1. packagecn.umgsai.file; 
    2.             
    3.             
  3. importjava.io.File; 
    4.             
  4. importjava.io.FileNotFoundException; 
    5.             
  5. importjava.io.FileOutputStream; 
    6.             
  6. importjava.io.InputStream; 
    7.             
  7. importjava.io.OutputStream; 
    8.             
    9.             
  9. importcn.umgsai.service.FileService; 
    10.             
    11.             
  11. importandroid.app.Activity; 
    12.             
  12. importandroid.content.Context; 
    13.             
  13. importandroid.os.Bundle; 
    14.             
  14. importandroid.os.Environment; 
    15.             
  15. importandroid.util.Log; 
    16.             
  16. importandroid.view.View; 
    17.             
  17. importandroid.widget.Button; 
    18.             
  18. importandroid.widget.EditText; 
    19.             
  19. importandroid.widget.TextView; 
    20.             
  20. importandroid.widget.Toast; 
    21.             
    22.             
  22. publicclassDataActivityextendsActivity{ 
    23.             
  23. privateEditTextfilenameText; 
    24.             
  24. privateEditTextcontentText; 
    25.             
  25. privateTextViewresultView; 
    26.             
  26. privatestaticfinalStringTAG="DataActivity"; 
    27.             
  27. /**Calledwhentheactivityisfirstcreated.*/
    28.             
  28. @Override
    29.             
  29. publicvoidonCreate(BundlesavedInstanceState){ 
    30.             
  30. super.onCreate(savedInstanceState); 
    31.             
  31. setContentView(R.layout.main); 
    32.             
  32. filenameText=(EditText)this.findViewById(R.id.filename); 
    33.             
  33. contentText=(EditText)this.findViewById(R.id.content); 
    34.             
  34. resultView=(TextView)this.findViewById(R.id.result); 
    35.             
  35. Stringfilename=filenameText.getText().toString(); 
    36.             
  36. Buttonbutton=(Button)this.findViewById(R.id.button); 
    37.             
  37. ButtonshowButton=(Button)this.findViewById(R.id.showButton); 
    38.             
  38. button.setOnClickListener(listener); 
    39.             
  39. showButton.setOnClickListener(listener); 
    40.             
  40. } 
    41.             
  41.  
    42.             
  42. privateView.OnClickListenerlistener=newView.OnClickListener(){ 
    43.             
  43. @Override
    44.             
  44. publicvoidonClick(Viewv){ 
    45.             
  45. Buttonbutton=(Button)v; 
    46.             
  46. Stringfilename=filenameText.getText().toString(); 
    47.             
  47. switch(button.getId()){ 
    48.             
  48. caseR.id.button://如果是保存按钮 
    49.             
  49. intresId=R.string.success; 
    50.             
  50.  
    51.             
  51. Stringcontent=contentText.getText().toString(); 
    52.             
  52. Filefile=newFile(Environment.getExternalStorageDirectory(),filename); 
    53.             
  53. if(Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)){ 
    54.             
  54. try{ 
    55.             
  55. //OutputStreamoutStream=DataActivity.this.openFileOutput(filename,Context.MODE_WORLD_WRITEABLE+Context.MODE_WORLD_READABLE); 
    56.             
  56. //四中操作模式 
    57.             
  57. //Context.MODE_PRIVATE=0覆盖、私有 
    58.             
  58. //Context.MODE_APPEND=32768追加、私有 
    59.             
  59. //Context.MODE_WORLD_READABLE=1其他的程序可以访问 
    60.             
  60. //Context.MODE_WORLD_WRITEABLE=2 
    61.             
  61. //Environment.getExternalStorageDirectory()==newfile("/sdcard") 
    62.             
  62.  
    63.             
  63.  
    64.             
  64. FileOutputStreamoutStream=newFileOutputStream(file); 
    65.             
  65. try{ 
    66.             
  66. FileService.save(outStream,content); 
    67.             
  67. }catch(Exceptione){ 
    68.             
  68. Log.e(TAG,e.toString()); 
    69.             
  69. resId=R.string.error; 
    70.             
  70. } 
    71.             
  71. }catch(FileNotFoundExceptione){ 
    72.             
  72. Log.e(TAG,e.toString()); 
    73.             
  73. resId=R.string.error; 
    74.             
  74. } 
    75.             
  75. Toast.makeText(DataActivity.this,resId,Toast.LENGTH_LONG).show(); 
    76.             
  76. } 
    77.             
  77. else{ 
    78.             
  78. Toast.makeText(DataActivity.this,"SD卡不存在或者写保护",Toast.LENGTH_LONG).show(); 
    79.             
  79. } 
    80.             
  80. break; 
    81.             
  81. caseR.id.showButton://如果是显示按钮 
    82.             
  82. try{ 
    83.             
  83. InputStreaminStream=DataActivity.this.openFileInput(filename); 
    84.             
  84. Stringtext=FileService.read(inStream); 
    85.             
  85. resultView.setText(text); 
    86.             
  86. }catch(Exceptione){ 
    87.             
  87. Log.e(TAG,e.toString()); 
    88.             
  88. resId=R.string.error; 
    89.             
  89. Toast.makeText(DataActivity.this,"读取失败",Toast.LENGTH_LONG).show(); 
    90.             
  90. } 
    91.             
  91.  
    92.             
  92. break; 
    93.             
  93. } 
    94.             
  94. } 
    95.             
  95. }; 
    96.             
  96.  
    97.             
  97. }
    98.

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