我想實現一個拖放android的例子。長時間按下某個項目後,我將其拖動到目標級別並放在那裏。某種方式我成功了。但我想要一些不同的東西。我做了這樣的事情.. 如何將項目從列表視圖拖放到外部textView上?
但我想所有項目添加到ListView和我將在以後的ListView長按PIC了一個項目,那麼我將這個項目拖到我的目標水平下降它在那裏。我想是這樣的..
我的代碼如下......
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
findViewById(R.id.mango).setOnLongClickListener(longListen);
findViewById(R.id.orange).setOnLongClickListener(longListen);
findViewById(R.id.apple).setOnLongClickListener(longListen);
findViewById(R.id.banana).setOnLongClickListener(longListen);
findViewById(R.id.drop_here).setOnDragListener(DropListener);
listview.setOnItemLongClickListener(new OnItemLongClickListener() {
public boolean onItemLongClick(AdapterView<?> arg0, View arg1,
int pos, long id) {
// TODO Auto-generated method stub
Log.i("long clicked","pos"+" "+pos);
return true;
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
OnLongClickListener longListen = new OnLongClickListener() {
@Override
public boolean onLongClick(View v) {
DragShadow dragShadow = new DragShadow(v);
ClipData data = ClipData.newPlainText("", "");
v.startDrag(data, dragShadow, v, 0);
return false;
}
};
private class DragShadow extends View.DragShadowBuilder {
ColorDrawable greyBox;
public DragShadow(View view) {
super(view);
// TODO Auto-generated constructor stub
greyBox = new ColorDrawable(Color.LTGRAY);
}
@Override
public void onDrawShadow(Canvas canvas) {
// TODO Auto-generated method stub
// super.onDrawShadow(canvas);
greyBox.draw(canvas);
}
@Override
public void onProvideShadowMetrics(Point shadowSize,
Point shadowTouchPoint) {
// TODO Auto-generated method stub
// super.onProvideShadowMetrics(shadowSize, shadowTouchPoint);
View v = getView();
int height = (int) v.getHeight()/2;
int width = (int) v.getWidth()/2;
greyBox.setBounds(0, 0, width, height);
shadowSize.set(width, height);
shadowTouchPoint.set(width/2, height/2);
}
}
OnDragListener DropListener = new View.OnDragListener() {
@Override
public boolean onDrag(View v, DragEvent event) {
// TODO Auto-generated method stub
int dragEvent = event.getAction();
switch (dragEvent) {
case DragEvent.ACTION_DRAG_ENTERED:
Log.i("Drag ", "Entered");
break;
case DragEvent.ACTION_DRAG_EXITED:
Log.i("Drag ", "Exit");
break;
case DragEvent.ACTION_DROP:
Log.i("Drag ", "Drop");
TextView target = (TextView) v;
TextView dragg = (TextView) event.getLocalState();
target.setText(dragg.getText());
break;
default:
break;
}
return true;
}
};
}
我已經嘗試了一些教程,但我無法從那裏得到的解決方案。 Android List View Drag and Drop sort
它會在目標上做什麼?我的意思是,它是從它的地方被刪除?它會轉換爲TEXT?! – MAST3RMIND
目標將顯示我拖動的項目?基本上我想將這個代碼添加到我的另一個項目。將會添加一些其他功能主義者。如果我得到這個解決方案,那麼我的其他要求將得到滿足。 – TKumar