本文實例講述了Android編程實現仿QQ發表說說，上傳照片及彈出框效果。分享給大家供大家參考，具體如下：
代碼很簡單,主要就是幾個動畫而已,圖標什么的就隨便找了幾個,效果圖:
動畫說明:
1.點擊右上角按鈕,菜單從頂部下拉彈出,同時背景變暗;
2.再次點擊右上角按鈕,點擊返回鍵,或者點擊空白區域(也就是變暗的部分),菜單向上收回;
3.點擊菜單上的按鈕響應事件,同時菜單收回(效果同2)
重要說明：動畫結束后必須clearAnimation，否則隱藏狀態的view依然能響應點擊事件
主體代碼:
public class MainActivity extends Activity { //添加數據按鈕 private ImageView addDataIv; //下拉功能菜單 private LinearLayout dropDownView; private View bgView; //當前下拉菜單是否為顯示狀態 private boolean showItems = false; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); addDataIv = (ImageView) findViewById(R.id.main_newData); dropDownView = (LinearLayout) findViewById(R.id.dropDownView); bgView = findViewById(R.id.main_bg); addDataIv.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { if (!showItems) { showView(); } else { dismissView(); } } }); //點擊空白隱藏彈出框 bgView.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { if (showItems) { dismissView(); } } }); //下拉功能菜單上按鈕的點擊事件 View.OnClickListener l = new OnClickImpl(); findViewById(R.id.dropDown_item1).setOnClickListener(l); findViewById(R.id.dropDown_item2).setOnClickListener(l); findViewById(R.id.dropDown_item3).setOnClickListener(l); findViewById(R.id.dropDown_item4).setOnClickListener(l); } //顯示下拉菜單 private void showView() { showItems = true; addDataIv.startAnimation(AnimationUtils.loadAnimation(MainActivity.this, R.anim.rotate_open)); dropDownView.startAnimation(AnimationUtils.loadAnimation(this, R.anim.drop_down)); dropDownView.setVisibility(View.VISIBLE); bgView.startAnimation(AnimationUtils.loadAnimation(MainActivity.this, R.anim.fade_dark)); bgView.setVisibility(View.VISIBLE); } //隱藏下拉菜單 private void dismissView() { showItems = false; addDataIv.startAnimation(AnimationUtils.loadAnimation(MainActivity.this, R.anim.rotate_close)); Animation dropUpAnim = AnimationUtils.loadAnimation(this, R.anim.drop_up); dropUpAnim.setAnimationListener(new AnimListenerImpl(dropDownView)); dropDownView.startAnimation(dropUpAnim); dropDownView.setVisibility(View.INVISIBLE); Animation fadeLightAnim = AnimationUtils.loadAnimation(MainActivity.this, R.anim.fade_light); fadeLightAnim.setAnimationListener(new AnimListenerImpl(bgView)); bgView.startAnimation(fadeLightAnim); bgView.setVisibility(View.INVISIBLE); } //點擊返回鍵時，如果下拉菜單是顯示狀態，則隱藏它 @Override public void onBackPressed() { if (showItems) { dismissView(); return; } super.onBackPressed(); } private class OnClickImpl implements View.OnClickListener { @Override public void onClick(View v) { if (!showItems) { return; } int id = v.getId(); switch (id) { case R.id.dropDown_item1: Toast.makeText(MainActivity.this, "item1 onClick", Toast.LENGTH_SHORT).show(); dismissView(); break; case R.id.dropDown_item2: Toast.makeText(MainActivity.this, "item2 onClick", Toast.LENGTH_SHORT).show(); dismissView(); break; case R.id.dropDown_item3: Toast.makeText(MainActivity.this, "item3 onClick", Toast.LENGTH_SHORT).show(); dismissView(); break; case R.id.dropDown_item4: Toast.makeText(MainActivity.this, "item4 onClick", Toast.LENGTH_SHORT).show(); dismissView(); break; default: break; } } } //動畫結束后必須clearAnimation，否則隱藏狀態的view依然能響應點擊事件 private class AnimListenerImpl implements Animation.AnimationListener { private View view; public AnimListenerImpl(View view) { this.view = view; } @Override public void onAnimationStart(Animation animation) { } @Override public void onAnimationEnd(Animation animation) { view.clearAnimation(); } @Override public void onAnimationRepeat(Animation animation) { } }}完整實例代碼點擊此處本站下載。
更多關于Android相關內容感興趣的讀者可查看本站專題：《Android開發動畫技巧匯總》、《Android編程之activity操作技巧總結》、《Android視圖View技巧總結》、《Android布局layout技巧總結》、《Android開發入門與進階教程》、《Android資源操作技巧匯總》及《Android控件用法總結》
希望本文所述對大家Android程序設計有所幫助。
新聞熱點
疑難解答
