Android实现蒙版引导功能

package com.kx.myguide; import android.content.Context; import android.graphics.PixelFormat; import android.os.Bundle; import android.support.v7.app.AppCompatActivity; import android.util.DisplayMetrics; import android.view.Gravity; import android.view.LayoutInflater; import android.view.View; import android.view.WindowManager; import android.widget.Button; import android.widget.ImageView; import android.widget.RelativeLayout; /** * author: kx * time: 2018/9/3 */ public class MainActivity extends AppCompatActivity implements View.OnClickListener { private Button mBt; private WindowManager mWindowManager; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); mBt = (Button) findViewById(R.id.bt); mBt.setOnClickListener(this); mWindowManager = getWindowManager(); } int i = 0; @Override public void onClick(View v) { runOnUiThread(new Runnable() { @Override public void run() { LayoutInflater layoutInflater = getLayoutInflater(); final View guideView = layoutInflater.inflate(R.layout.guide, null); final ImageView img = guideView.findViewById(R.id.img); RelativeLayout swtich = guideView.findViewById(R.id.swtich); swtich.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { switch (i) { case 0: img.setBackgroundResource(R.drawable.guidepage2); i++; break; case 1: img.setBackgroundResource(R.drawable.guidepage3); i++; break; case 2: img.setBackgroundResource(R.drawable.guidepage4); i++; break; case 3: i = 0; mWindowManager.removeView(guideView); break; } } }); //设置参数 WindowManager.LayoutParams params = new WindowManager.LayoutParams(); params.type = WindowManager.LayoutParams.TYPE_APPLICATION; params.format = PixelFormat.RGBA_8888; params.gravity = Gravity.LEFT | Gravity.TOP; WindowManager wm = (WindowManager) getSystemService(Context.WINDOW_SERVICE); DisplayMetrics dm = new DisplayMetrics(); wm.getDefaultDisplay().getMetrics(dm); params.width = dm.widthPixels; // 屏幕宽度（像素） params.height = dm.heightPixels; // 屏幕高度（像素） mWindowManager.addView(guideView, params); } }); } }