懸浮對話方塊Android代碼實現_Android

直接上代碼： 

  private void setDialog(){    View view = getLayoutInflater().inflate(R.layout.dialog_country, null);    mDialog = new Dialog(this);    mDialog.setContentView(view, new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));    Window window = mDialog.getWindow();    WindowManager.LayoutParams wl = window.getAttributes();    wl.x = 0;    wl.y = getWindowManager().getDefaultDisplay().getHeight();    wl.width = ViewGroup.LayoutParams.MATCH_PARENT;    wl.height = ViewGroup.LayoutParams.WRAP_CONTENT;    mDialog.onWindowAttributesChanged(wl);    mDialog.setCanceledOnTouchOutside(true);    mDialog.show();        Button btnChina = (Button) view.findViewById(R.id.btnChina);    Button btnUSA = (Button) view.findViewById(R.id.btnUSA);    Button btnUK = (Button) view.findViewById(R.id.btnUK);    Button btnCancel = (Button) view.findViewById(R.id.btnCancel);        btnChina.setOnClickListener(new OnClickListener(){      @Override      public void onClick(View v) {        // TODO Auto-generated method stub        mQuery.id(R.id.btnCountry).getTextView().setText("China");        mDialog.dismiss();      }          });    btnUSA.setOnClickListener(new OnClickListener(){      @Override      public void onClick(View v) {        // TODO Auto-generated method stub        mQuery.id(R.id.btnCountry).getTextView().setText("USA");        mDialog.dismiss();      }          });    btnUK.setOnClickListener(new OnClickListener(){      @Override      public void onClick(View v) {        // TODO Auto-generated method stub        mQuery.id(R.id.btnCountry).getTextView().setText("UK");        mDialog.dismiss();      }          });    btnCancel.setOnClickListener(new OnClickListener(){      @Override      public void onClick(View v) {        // TODO Auto-generated method stub        mDialog.dismiss();      }          });  } 

首先inflate一個xml檔案，產生一個view；再建立一個Dialog，設定Dialog的View為inflate的view；然後通過WindowManager.LayoutParams設定Dialog的長度、寬度、顯示的位置等等，最後setCanceledOnTouchOutside(true)，點擊其他地方可以退出Dialog。運行效果如下：

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