toast插件，在非UI主线程运行，解决在后台无法提示的问题

ecoolper · 发表于 2019-9-3 21:44:18

覆盖java文件：/Native/plugins/cordova-plugin-x-toast/src/android/nl/xservices/plugins/Toast.java

package nl.xservices.plugins;
import android.graphics.Color;
import android.graphics.drawable.GradientDrawable;
import android.os.Build;
import android.view.Gravity;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import org.apache.cordova.CallbackContext;
import org.apache.cordova.CordovaPlugin;
import org.apache.cordova.PluginResult;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.lang.Thread;
import java.lang.Runnable;
import android.os.Handler;
import android.os.Looper;
/*
// TODO nice way for the Toast plugin to offer a longer delay than the default short and long options
// TODO also look at https://github.com/JohnPersano/Supertoasts
new CountDownTimer(6000, 1000) {
public void onTick(long millisUntilFinished) {toast.show();}
public void onFinish() {toast.show();}
}.start();
Also, check https://github.com/JohnPersano/SuperToasts
*/
public class Toast extends CordovaPlugin {
private static final String ACTION_SHOW_EVENT = "show";
private static final String ACTION_HIDE_EVENT = "hide";
private static final int GRAVITY_TOP = Gravity.TOP|Gravity.CENTER_HORIZONTAL;
private static final int GRAVITY_CENTER = Gravity.CENTER_VERTICAL|Gravity.CENTER_HORIZONTAL;
private static final int GRAVITY_BOTTOM = Gravity.BOTTOM|Gravity.CENTER_HORIZONTAL;
private static final int BASE_TOP_BOTTOM_OFFSET = 20;
private android.widget.Toast mostRecentToast;
private ViewGroup viewGroup;
private static final boolean IS_AT_LEAST_LOLLIPOP = Build.VERSION.SDK_INT >= 21;
// note that webView.isPaused() is not Xwalk compatible, so tracking it poor-man style
private boolean isPaused;
@Override
public boolean execute(String action, JSONArray args, final CallbackContext callbackContext) throws JSONException {
if (ACTION_HIDE_EVENT.equals(action)) {
if (mostRecentToast != null) {
mostRecentToast.cancel();
getViewGroup().setOnTouchListener(null);
}
callbackContext.success();
return true;
} else if (ACTION_SHOW_EVENT.equals(action)) {
if (this.isPaused) {
return true;
}
final JSONObject options = args.getJSONObject(0);
final String message = options.getString("message");
final String duration = options.getString("duration");
final String position = options.getString("position");
final int addPixelsY = options.has("addPixelsY") ? options.getInt("addPixelsY") : 0;
final JSONObject data = options.has("data") ? options.getJSONObject("data") : null;
final JSONObject styling = options.optJSONObject("styling");
//wjw:20190830修改，支持toast可以在后台使用
new Thread(){
@Override
public void run(){
// Looper.prepare();
new Handler(Looper.getMainLooper()).post(new Runnable() {
@Override
public void run() {
final android.widget.Toast toast = android.widget.Toast.makeText(
IS_AT_LEAST_LOLLIPOP ? cordova.getActivity().getWindow().getContext() : cordova.getActivity().getApplicationContext(),
message,
"short".equals(duration) ? android.widget.Toast.LENGTH_SHORT : android.widget.Toast.LENGTH_LONG);
if ("top".equals(position)) {
toast.setGravity(GRAVITY_TOP, 0, BASE_TOP_BOTTOM_OFFSET + addPixelsY);
} else if ("bottom".equals(position)) {
toast.setGravity(GRAVITY_BOTTOM, 0, BASE_TOP_BOTTOM_OFFSET - addPixelsY);
} else if ("center".equals(position)) {
toast.setGravity(GRAVITY_CENTER, 0, addPixelsY);
} else {
callbackContext.error("invalid position. valid options are 'top', 'center' and 'bottom'");
return;
}
// if one of the custom layout options have been passed in, draw our own shape
if (styling != null && Build.VERSION.SDK_INT >= 16) {
// the defaults mimic the default toast as close as possible
