27
2017
09

项目总结-重写activity中的onNewIntent 方法

//1,重写activityA中的onNewIntent 方法; 2,把此activityA设置为android:exported=”true” android:launchMode=”singleTask”

  @Override
    protected void onNewIntent(Intent intent) {
        super.onNewIntent(intent);
        int code = intent.getIntExtra("code", -1);
        System.out.println("code:="+code);
        if (code != 100) {
            return;
        }
        imagePathList.remove(imagePathList.size() - 1);
        ArrayList<String> paths = intent.getStringArrayListExtra("paths");
        System.out.println("paths:="+paths.get(0));
        //添加,去重
        boolean hasUpdate = false;
        for (String path : paths) {
            if (!imagePathList.contains(path)) {
                //最多9张
                if (imagePathList.size() == 2) {
                    toast("最多可上传2张图片。");
                    break;
                }
                imagePathList.add(path);
                hasUpdate = true;
            }
        }
        imagePathList.add(path);
        if (hasUpdate) {
            adapter.notifyDataSetChanged();
        }
    }

3,在activityB的中操作后,在activityA中会得到ActivityB传过来的数据

if (from.equals("feedback")){
                    intent.setClass(activityA.this, activityB.class);
                }
                System.out.println("paths1:="+paths);
                intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
                intent.putExtra("code", paths != null ? 100 : 101);
                intent.putStringArrayListExtra("paths", paths);
                startActivity(intent);
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