Android 控件 - 悬浮常驻文本遮挡处理策略（问题复现、处理策略、FLAG_NOT_FOCUSABLE 的效果体现）

一、悬浮常驻文本遮挡问题复现

1、Service

• FloatingTextViewService.java

publicclassFloatingTextViewServiceextendsService{privateTextViewtvFloating;privateWindowManagerwindowManager;@Nullable@OverridepublicIBinderonBind(Intentintent){returnnull;}@OverridepublicvoidonCreate(){super.onCreate();windowManager=(WindowManager)getSystemService(WINDOW_SERVICE);// 创建布局参数WindowManager.LayoutParamsparams=newWindowManager.LayoutParams(WindowManager.LayoutParams.WRAP_CONTENT,WindowManager.LayoutParams.WRAP_CONTENT,Build.VERSION.SDK_INT>=Build.VERSION_CODES.O?WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY:WindowManager.LayoutParams.TYPE_PHONE,WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE,PixelFormat.TRANSLUCENT);// 设置位置为左下角params.gravity=Gravity.BOTTOM|Gravity.START;params.x=0;params.y=0;LayoutInflaterinflater=LayoutInflater.from(this);tvFloating=(TextView)inflater.inflate(R.layout.floating_text_view,null);tvFloating.setText("test content");// 添加到窗口windowManager.addView(tvFloating,params);}@OverridepublicvoidonDestroy(){super.onDestroy();if(tvFloating!=null){windowManager.removeView(tvFloating);}}}

• floating_text_view.xml

<?xml version="1.0" encoding="utf-8"?><TextViewxmlns:android="http://schemas.android.com/apk/res/android"android:id="@+id/tv_floating"android:layout_width="wrap_content"android:layout_height="wrap_content"android:padding="12dp"android:textSize="14sp"/>

2、Manifest

• AndroidManifest.xml

<uses-permissionandroid:name="android.permission.SYSTEM_ALERT_WINDOW"/><application>...<serviceandroid:name=".service.FloatingTextViewService"android:enabled="true"android:exported="false"/></application>

3、Activity Layout

• activity_floating_text_view_service.xml

<?xml version="1.0" encoding="utf-8"?><androidx.constraintlayout.widget.ConstraintLayoutxmlns:android="http://schemas.android.com/apk/res/android"xmlns:app="http://schemas.android.com/apk/res-auto"xmlns:tools="http://schemas.android.com/tools"android:id="@+id/main"android:layout_width="match_parent"android:layout_height="match_parent"tools:context=".FloatingTextViewServiceActivity"><Buttonandroid:id="@+id/btn_test"android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="test"app:layout_constraintBottom_toBottomOf="parent"app:layout_constraintStart_toStartOf="parent"/></androidx.constraintlayout.widget.ConstraintLayout>

4、Activity Code

• FloatingTextViewServiceActivity.java

publicclassFloatingTextViewServiceActivityextendsAppCompatActivity{privatestaticfinalStringTAG=FloatingTextViewServiceActivity.class.getSimpleName();privateActivityResultLauncher<Intent>overlayPermissionLauncher;@OverrideprotectedvoidonCreate(BundlesavedInstanceState){super.onCreate(savedInstanceState);EdgeToEdge.enable(this);setContentView(R.layout.activity_floating_text_view_service);ViewCompat.setOnApplyWindowInsetsListener(findViewById(R.id.main),(v,insets)->{InsetssystemBars=insets.getInsets(WindowInsetsCompat.Type.systemBars());v.setPadding(systemBars.left,systemBars.top,systemBars.right,systemBars.bottom);returninsets;});test();}privatevoidtest(){overlayPermissionLauncher=registerForActivityResult(newActivityResultContracts.StartActivityForResult(),result->{if(checkOverlayPermission()){createFloatingTextView();}else{Toast.makeText(this,"请先开启浮窗权限",Toast.LENGTH_SHORT).show();}});if(checkOverlayPermission()){createFloatingTextView();}else{requestOverlayPermission();}ButtonbtnTest=findViewById(R.id.btn_test);btnTest.setOnClickListener(v->{Log.i(TAG,"btnTest click");});}privatebooleancheckOverlayPermission(){if(Build.VERSION.SDK_INT>=Build.VERSION_CODES.M){if(Settings.canDrawOverlays(this)){returntrue;}else{returnfalse;}}returntrue;}privatevoidrequestOverlayPermission(){Intentintent=newIntent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION,Uri.parse("package:"+getPackageName()));overlayPermissionLauncher.launch(intent);}privatevoidcreateFloatingTextView(){Intentintent=newIntent(this,FloatingTextViewService.class);startService(intent);}}

5、Test

• 页面中的按钮，因为悬浮常驻文本的遮挡，所以很难点击到

二、悬浮常驻文本遮挡处理策略

1. 设置FLAG_NOT_FOCUSABLE | FLAG_NOT_TOUCHABLE标志，这是创建不可交互悬浮窗的关键，即窗口无法获得焦点，也无法接受触摸事件