final String backgroundColor = styling.optString("backgroundColor", "#333333");
final double opacity = styling.optDouble("opacity", 0.8);
final int cornerRadius = styling.optInt("cornerRadius", 100);
final int horizontalPadding = styling.optInt("horizontalPadding", 50);
final int verticalPadding = styling.optInt("verticalPadding", 30);
GradientDrawable shape = new GradientDrawable();
shape.setCornerRadius(cornerRadius);
shape.setAlpha((int)(opacity * 255)); // 0-255, where 0 is an invisible background
shape.setColor(Color.parseColor(backgroundColor));
toast.getView().setBackground(shape);
toast.getView().setPadding(horizontalPadding, verticalPadding, horizontalPadding, verticalPadding);
// this gives the toast a very subtle shadow on newer devices
if (Build.VERSION.SDK_INT >= 21) {
toast.getView().setElevation(6);
}
}
// On Android >= 5 you can no longer rely on the 'toast.getView().setOnTouchListener',
// so created something funky that compares the Toast position to the tap coordinates.
if (IS_AT_LEAST_LOLLIPOP) {
getViewGroup().setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View view, MotionEvent motionEvent) {
if (motionEvent.getAction() != MotionEvent.ACTION_DOWN) {
return false;
}
if (mostRecentToast == null || !mostRecentToast.getView().isShown()) {
getViewGroup().setOnTouchListener(null);
return false;
}
float w = mostRecentToast.getView().getWidth();
float startX = (view.getWidth() / 2) - (w / 2);
float endX = (view.getWidth() / 2) + (w / 2);
float startY;
float endY;
float g = mostRecentToast.getGravity();
float y = mostRecentToast.getYOffset();
float h = mostRecentToast.getView().getHeight();
if (g == GRAVITY_BOTTOM) {
startY = view.getHeight() - y - h;
endY = view.getHeight() - y;
} else if (g == GRAVITY_CENTER) {
startY = (view.getHeight() / 2) + y - (h / 2);
endY = (view.getHeight() / 2) + y + (h / 2);
} else {
// top
startY = y;
endY = y + h;
}
float tapX = motionEvent.getX();
float tapY = motionEvent.getY();
final boolean tapped = tapX >= startX && tapX <= endX &&
tapY >= startY && tapY <= endY;
if (tapped) {
getViewGroup().setOnTouchListener(null);
return returnTapEvent(message, data, callbackContext);
}
return false;
}
});
} else {
toast.getView().setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View view, MotionEvent motionEvent) {
return motionEvent.getAction() == MotionEvent.ACTION_DOWN && returnTapEvent(message, data, callbackContext);
}
});
}
toast.show();
mostRecentToast = toast;
PluginResult pr = new PluginResult(PluginResult.Status.OK);
pr.setKeepCallback(true);
callbackContext.sendPluginResult(pr);
}
});
}
}.start();
return true;
} else {
callbackContext.error("toast." + action + " is not a supported function. Did you mean '" + ACTION_SHOW_EVENT + "'?");
return false;
}
}
private boolean returnTapEvent(String message, JSONObject data, CallbackContext callbackContext) {
final JSONObject json = new JSONObject();
try {
json.put("event", "touch");
json.put("message", message);
json.put("data", data);
} catch (JSONException e) {
e.printStackTrace();
}
callbackContext.success(json);
return true;
}
// lazy init and caching
private ViewGroup getViewGroup() {
if (viewGroup == null) {
viewGroup = (ViewGroup) ((ViewGroup) cordova.getActivity().findViewById(android.R.id.content)).getChildAt(0);
}
return viewGroup;
}
@Override
public void onPause(boolean multitasking) {
if (mostRecentToast != null) {
mostRecentToast.cancel();
getViewGroup().setOnTouchListener(null);
}
this.isPaused = true;
}
@Override
public void onResume(boolean multitasking) {
this.isPaused = false;
}
}

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