Android Question how to call b4a sub in inline java code?

Maodge · Apr 19, 2021

hello,

I used two b4a classes converted from Java code.
one is "DownloadConfirmHelp" . The other is “DownloadApkConfirmDialogWebView”
In DownloadConfirmHelp, inline java code,
new DownloadApkConfirmDialogWebView(context, infoUrl, callBack).show()

and In DownloadApkConfirmDialogWebView, I create 2 subs
Public Sub Initialize(Context As JavaObject,infoUrl As String,callBack As JavaObject)
Public Sub show
how to call these 2 b4a sub in DownloadConfirmHelp inline java code?
Thanks!

DownloadConfirmHelp code

B4X:

Sub Class_Globals

    Private nativeMe As JavaObject
    Private jo1 As JavaObject
   
    Public const TAG As  String  = "DownloadConfirmHelper"

    Private const JSON_INFO_PARAMETER As   String  = "&resType=api"

End Sub

'Initializes the object. You can add parameters to this method if needed.
Public Sub Initialize
    nativeMe = Me
    jo1 = nativeMe.RunMethod("DownloadConfirmHelper", Null)
End Sub

Public Sub DOWNLOAD_CONFIRM_LISTENER As JavaObject  'DownloadConfirmListener
    Return jo1.RunMethod("DOWNLOAD_CONFIRM_LISTENER",Null)
End Sub

#if java

import android.app.Activity;
import android.os.AsyncTask;
import android.text.TextUtils;
import android.util.Log;

import com.qq.e.comm.compliance.DownloadConfirmCallBack;
import com.qq.e.comm.compliance.DownloadConfirmListener;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

/*
* created by timfeng 2021/2/2
*/
public class DownloadConfirmHelper {

  public static final DownloadConfirmListener DOWNLOAD_CONFIRM_LISTENER =
      new DownloadConfirmListener() {

        @Override
        public void onDownloadConfirm(Activity context, int scenes, String infoUrl,
                                      DownloadConfirmCallBack callBack) {
         // Log.d(TAG, "scenes:" + scenes + " info url:" + infoUrl);

          //获取对应的json数据并自定义显示
          //new DownloadApkConfirmDialog(context, getApkJsonInfoUrl(infoUrl), callBack).show();

          new DownloadApkConfirmDialogWebView(context, infoUrl, callBack).show();//使用webview显示
        }
      };

  public static String getApkJsonInfoUrl(String infoUrl) {
    return infoUrl + JSON_INFO_PARAMETER;
  }
}

#End If

DownloadApkConfirmDialogWebView code

B4X:

Sub Class_Globals
    Private nativeMe As JavaObject
    Private jo1 As JavaObject
End Sub

'Initializes the object. You can add parameters to this method if needed.
Public Sub Initialize(Context As JavaObject,infoUrl As String,callBack As JavaObject)
    nativeMe = Me
    jo1 = nativeMe.RunMethod("DownloadApkConfirmDialogWebView", Array(Context, infoUrl,callBack))
End Sub

Public Sub show
    jo1.RunMethod("show",Null)
End Sub

#if java

import android.app.Dialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.res.Configuration;
import android.text.TextUtils;
import android.util.Log;
import android.view.Gravity;
import android.view.View;
import android.view.ViewGroup;
import android.view.Window;
import android.view.WindowManager;
import android.webkit.WebResourceError;
import android.webkit.WebResourceRequest;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.Button;
import android.widget.FrameLayout;
import android.widget.ImageView;
import android.widget.ProgressBar;
import android.widget.TextView;

import com.qq.e.comm.compliance.DownloadConfirmCallBack;
import com.qq.e.union.demo.R;


/*
* created by timfeng 2020/8/21
*/
public class DownloadApkConfirmDialogWebView extends Dialog implements View.OnClickListener {
  private static final String TAG = "ConfirmDialogWebView";
  private Context context;
  private int orientation;
  private DownloadConfirmCallBack callBack;
  private WebView webView;
  private ImageView close;
  private Button confirm;

  private ViewGroup contentHolder;
  private ProgressBar loadingBar;
  private Button reloadButton;

  private String url;
  private boolean urlLoadError = false;

  private static final String RELOAD_TEXT = "重新加载";
  private static final String LOAD_ERROR_TEXT = "抱歉，应用信息获取失败";

  public DownloadApkConfirmDialogWebView(Context context, String infoUrl,
                                         DownloadConfirmCallBack callBack) {
    super(context, R.style.DownloadConfirmDialogFullScreen);//需要全屏显示，同时显示非窗口蒙版
    this.context = context;
    this.callBack = callBack;
    this.url = infoUrl;
    orientation = context.getResources().getConfiguration().orientation;
    requestWindowFeature(Window.FEATURE_NO_TITLE);
    setCanceledOnTouchOutside(true);
    initView();
  }

  private void initView() {
    setContentView(R.layout.download_confirm_dialog);
    View root = findViewById(R.id.download_confirm_root);
    if (orientation == Configuration.ORIENTATION_PORTRAIT) {
      root.setBackgroundResource(R.drawable.download_confirm_background_portrait);
    } else if (orientation == Configuration.ORIENTATION_LANDSCAPE) {
      root.setBackgroundResource(R.drawable.download_confirm_background_landscape);
    }
    close = findViewById(R.id.download_confirm_close);
    close.setOnClickListener(this);
    reloadButton = findViewById(R.id.download_confirm_reload_button);
    reloadButton.setOnClickListener(this);
    confirm = findViewById(R.id.download_confirm_confirm);
    confirm.setOnClickListener(this);
    loadingBar = findViewById(R.id.download_confirm_progress_bar);
    contentHolder = findViewById(R.id.download_confirm_content);
    createTextView();
  }

