日工作總結
1.根據接口獲取數據是否爲空,對獲取集合元素是否爲空進行判斷
代碼如下
private void getIndex() {
String ua = PermissionUtil.getInstance().getImei(activity);
String version = activity.getResources().getString(R.string.version_name);
action.getIndex(activity, ua, version, new ActionCallbackListener() {
@Override
public void onSuccess(IndexBean data) {//註釋:data.getArticles().size()是對接口獲取的數組數據進行判斷.size()是否爲空,爲空的話setText("XX"),否則獲取接口獲取的數據. if (data.getArticles().size()==0){ tv_announce.setText("無數據"); }else { tv_announce.setText(data.getArticles().get(0).getTitle()); } //註釋:獲取Bean中數據進行數據展示 List<OptimizationProductsBean> list = new ArrayList<>(); for (int i = 0; i < data.getOptimizationProducts().size(); i++) { data.getOptimizationProducts().get(i).getImageUrl(); list.add(data.getOptimizationProducts().get(i)); } FavorAdapter adapter = new FavorAdapter(activity, list); lv_favor.setAdapter(adapter); //註釋:根據listview的item個數,動態設置listview的高度 setListViewHeightBasedOnChildren(lv_favor); @Override public void onFailure(int errorCode, String message) { RequestBackCodeUtil.getInstance().handle(activity, errorCode, message); } });- 2.根據item數動態設定ListView的高度
//註釋:此方法在setAdapter之後調用,子ListView的每個Item必須是LinearLayout，不能是其他的，因爲其他的Layout(如RelativeLayout)沒有重寫onMeasure()，所以會在onMeasure()時拋出異常。
public static void setListViewHeightBasedOnChildren(ListView listView) { ListAdapter listAdapter = listView.getAdapter(); if (listAdapter == null) { return; } int totalHeight = 0; for (int i = 0; i < listAdapter.getCount(); i++) { View listItem = listAdapter.getView(i, null, listView); listItem.measure(0, 0); totalHeight += listItem.getMeasuredHeight(); } ViewGroup.LayoutParams params = listView.getLayoutParams(); params.height = totalHeight + (listView.getDividerHeight() * (listAdapter.getCount() - 1)); listView.setLayoutParams(params); }3.activity向Fragment傳值
//註釋:在activity中創建方法,便於在Fragment中取值
public AppAction getAppAction(){
return appAction;
}
public MyApplication application(){
return application;
}
//註釋:在Fragment中onAttach()方法中獲取activity傳來的值
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
aAction = ((PosterActivity) activity).getAppAction();
mApplication = ((PosterActivity) activity).getApplication();
}4.activity向Fragment傳值
獲取SharedPreferences的兩種方式: 1 調用Context對象的getSharedPreferences()方法 2 調用Activity對象的getPreferences()方法 兩種方式的區別: 調用Context對象的getSharedPreferences()方法獲得的SharedPreferences對象可以被同一應用程序下的其他組件共享. 調用Activity對象的getPreferences()方法獲得的SharedPreferences對象只能在該Activity中使用. SharedPreferences的四種操作模式: Context.MODE_PRIVATE Context.MODE_APPEND Context.MODE_WORLD_READABLE Context.MODE_WORLD_WRITEABLE Context.MODE_PRIVATE：爲默認操作模式,代表該文件是私有數據,只能被應用本身訪問,在該模式下,寫入的內容會覆蓋原文件的內容 Context.MODE_APPEND：模式會檢查文件是否存在,存在就往文件追加內容,否則就創建新文件. Context.MODE_WORLD_READABLE和Context.MODE_WORLD_WRITEABLE用來控制其他應用是否有權限讀寫該文件. MODE_WORLD_READABLE：表示當前文件可以被其他應用讀取. MODE_WORLD_WRITEABLE：表示當前文件可以被其他應用寫入. 將數據保存至SharedPreferences: SharedPreferences preferences=getSharedPreferences("user",Context.MODE_PRIVATE); Editor editor=preferences.edit(); String name="xixi"; String age="22"; editor.putString("name", name); editor.putString("age", age); editor.commit(); 從SharedPreferences獲取數據: SharedPreferences preferences=getSharedPreferences("user", Context.MODE_PRIVATE); String name=preferences.getString("name", "defaultname"); String age=preferences.getString("age", "0");5.android中自定義彈出框樣式
private void showDialog() { final Dialog dialog = new Dialog(AppointMentActivity.this, R.style.dialogTheme); //View dialogView = LayoutInflater.from(activity).inflate(R.layout.photo_select,null); View dialogView = LayoutInflater.from(AppointMentActivity.this).inflate(R.layout.dialog_yuyue,null); //獲得dialog的window窗口 Window window = dialog.getWindow(); //設置dialog在屏幕底部 window.setGravity(Gravity.CENTER); //設置dialog彈出時的動畫效果，從屏幕底部向上彈出 // window.setWindowAnimations(R.style.dialogStyle); window.getDecorView().setPadding(DensityUtil.dip2px(30), DensityUtil.dip2px(30), DensityUtil.dip2px(30), DensityUtil.dip2px(30)); //獲得window窗口的屬性 WindowManager.LayoutParams lp = window.getAttributes(); //設置窗口寬度爲充滿全屏 lp.width = DensityUtil.dip2px(300); //設置窗口高度爲包裹內容 // lp.height = WindowManager.LayoutParams.WRAP_CONTENT; lp.height = DensityUtil.dip2px(300); // 設置 dialog 高度 //將設置好的屬性set回去 window.setAttributes(lp); //將自定義佈局加載到dialog上 dialog.setContentView(dialogView); //dialog.setCanceledOnTouchOutside(false); // false 調用這個方法時，按對話框以外的地方不起作用。按返回鍵還起作用 dialog.setCanceledOnTouchOutside(true); MyTextView tv_confirm = dialogView.findViewById(R.id.tv_confirm); tv_confirm.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { dialog.dismiss(); } }); dialog.show(); }6.點擊提交進行數據校驗
//註釋:在調接口數據之前進行驗證 @Override public void onClick(View v) { switch (v.getId()){ case R.id.rl_subscribe: if(TextUtils.isEmpty(et_name.getText().toString())){ ToastUtil.show(AppointMentActivity.this,"請輸入姓名"); return; } //註釋:先爲匹配正則表達式 String nameFormula = "[\\u4e00-\\u9fa5a-zA-Z]{2,50}"; // 2-50字中英文姓名 if(!et_name.getText().toString().matches(nameFormula)){ ToastUtil.show(context,"請輸入2-50中文或是英文"); return; } if(TextUtils.isEmpty(et_phone.getText().toString()) || et_phone.getText().toString().length() != 11){ ToastUtil.show(AppointMentActivity.this,"手機號格式錯誤，請重新輸入"); return; } if(et_input.getText().toString().length() > 30){ ToastUtil.show(AppointMentActivity.this,"備註最多30個字"); return; } showDialog(); getAppointment(); break; case R.id.base_back: break; } super.onClick(v); }