton.setOnClickListener(listener); } private View.OnClickListener listener = new View.OnClickListener() { @Override public void onClick(View v) { Button button = (Button) v; String filename = filenameText.getText().toString(); switch(button.getId()){ case R.id.button://如果是保存按钮 int resId = R.string.success; String content = contentText.getText().toString(); File file = new File(Environment.getExternalStorageDirectory(),filename); if(Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)){ try { //OutputStream outStream = DataActivity.this.openFileOutput(filename, Context.MODE_WORLD_WRITEABLE+Context.MODE_WORLD_READABLE); //四中操作模式 //Context.MODE_PRIVATE=0 覆盖、私有 //Context.MODE_APPEND=32768追加、私有 //Context.MODE_WORLD_READABLE=1其他的程序可以访问 //Context.MODE_WORLD_WRITEABLE=2 //Environment.getExternalStorageDirectory()==new file("/sdcard") FileOutputStream outStream = new FileOutputStream(file); try { FileService.save(outStream, content); } catch (Exception e) { Log.e(TAG, e.toString()); resId = R.string.error; } } catch (FileNotFoundException e) { Log.e(TAG, e.toString()); resId = R.string.error; } Toast.makeText(DataActivity.this, resId, Toast.LENGTH_LONG).show(); } else{ Toast.makeText(DataActivity.this,"SD卡不存在或者写保护", Toast.LENGTH_LONG).show(); } break; case R.id.showButton://如果是显示按钮 try { InputStream inStream = DataActivity.this.openFileInput(filename); String text = FileService.read(inStream); resultView.setText(text); } catch (Exception e) { Log.e(TAG, e.toString()); resId = R.string.error; Toast.makeText(DataActivity.this, "读取失败", Toast.LENGTH_LONG).show(); } break; } } }; }
积跬步以致千里,积小流以成江海。
2016年5月之前的博文发布于51cto,链接地址:shamrock.blog.51cto.com
2016年5月之后博文发布与cnblogs上。
Github地址 https://github.com/umgsai
Keep moving~!!!
2016年5月之前的博文发布于51cto,链接地址:shamrock.blog.51cto.com
2016年5月之后博文发布与cnblogs上。
Github地址 https://github.com/umgsai
Keep moving~!!!