Android 自定义通用的loadingview实现代码

public class CommonLoadingView extends FrameLayout {  //加载时显示文字  protected TextView mLoadingTextTv;  public Context mContext;  //加载错误视图  protected LinearLayout mLoadErrorLl;  //加载错误点击事件处理  private LoadingHandler mLoadingHandler;  //加载view  private View loadingView;  //加载失败view  private View loadingErrorView;  //数据为空  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();  }}

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();    //设置点击错误视图重新加载事件    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);      }    });    //模拟网络错误，加载失败    mLoadingView.postDelayed(new Runnable() {      @Override      public void run() {        mLoadingView.loadError();      }    },2500);  }}

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);    //设置自定义视图    ProgressBar progressBar = new ProgressBar(this);    this.mLoadingView.setLoadingView(progressBar);    TextView textView = new TextView(this);    textView.setText("加载失败...");    this.mLoadingView.setLoadingErrorView(textView);    mLoadingView.load();    //设置点击错误视图重新加载事件    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);      }    });    //模拟网络错误，加载失败    mLoadingView.postDelayed(new Runnable() {      @Override      public void run() {        mLoadingView.loadError();      }    },2500);  }}