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我有這個在我的第一個活動：在android中正確傳遞數據？
private AdapterView.OnItemClickListener _itemClickLis = new OnItemClickListener()
{
public void onItemClick(AdapterView<?> parent, View v, int position, long id)
{
// Now we want to actually get the data location of the file
String [] proj={MEDIA_DATA};
// We request our cursor again
_cursor = managedQuery(_contentUri,
proj, // Which columns to return
null, // WHERE clause; which rows to return (all rows)
null, // WHERE clause selection arguments (none)
null); // Order-by clause (ascending by name)
// We want to get the column index for the data uri
int count = _cursor.getCount();
//
_cursor.moveToFirst();
//
_columnIndex = _cursor.getColumnIndex(MEDIA_DATA);
// Lets move to the selected item in the cursor
_cursor.moveToPosition(position);
// And here we get the filename
String filename = _cursor.getString(_columnIndex);
//*********** You can do anything when you know the file path :-)
showToast(filename);
Intent i = new Intent("com.ave.EDITORSCREEN");
i.putExtra("mnt/sdcard-ext", _ID);
startActivity(i);
}
這不是完整的代碼，但作爲完整的代碼從SD卡收集所有的視頻縮略圖，並顯示他們沿着它們路徑的（在祝酒詞）。我希望能夠點擊縮略圖，並傳遞到下一個活動的數據進行播放，停止，暫停，等你能看到我在第一個活動傳遞的數據：
public class Editor extends Activity {
ImageButton video1;
int isClicked = 0;
ImageButton audio;
int isClicked1 = 0;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.editor);
video1 = (ImageButton) findViewById(R.id.video1);
video1.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
if (isClicked == 0) {
video1.setImageResource(R.drawable.video_pressed);
isClicked = 1;
} else {
video1.setImageResource(R.drawable.video1);
isClicked = 0;
}
}
});
audio = (ImageButton) findViewById(R.id.audio);
audio.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
if (isClicked1 == 0) {
audio.setImageResource(R.drawable.audio_pressed);
isClicked1 = 1;
} else {
audio.setImageResource(R.drawable.audio);
isClicked1 = 0;
}
}
});
}
}
我想要得到的數據，我將需要把
String data = getIntent().getStringExtra("mnt/sdcard-ext");
但在哪裏的onCreate方法？或者，這是甚至正確的方式來獲得傳遞的數據？最後，我怎樣才能播放視頻？是否有某種說視頻播放器的代碼？如果是的話，我會把它放在我最後的活動中？