WindowManager.LayoutParamsparams=newWindowManager.LayoutParams(WindowManager.LayoutParams.WRAP_CONTENT,WindowManager.LayoutParams.WRAP_CONTENT,Build.VERSION.SDK_INT>=Build.VERSION_CODES.O?WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY:WindowManager.LayoutParams.TYPE_PHONE,WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE|WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE,// 使触摸事件穿透PixelFormat.TRANSLUCENT);

2. 或者，单独设置FLAG_NOT_FOCUSABLE标志

WindowManager.LayoutParamsparams=newWindowManager.LayoutParams(WindowManager.LayoutParams.WRAP_CONTENT,WindowManager.LayoutParams.WRAP_CONTENT,Build.VERSION.SDK_INT>=Build.VERSION_CODES.O?WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY:WindowManager.LayoutParams.TYPE_PHONE,WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE,// 使触摸事件穿透PixelFormat.TRANSLUCENT);

三、FLAG_NOT_FOCUSABLE的效果体现

1、Service

• FloatingEditTextService.java

publicclassFloatingEditTextServiceextendsService{privateLinearLayoutllFloating;privateWindowManagerwindowManager;@Nullable@OverridepublicIBinderonBind(Intentintent){returnnull;}@OverridepublicvoidonCreate(){super.onCreate();windowManager=(WindowManager)getSystemService(WINDOW_SERVICE);// 创建布局参数WindowManager.LayoutParamsparams=newWindowManager.LayoutParams(WindowManager.LayoutParams.WRAP_CONTENT,WindowManager.LayoutParams.WRAP_CONTENT,Build.VERSION.SDK_INT>=Build.VERSION_CODES.O?WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY:WindowManager.LayoutParams.TYPE_PHONE,WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE,PixelFormat.TRANSLUCENT);// 设置位置为左下角params.gravity=Gravity.BOTTOM|Gravity.START;params.x=0;params.y=0;LayoutInflaterinflater=LayoutInflater.from(this);llFloating=(LinearLayout)inflater.inflate(R.layout.floating_edit_text,null);// 添加到窗口windowManager.addView(llFloating,params);}@OverridepublicvoidonDestroy(){super.onDestroy();if(llFloating!=null){windowManager.removeView(llFloating);}}}

• floating_edit_text.xml

<LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="wrap_content"android:layout_height="wrap_content"android:background="#22FF0000"android:orientation="vertical"android:padding="20dp"><EditTextandroid:id="@+id/et_test"android:layout_width="200dp"android:layout_height="wrap_content"/></LinearLayout>

2、Manifest

• AndroidManifest.xml

<uses-permissionandroid:name="android.permission.SYSTEM_ALERT_WINDOW"/><application>...<serviceandroid:name=".service.FloatingEditTextService"android:enabled="true"android:exported="false"/></application>

3、Activity Layout

• activity_floating_edit_text_service.xml

<?xml version="1.0" encoding="utf-8"?><androidx.constraintlayout.widget.ConstraintLayoutxmlns:android="http://schemas.android.com/apk/res/android"xmlns:app="http://schemas.android.com/apk/res-auto"xmlns:tools="http://schemas.android.com/tools"android:id="@+id/main"android:layout_width="match_parent"android:layout_height="match_parent"tools:context=".FloatingEditTextServiceActivity"></androidx.constraintlayout.widget.ConstraintLayout>

4、Activity Code

• FloatingEditTextServiceActivity.java

publicclassFloatingEditTextServiceActivityextendsAppCompatActivity{privateActivityResultLauncher<Intent>overlayPermissionLauncher;@OverrideprotectedvoidonCreate(BundlesavedInstanceState){super.onCreate(savedInstanceState);EdgeToEdge.enable(this);setContentView(R.layout.activity_floating_edit_text_service);ViewCompat.setOnApplyWindowInsetsListener(findViewById(R.id.main),(v,insets)->{InsetssystemBars=insets.getInsets(WindowInsetsCompat.Type.systemBars());v.setPadding(systemBars.left,systemBars.top,systemBars.right,systemBars.bottom);returninsets;});test();}privatevoidtest(){overlayPermissionLauncher=registerForActivityResult(newActivityResultContracts.StartActivityForResult(),result->{if(checkOverlayPermission()){createFloatingTextView();}else{Toast.makeText(this,"请先开启浮窗权限",Toast.LENGTH_SHORT).show();}});if(checkOverlayPermission()){createFloatingTextView();}else{requestOverlayPermission();}}privatebooleancheckOverlayPermission(){if(Build.VERSION.SDK_INT>=Build.VERSION_CODES.M){if(Settings.canDrawOverlays(this)){returntrue;}else{returnfalse;}}returntrue;}privatevoidrequestOverlayPermission(){Intentintent=newIntent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION,Uri.parse("package:"+getPackageName()));overlayPermissionLauncher.launch(intent);}privatevoidcreateFloatingTextView(){Intentintent=newIntent(this,FloatingEditTextService.class);startService(intent);}}

5、Test

1. 设置FLAG_NOT_FOCUSABLE标志，无法使用 EditText 输入内容

2. 设置参数为 0，即可使用 EditText 输入内容

• 注：设置FLAG_NOT_FOCUSABLE、FLAG_NOT_TOUCHABLE、FLAG_NOT_FOCUSABLE | FLAG_NOT_TOUCHABLE标志，都无法使用 EditText 输入内容