  private void createTextView(){
    FrameLayout layout = findViewById(R.id.download_confirm_holder);
    webView = new WebView(context);
    webView.getSettings().setJavaScriptEnabled(true);
    webView.setWebViewClient(new Client());
    layout.addView(webView);
  }
  @Override
  public void show() {
    super.show();
    try {
      loadUrl(url);
    } catch (Exception e) {
      Log.e(DownloadApkConfirmDialogWebView.TAG, "load error url:" + url, e);
    }
  }


  private void loadUrl(String url) {
    if (TextUtils.isEmpty(url)) {
      loadingBar.setVisibility(View.GONE);
      contentHolder.setVisibility(View.GONE);
      reloadButton.setVisibility(View.VISIBLE);
      reloadButton.setText(LOAD_ERROR_TEXT);
      reloadButton.setEnabled(false);
      return;
    }
    urlLoadError = false;
    Log.d(TAG, "download confirm load url:" + url);
    webView.loadUrl(url);
  }

  @Override
  protected void onStart() {
   int height = getDeviceHeightInPixel(context);
   int width = getDeviceWidthInPixel(context);
    Window window = getWindow();
    window.getDecorView().setPadding(0, 0, 0, 0);
    WindowManager.LayoutParams layoutParams = window.getAttributes();
    if (orientation == Configuration.ORIENTATION_PORTRAIT) {
      layoutParams.width = WindowManager.LayoutParams.MATCH_PARENT;
      layoutParams.height = (int) (height * 0.6);
      layoutParams.gravity = Gravity.BOTTOM;
      layoutParams.windowAnimations = R.style.DownloadConfirmDialogAnimationUp;
    } else if (orientation == Configuration.ORIENTATION_LANDSCAPE) {
      layoutParams.width = (int) (width * 0.5);
      layoutParams.height = WindowManager.LayoutParams.MATCH_PARENT;
      layoutParams.gravity = Gravity.RIGHT;
      layoutParams.windowAnimations = R.style.DownloadConfirmDialogAnimationRight;
    }
    //弹窗外区域蒙版50%透明度
    layoutParams.dimAmount = 0.5f;

    //resume后动画会重复，在显示出来后重置无动画
    window.setAttributes(layoutParams);
    setOnShowListener(new OnShowListener() {
      @Override
      public void onShow(DialogInterface dialog) {
        try {
          Window window = getWindow();
          window.setWindowAnimations(0);
        } catch (Throwable t) {
        }
      }
    });
  }

  @Override
  public void onClick(View v) {
    if (v == close) {
      if (callBack != null) {
        callBack.onCancel();
      }
      dismiss();
    } else if (v == confirm) {
      if (callBack != null) {
        callBack.onConfirm();
      }
      dismiss();
    } else if (v == reloadButton) {
      loadUrl(url);
    }

  }

  @Override
  public void cancel() {
    super.cancel();
    if (callBack != null) {
      callBack.onCancel();
    }
  }

  class Client extends WebViewClient {
    @Override
    public void onPageFinished(WebView view, String url) {
      super.onPageFinished(view, url);
      if (!urlLoadError) {
        loadingBar.setVisibility(View.GONE);
        reloadButton.setVisibility(View.GONE);
        contentHolder.setVisibility(View.VISIBLE);
      }
    }

    @Override
    public void onReceivedError(WebView view, WebResourceRequest request, WebResourceError error) {
      super.onReceivedError(view, request, error);
      Log.d(TAG, "doConfirmWithInfo onReceivedError:" + error + " " + request);
      urlLoadError = true;
      loadingBar.setVisibility(View.GONE);
      contentHolder.setVisibility(View.GONE);
      reloadButton.setVisibility(View.VISIBLE);
      reloadButton.setText(RELOAD_TEXT);
      reloadButton.setEnabled(true);
    }
  }


}

#End If



#if java
import android.content.Context;
import android.content.res.Resources;
import android.util.DisplayMetrics;
import android.util.TypedValue;

//Public class PxUtils {

/*
* Public static int dpToPx(Context context, int dp) {
*    Resources r = context.getApplicationContext().getResources();
*    float px = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dp, r.getDisplayMetrics());
*    Return (int) px;
* }

* Public static int pxToDp(Context context, int px) {
*   float scale = context.getApplicationContext().getResources().getDisplayMetrics().density;
  *  return (int) (px / scale + 0.5f);
* }
*/

  public static int getDeviceWidthInPixel(Context context) {
    DisplayMetrics dm = context.getApplicationContext().getResources().getDisplayMetrics();
    return dm.widthPixels;
  }

  public static int getDeviceHeightInPixel(Context context) {
    DisplayMetrics dm = context.getApplicationContext().getResources().getDisplayMetrics();
    return dm.heightPixels;
  }
//}
#End If

Android Question how to call b4a sub in inline java code?

Maodge

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