数値をファイルに書き込んでおり、そのファイルを電子メールで送信したいと考えています。ファイルは電子メールで受信されますが、空です。
しかし、「data/data/com.example.write_file/files/samplefile.txt」を見ると、ファイルは問題なく、レコードが書き込まれています。
私が間違っていることを誰か知っていますか?
package com.example.write_file;
+import java.io.FileOutputStream;
public class MainActivity extends Activity {
private EditText getInput;
int D;
String W;
char chr;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
getInput = (EditText) findViewById(R.id.getInput);
D=0;
TextView textView1 = (TextView) findViewById(R.id.textView1);
textView1.setText("Write a number you want to send in the txt file") ;
}
public void onClick(View view) {
write_file();
D=D+1;
W=getInput.getText().toString(); //will get a string
if (getInput.getText().length() > 0){
chr=W.charAt(0);} //W convert to char
switch (view.getId()) {
case R.id.button1:
if (((chr==(char)45)&&(getInput.getText().length() < 2))||(getInput.getText().length() == 0)){
Toast.makeText(this, "Please enter a text",
Toast.LENGTH_LONG).show();
return;
}
TextView getInput1 = (TextView) findViewById(R.id.textView1);
getInput1.setText("Write a number you want to send in the txt file") ;
break; }
}
public void onClick2(View view) {
sendfile();
finish();
}
public void write_file() { //writes into local not to a sdcard
try { // catches IOException below
FileOutputStream fOut = openFileOutput("samplefile.txt",MODE_APPEND);
OutputStreamWriter osw = new OutputStreamWriter(fOut);
osw.append(W + "\n"); // Write the string to the file - "\n" similar to writeln in pascal (use wordpad not notepad)
osw.flush();
osw.close();
if (D>=55) { finish();}
Toast.makeText(this, "I am writing to the file",
Toast.LENGTH_SHORT).show();
// the file you can find in DDMS-File Explorer-"/data/data/your_project_package_structure/files/samplefile.txt"
// there is an icon mobile phone for pulling file from device or putting file onto device
}
catch (IOException ioe)
{Toast.makeText(this, "Exception-file not exists?",
Toast.LENGTH_SHORT).show();}
}
/*
public void sendfile(){
String nfile;
nfile="samplefile.txt";
Intent emailIntent = new Intent(Intent.ACTION_SEND);
emailIntent.setType("text/plain");
emailIntent.putExtra(android.content.Intent.ACTION_SENDTO, new String[]
{"xxxx@yyyy.com"});
emailIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
emailIntent.putExtra(Intent.EXTRA_SUBJECT,
"File attached.");
emailIntent.putExtra(Intent.EXTRA_STREAM, Uri.parse("data/data/com.example.write_file/files"+ nfile));
startActivity(Intent.createChooser(emailIntent,
"Send email using.."));
Toast.makeText(this, "The file was sent",
Toast.LENGTH_SHORT).show();
} */
public void sendfile(){
Intent emailIntent = new Intent(Intent.ACTION_SEND);
emailIntent.setType("text/plain");
emailIntent.putExtra(android.content.Intent.ACTION_SENDTO, new String[]
{"xxxx@yyyy.com"});
emailIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
emailIntent.putExtra(Intent.EXTRA_SUBJECT,
"File attached.");
File file = getFileStreamPath("samplefile.txt");
emailIntent.putExtra(Intent.EXTRA_STREAM, Uri.parse("file://"+file.getAbsolutePath()));
startActivity(Intent.createChooser(emailIntent,
"Send email using.."));
Toast.makeText(this, "The file was sent",
Toast.LENGTH_SHORT).show();
}
}
**in the manifest I put:**
<provider
android:name="android.support.v4.content.FileProvider"
android:authorities="com.example.write_file"
android:exported="false"
android:grantUriPermissions="true">
<meta-data
android:name="android.support.FILE_PROVIDER_PATHS"
android:resource="@xml/my_path" />
</provider>
<activity
android:name="com.example.write_file.MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
**and in the my_path.xml :**
<paths>
<files-path name="files" path="files/"/>
</paths>