android 用PopupWindow实现漂浮按钮
PopupWindowDemo.java
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import android.app.Activity; import android.content.Context; import android.os.Bundle; import android.view.Gravity; import android.view.LayoutInflater; import android.view.View; import android.view.View.OnClickListener; import android.view.ViewGroup.LayoutParams; import android.widget.Button; import android.widget.ImageButton; import android.widget.ImageView; import android.widget.PopupWindow; public class PopupWindowDemo extends Activity { private Button btn; PopupWindow mPopupWindowSmall, mPopupWindowBig; ImageButton btnSmall, btnBig; public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); btn = (Button) findViewById(R.id.btn); btn.setOnClickListener(new OnClickListener() { public void onClick(View v) { // TODO Auto-generated method stub Context mContext = PopupWindowDemo.this; btnBig = new ImageButton(mContext); btnBig.setImageResource(R.drawable.big); btnBig.setOnClickListener(new OnClickListener() { public void onClick(View v) { // TODO Auto-generated method stub setTitle("big"); } }); mPopupWindowBig = new PopupWindow(btnBig, LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT); mPopupWindowBig.showAtLocation(findViewById(R.id.main), Gravity.CENTER, 0, 0); btnSmall = new ImageButton(mContext); btnSmall.setImageResource(R.drawable.small); btnSmall.setOnClickListener(new OnClickListener() { public void onClick(View v) { // TODO Auto-generated method stub setTitle("small"); } }); mPopupWindowSmall = new PopupWindow(btnSmall, LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT); mPopupWindowSmall.showAtLocation(findViewById(R.id.main), Gravity.CENTER, 60, 0); } }); Button hide = (Button) findViewById(R.id.btn1); hide.setOnClickListener(new OnClickListener() { public void onClick(View v) { mPopupWindowSmall.dismiss(); mPopupWindowBig.dismiss(); } }); } } |