內容提供者——讀取簡訊
(1)MainActivity
public class MainActivity extends ActionBarActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
public void click(View v) {
// 1.獲取XmlSerializer的例項
XmlSerializer serializer = Xml.newSerializer();
// 2.設定序列化引數
String pathString = Environment.getExternalStorageDirectory()
.getPath();
File file = new File(pathString, "smsbackup.xml");
try {
FileOutputStream fos = new FileOutputStream(file);
serializer.setOutput(fos, "utf-8");
// 3.寫xml文件開頭
serializer.startDocument("utf-8", true);
// 4.寫xml根節點
serializer.startTag(null, "smss");
// 5.構造uri
Uri uri = Uri.parse("content://sms/");
// 6.通過內容解析者查詢
Cursor cursor = getContentResolver().query(uri,
new String[] { "address", "date", "body" }, null, null,
null);
if (cursor != null && cursor.getCount() > 0) {
while (cursor.moveToNext()) {
String addressString = cursor.getString(0);
String dateString = cursor.getString(1);
String bodyString = cursor.getString(2);
//7.寫入sms節點
serializer.startTag(null, "sms");
//8.寫入address節點
serializer.startTag(null, "address");
serializer.text(addressString);
serializer.endTag(null, "address");
//9.寫入date節點
serializer.startTag(null, "date");
serializer.text(dateString);
serializer.endTag(null, "date");
//10.寫入body節點
serializer.startTag(null, "body");
serializer.text(bodyString);
serializer.endTag(null, "body");
serializer.endTag(null, "sms");
}
}
serializer.endTag(null, "smss");
serializer.endDocument();
fos.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}
(2)配置檔案
配置讀寫和儲存操作
<uses-permission android:name="android.permission.WRITE_SMS" />
<uses-permission android:name="android.permission.READ_SMS" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />