华为Scan Kit二维码扫描 默认的 视图图标文字不能更改，改动成custom 需要改动太多，目前仅是想改动顶部提示问题和打开去除打开图库按钮。
image.png
思路
1.构建新的操作的Activity继承ScanKitActivity
2.获取显示视图的View
3.遍历显示视图的View 的子view 找到显示控件的地方
4.更改显示内容。
1.ScanKitActivity源码分析
public class ScanKitActivity extends Activity {
private RemoteView remoteView;
private ImageView backBtn;
private static final String TAG = "ScanKitActivity";
protected void onCreate(Bundle var1) {
super.onCreate(var1);
this.requestWindowFeature(1);
this.setContentView(layout.scankit_layout);
int var2 = 0;
try {
if (this.getIntent() != null) {
var2 = this.getIntent().getIntExtra("ScanFormatValue", 0);
}
} catch (NullPointerException var6) {
a.b("ScanKitActivity", "getIntExtra can not get");
}
this.remoteView = new RemoteView(this, false, var2, (Rect)null);
this.remoteView.onCreate(var1);
ViewGroup var3 = (ViewGroup)this.findViewById(id.ll_top);
var3.addView(this.remoteView);
........
}
RemoteView 动态添加到Activity视图中，所需要改动的在RemoteView 中。
2.实践
public class ScanByHWActivity extends ScanKitActivity {
RemoteView remoteViewCurrent;
static String TAG = "ScanByHWActivity";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
initview();
}
private void initview() {
ViewGroup var3 = (ViewGroup) this.findViewById(R.id.ll_top);
for (int i = 0; i < var3.getChildCount(); i++) {
View v = var3.getChildAt(i);
if (v instanceof RemoteView) {
remoteViewCurrent = (RemoteView) v;
break;
}
}
if (remoteViewCurrent != null) {
printView(remoteViewCurrent);
}
}
private void printView(ViewGroup viewGroup) {
for (int i = 0; i < viewGroup.getChildCount(); i++) {
View v = viewGroup.getChildAt(i);
if (v instanceof ViewGroup) {
Log.e(TAG, "printView:--viewgroup " + v.getClass().getSimpleName());
printView((ViewGroup) v);
} else {
Log.e(TAG, "printView:- " + v.getClass().getSimpleName());
}
}
}
}
先打印所有的子元素
实际输出：
E/ScanByHWActivity: printView:--viewgroup ProviderRemoteView
E/ScanByHWActivity: printView:--viewgroup FrameLayout
E/ScanByHWActivity: printView:- SurfaceView
E/ScanByHWActivity: printView:- ViewfinderView
E/ScanByHWActivity: printView:--viewgroup RelativeLayout
E/ScanByHWActivity: printView:- TextView
E/ScanByHWActivity: printView:- ImageView
E/ScanByHWActivity: printView:- ImageView
E/ScanByHWActivity: printView:--viewgroup LinearLayout
E/ScanByHWActivity: printView:- ImageView
E/ScanByHWActivity: printView:- TextView
一看就知道 可以操作
debug 操作之后，成功拿到上面如图的id
android.widget.TextView{3a0914f V.ED..... ......ID 0,0-0,0 #7f090696 app:id/title_scan}
android.widget.ImageView{8834d7d V.ED..... ......I. 0,0-0,0 #7f090047 app:id/back_img_in}
android.widget.ImageView{740ae22 V.ED..C.. ......I. 0,0-0,0 #7f090230 app:id/img_btn}
android.widget.ImageView{a54e3d2 V.ED..C.. ......ID 0,0-0,0 #7f090258 app:id/ivFlash}
android.widget.TextView{1608493 V.ED..... ......ID 0,0-0,0 #7f0901e7 app:id/flash_light_text}
是不是有点不对？明明有三处文字怎么三个图标怎么只有2个textview
继续研究发现 中间展示的文字是在 ViewfinderView里。
image.png
并且没有暴露方法，对外修改，混淆后的代码，反射有难度，
检查了下源码
image.png
scankit_scan_tip 字段，那就强制本地编译用的修改掉，缺点 重新换电脑拉取编译就又回去了。
image.png
上图就是修改后的。
至此 隐藏图库入口就简单了：不显示扫码title 和图库入口
if (remoteViewCurrent != null) {
TextView textView = remoteViewCurrent.findViewById(R.id.title_scan);
ImageView img = remoteViewCurrent.findViewById(R.id.img_btn);
textView.setText("");
img.setVisibility(View.GONE);
}
image.png
