单击时使ImageView全屏显示

<ImageView
    android:id="@+id/imageView"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:src="@drawable/image" />

ImageView imageView = findViewById(R.id.imageView);
imageView.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        // 在此处实现全屏显示的逻辑
    }
});

// 隐藏系统状态栏和导航栏
View decorView = getWindow().getDecorView();
int uiOptions = View.SYSTEM_UI_FLAG_FULLSCREEN | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION;
decorView.setSystemUiVisibility(uiOptions);

// 设置Activity为全屏模式
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);

// 设置ImageView的布局参数，使其填充整个屏幕
imageView.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.MATCH_PARENT));