功能
1、顯示加載視圖，加載失敗的時候顯示加載失敗視圖，數(shù)據(jù)為空時顯示數(shù)據(jù)為空視圖，支持為失敗視圖設置點擊事件重新加載數(shù)據(jù)。
2、支持個性化設置，自定義設置 加載、失敗、空數(shù)據(jù)視圖。
先放一張效果圖壓壓驚
實現(xiàn)
實現(xiàn)思路其實就是一個FrameLayout里添加三個布局做處理顯示隱藏，自定義視圖其實就是替換里面的view ,代碼比較簡單，如果直接看過我的自定義view系列文章，或者對自定義view有所了解，都很容易看懂，所有直接上代碼了。
具體代碼
Java 代碼
public class CommonLoadingView extends FrameLayout { //加載時顯示文字 protected TextView mLoadingTextTv; public Context mContext; //加載錯誤視圖 protected LinearLayout mLoadErrorLl; //加載錯誤點擊事件處理 private LoadingHandler mLoadingHandler; //加載view private View loadingView; //加載失敗view private View loadingErrorView; //數(shù)據(jù)為空 private View emptyView; public CommonLoadingView(Context context, AttributeSet attrs) { this(context, attrs, 0); } public CommonLoadingView(Context context, AttributeSet attrs, int defStyleAttr) { super(context, attrs, defStyleAttr); mContext = context; } public void setLoadingHandler(LoadingHandler loadingHandler) { mLoadingHandler = loadingHandler; } public void setLoadingErrorView(View loadingErrorView) { this.removeViewAt(1); this.loadingErrorView = loadingErrorView; this.loadingErrorView.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { if (mLoadingHandler != null) { mLoadingHandler.doRequestData(); CommonLoadingView.this.load(); } } }); this.addView(loadingErrorView,1); } public void setLoadingView(View loadingView) { this.removeViewAt(0); this.loadingView = loadingView; this.addView(loadingView,0); } @Override protected void onFinishInflate() { super.onFinishInflate(); loadingView = inflate(mContext, R.layout.common_loading_view, null); loadingErrorView = inflate(mContext, R.layout.network_layout, null); emptyView = inflate(mContext, R.layout.empty_layout, null); this.addView(loadingView); this.addView(loadingErrorView); this.addView(emptyView); loadingErrorView.setVisibility(GONE); emptyView.setVisibility(GONE); initView(this); } public void setMessage(String message) { mLoadingTextTv.setText(message); } private void initView(View rootView) { mLoadingTextTv = (TextView) rootView.findViewById(R.id.loading_text_tv); mLoadErrorLl = (LinearLayout) rootView.findViewById(R.id.load_error_ll); mLoadErrorLl.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { if (mLoadingHandler != null) { CommonLoadingView.this.load(); mLoadingHandler.doRequestData(); } } }); } public void load(){ loadingView.setVisibility(VISIBLE); loadingErrorView.setVisibility(GONE); emptyView.setVisibility(GONE); } public void load(String message){ mLoadingTextTv.setText(message); loadingView.setVisibility(VISIBLE); loadingErrorView.setVisibility(GONE); emptyView.setVisibility(GONE); } public void loadSuccess(){ this.loadSuccess(false); } public void loadSuccess(boolean isEmpty){ loadingView.setVisibility(GONE); loadingErrorView.setVisibility(GONE); if (isEmpty) { emptyView.setVisibility(VISIBLE); }else{ emptyView.setVisibility(GONE); } } public void loadError(){ loadingView.setVisibility(GONE); loadingErrorView.setVisibility(VISIBLE); } public interface LoadingHandler{ void doRequestData(); }}使用
基本使用
幾個基本的 load loadError loadSucccess方法的使用。
public class DefaultViewActivity extends AppCompatActivity { protected ListView mListView; protected CommonLoadingView mLoadingView; private List<String> mList = new ArrayList<>(); ArrayAdapter adapter; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); super.setContentView(R.layout.activity_default_view); initView(); } private void initView() { mListView = (ListView) findViewById(R.id.listView); mLoadingView = (CommonLoadingView) findViewById(R.id.loadingView); mLoadingView.load(); //設置點擊錯誤視圖重新加載事件 mLoadingView.setLoadingHandler(new CommonLoadingView.LoadingHandler() { @Override public void doRequestData() { mLoadingView.postDelayed(new Runnable() { @Override public void run() { for (int i = 1; i <=20 ; i++) { mList.add(i+""); } adapter = new ArrayAdapter(DefaultViewActivity.this, android.R.layout.simple_list_item_1, android.R.id.text1, mList); mListView.setAdapter(adapter); mLoadingView.loadSuccess(false); } },2500); } }); //模擬網絡錯誤，加載失敗 mLoadingView.postDelayed(new Runnable() { @Override public void run() { mLoadingView.loadError(); } },2500); }}自定義視圖 使用
只需要把自己自定義的view調用set方法設置進去即可。
this.mLoadingView.setLoadingView(loadingView);this.mLoadingView.setLoadingErrorView(loadingErrorView);
public class CustomViewActivity extends AppCompatActivity { protected ListView mListView; protected CommonLoadingView mLoadingView; private List<String> mList = new ArrayList<>(); ArrayAdapter adapter; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); super.setContentView(R.layout.activity_default_view); initView(); } private void initView() { mListView = (ListView) findViewById(R.id.listView); mLoadingView = (CommonLoadingView) findViewById(R.id.loadingView); //設置自定義視圖 ProgressBar progressBar = new ProgressBar(this); this.mLoadingView.setLoadingView(progressBar); TextView textView = new TextView(this); textView.setText("加載失敗..."); this.mLoadingView.setLoadingErrorView(textView); mLoadingView.load(); //設置點擊錯誤視圖重新加載事件 mLoadingView.setLoadingHandler(new CommonLoadingView.LoadingHandler() { @Override public void doRequestData() { mLoadingView.postDelayed(new Runnable() { @Override public void run() { for (int i = 1; i <=20 ; i++) { mList.add(i+""); } adapter = new ArrayAdapter(CustomViewActivity.this, android.R.layout.simple_list_item_1, android.R.id.text1, mList); mListView.setAdapter(adapter); mLoadingView.loadSuccess(false); } },2500); } }); //模擬網絡錯誤，加載失敗 mLoadingView.postDelayed(new Runnable() { @Override public void run() { mLoadingView.loadError(); } },2500); }}至于具體的布局和樣式文件就不貼了，主要是實現(xiàn)思路，代碼
下載請參考源碼下載 。
以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支持武林網。
新聞熱點
疑難解答
圖片精選
